View TEA1733T10_4854129.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

TEA1733T; TEA1733LT
GreenChip III SMPS control IC
Rev. 02 -- 26 March 2010 Product data sheet
1. General description
The TEA1733T and TEA1733LT are low cost Switched Mode Power Supply (SMPS) controller ICs intended for flyback topologies. The TEA1733(L) operates in fixed frequency mode. To reduce ElectroMagnetic Interference (EMI), frequency jitter has been implemented. Slope compensation is integrated for Continuous Conduction Mode (CCM) operation. The TEA1733(L) IC incorporates OverPower Protection (OPP). This enables the controller to operate under overpower situations for a limited amount of time. Two pins, VINSENSE and PROTECT, are reserved for protection purposes. Input UnderVoltage Protection (UVP) and OverVoltage Protection (OVP), output OVP and OverTemperature Protection (OTP) can be implemented using a minimal number of external components. At low power levels, the primary peak current is set to 25 % of the maximum peak current and the switching frequency is reduced to limit switching losses. The combination of fixed frequency operation at high output power and frequency reduction at low output power provides high-efficiency over the total load range. The TEA1733(L) enables low cost, highly efficient and reliable supplies for power requirements up to 75 W to be designed easily and with a minimum number of external components.
2. Features and benefits
2.1 Features
SMPS controller IC enabling low-cost applications Large input voltage range (12 V to 30 V) Very low supply current during start-up and restart (typically 10 A) Low supply current during normal operation (typically 0.5 mA without load) Overpower or high/low line compensation Adjustable overpower time-out Adjustable overpower restart timer Fixed switching frequency with frequency jitter to reduce EMI Frequency reduction with fixed minimum peak current to maintain high-efficiency at low output power levels Slope compensation for CCM operation Low and adjustable OverCurrent Protection (OCP) trip level Adjustable soft start operation
NXP Semiconductors
TEA1733T; TEA1733LT
GreenChip III SMPS control IC
Two protection inputs (e.g. for input UVP and OVP, OTP and output OVP) IC overtemperature protection
3. Applications
All applications requiring efficient and cost-effective power supply solutions to 75 W.
4. Ordering information
Table 1. Ordering information Package Name TEA1733T TEA1733LT SO8 SO8 Description plastic small outline package; 8 leads; body width 3.9 mm plastic small outline package; 8 leads; body width 3.9 mm Version SOT96-1 SOT96-1 Type number
TEA1733T_TEA1733LT_2
All information provided in this document is subject to legal disclaimers.
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 -- 26 March 2010
2 of 20
NXP Semiconductors
TEA1733T; TEA1733LT
GreenChip III SMPS control IC
5. Block diagram
VCCstart VCC 1
22 V 6V
Vctrl(Ipeak) 400 mV
21 V 12 V VCCstop
D
Q overpower 2.5 V
11 A
8
OPTIMER
driver OPP switch TEMPERATURE PROTECTION OTP 5.4 V
clamp GND 2
latch
5V
latch reset
restart clamp RESTART CONTROL power down OPP switch
107 A
max
set
OSCILLATOR
MODULATION
7 k
frequency reduction ANALOG CONTROL SLOPE COMPENSATION
OPTIMER 1.2 V / 4.5 V
7
Vctrl(Ipeak)
CTRL
DRIVER
3
DRV Q
S R
set stop max restart BLANK
restart S Q R
55 A
soft start soft start LEB stop latch OVERPOWER CORRECTION VINSENSE latch S Vctrl(Ipeak) OCP Q R latch reset
VCCstop overpower(1) highvin lowvin VCCstart power down lowvin protlow OTP prothigh protlow overpower(1)
prothigh 0.50 V/0.80 V protlow
32 A
6
107 A
PROTECT
highvin 3.52 V
ISENSE
4
lowvin
0.72 V/0.94 V
5
VINSENSE
DIGITAL CONTROL
014aaa926
(1) In the TEA1733LT the Overpower signal switches the IC to the latched-off state. In the TEA1733T the Overpower signal triggers the restart timer.
Fig 1.
Block diagram
TEA1733T_TEA1733LT_2
All information provided in this document is subject to legal disclaimers.
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 -- 26 March 2010
3 of 20
NXP Semiconductors
TEA1733T; TEA1733LT
GreenChip III SMPS control IC
6. Pinning information
6.1 Pinning
VCC GND DRIVER ISENSE
1 2
8 7
OPTIMER CTRL PROTECT VINSENSE
TEA1733T
3 4
014aaa927
6 5
Fig 2.
Pin configuration: TEA1733(L) (SOT96-1)
6.2 Pin description
Table 2. Symbol VCC GND DRIVER ISENSE VINSENSE PROTECT CTRL OPTIMER Pin description Pin 1 2 3 4 5 6 7 8 Description supply voltage ground gate driver output current sense input input voltage protection input general purpose protection input control input overpower and restart timer
TEA1733T_TEA1733LT_2
All information provided in this document is subject to legal disclaimers.
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 -- 26 March 2010
4 of 20
NXP Semiconductors
TEA1733T; TEA1733LT
GreenChip III SMPS control IC
7. Functional description
7.1 General control
The TEA1733(L) contains a flyback circuit controller, a typical configuration of which is shown in Figure 3.
C1 R1
C2
TEA1733T
R2
VINSENSE PROTECT
5 6 7 8
R8
4 3 2 1
ISENSE DRIVER GND VCC
R5 R10 R6 S1
R3
Z1
R4
CTRL OPTIMER
C3 C4
C5
C6 R9
R7
014aaa928
Fig 3.
Typical configuration
7.2 Start-up and UnderVoltage LockOut (UVLO)
Initially, the capacitor on the VCC pin is charged from the high voltage mains via resistor R3. If VCC is lower than Vstartup, the IC current consumption is low (typically 10 A). When VCC reaches Vstartup, the IC first waits for the VINSENSE pin to reach the Vstart(VINSENSE) voltage and PROTECT pin to reach the Vdet(PROTECT)(L) voltage. When both levels are reached, the IC charges the ISENSE pin to the Vstart(soft) level and starts switching. In a typical application the supply voltage is taken over by the auxiliary winding of the transformer. If a protection is triggered the controller stops switching. Depending on the protection triggered and IC version (TEA1733T or TEA1733LT), the protection causes a restart or latches the converter to an off-state. A restart caused by a protection rapidly charges the OPTIMER pin to 4.5 V (typical). The TEA1733(L) enters Power-down mode until the OPTIMER pin discharges down to 1.2 V (typical). In Power-down mode, the IC consumes a very low supply current (10 A typical) and the VCC pin is clamped at 22 V (typical) by an internal clamp circuit. When the voltage on pin OPTIMER drops below 1.2 V (typical) and the VCC pin voltage is above the VCC start-up voltage (See Figure 4), the IC restarts. When a latched protection is triggered, the TEA1733(L) immediately enters Power-down mode. The VCC pin is clamped to a voltage just above the latch protection reset voltage (Vrst(latch) + 1 V).
TEA1733T_TEA1733LT_2 All information provided in this document is subject to legal disclaimers. (c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 -- 26 March 2010
5 of 20
NXP Semiconductors
TEA1733T; TEA1733LT
GreenChip III SMPS control IC
Vstartup Vth(UVLO) VCC soft start ISENSE Vdet(H)(VINSENSE) VINSENSE Vdet(H)(PROTECT) PROTECT Vdet(L)(PROTECT) 4.5 V 1.2 V OPTIMER soft start
VO charging VCC capacitor starting converter normal operation
(power down) protection restart
014aaa929
Fig 4.
Start-up sequence, normal operation and restart sequence
When the voltage on pin VCC drops below the UVLO level during normal operation, the controller stops switching and enters Restart mode. In Restart mode, the driver output is disabled and the VCC pin voltage is recharged via resistor R3 to the rectified mains.
7.3 Supply management
All internal reference voltages are derived from a temperature compensated on-chip band gap circuit. Internal reference currents are derived from a trimmed and temperature compensated current reference circuit.
7.4 Input voltage detection (VINSENSE pin)
In a typical application, the mains input voltage can be detected by the VINSENSE pin. Switching will not take place until the voltage on VINSENSE has reached the Vstart(VINSENSE) voltage (typically 0.94 V). When the VINSENSE voltage drops below Vdet(L)(VINSENSE) (typically 0.72 V) or exceeds Vdet(H)(VINSENSE) (typically 3.52 V), the converter stops switching and performs a restart. If pin VINSENSE is left open or disconnected, the pin is pulled up by the internal 20 nA (typical) current source to reach the Vdet(H)(VINSENSE) level. This triggers restart protection. An internal clamp of 5.2 V (typical) protects this pin from excessive voltages.
7.5 Protection input (PROTECT PIN)
Pin PROTECT is a general purpose input pin, which can be used to switch off the converter (latched protection). The converter is stopped when the voltage on this pin is pulled above Vdet(H)(PROTECT) (typically 0.8 V) or below Vdet(L)(PROTECT) (typically 0.5 V). A current of 32 A (typical) flows out of the chip when the pin voltage is at the Vdet(L)(PROTECT) level. A current of 107 A (typical) flows into the chip when the pin voltage is at the Vdet(H)(PROTECT) level.
TEA1733T_TEA1733LT_2 All information provided in this document is subject to legal disclaimers. (c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 -- 26 March 2010
6 of 20
NXP Semiconductors
TEA1733T; TEA1733LT
GreenChip III SMPS control IC
The PROTECT input can be used to create overvoltage detection and OTP functions. A small 10 nF capacitor can be connected to the pin if the protections on this pin are not used. An internal clamp of 4.1 V (typical) protects this pin from excessive voltages.
7.6 Duty cycle control (CTRL pin)
The output power of the converter is regulated by the CTRL pin. This pin is connected to an internal 5.4 V supply using an internal 7 k resistor. The CTRL pin voltage sets the peak current which is measured using the ISENSE pin (see Section 7.10). At a low output power, the switching frequency is also reduced (see Section 7.12). The maximum duty cycle is limited to 72 %.
7.7 Slope compensation (CTRL pin)
A slope compensation circuit is integrated in the IC or CCM. Slope compensation guarantees stable operation for duty cycles greater than 50 %.
7.8 Overpower timer (OPTIMER pin)
If the OPTIMER pin is connected to capacitor C4 (see Figure 3), a temporary overload situation is allowed. Vctrl(Ipeak) (see Figure 1) is set by the CTRL. When Vctrl(Ipeak) is above 400 mV, the IIO(OPTIMER) current (11 A typical) is sourced from the OPTIMER pin. If the voltage on the OPTIMER pin reaches the Vprot(OPTIMER) voltage (2.5 V typical) the OverPower Protection (OPP) is triggered (see Figure 5).
IO
VO
400 mV VISENSE
Vprot(OPTIMER) VOPTIMER high load normal load high load protection
014aaa930
Fig 5.
Overpower delay (TEA1733T)
* TEA1733T: when the Vprot(OPTIMER) voltage is reached the device restarted * TEA1733LT: when the Vprot(OPTIMER) voltage is reached, it is latched in the off state
TEA1733T_TEA1733LT_2
All information provided in this document is subject to legal disclaimers.
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 -- 26 March 2010
7 of 20
NXP Semiconductors
TEA1733T; TEA1733LT
GreenChip III SMPS control IC
IO
VO
400 mV VISENSE
Vprot(OPTIMER) VOPTIMER high load normal load high load protection
014aaa968
Fig 6.
Overpower delay: latched (TEA1733LT)
7.9 Current mode control (ISENSE pin)
Current mode control is used for its good line regulation. The primary current is sensed by the ISENSE pin across an external resistor R9 (see Figure 3) and compared with an internal reference voltage. The internal reference voltage is proportional to the CTRL pin voltage (see Figure 7).
0.6 Vsense(max) (V) 0.4
014aaa931
0.2
frequency reduction
0 0 1 2 3 VCTRL (V) 4
Fig 7.
Peak current control using pin ISENSE
Leading edge blanking prevents false triggering due to capacitive discharge when switching on the external power switch (see Figure 8).
TEA1733T_TEA1733LT_2
All information provided in this document is subject to legal disclaimers.
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 -- 26 March 2010
8 of 20
NXP Semiconductors
TEA1733T; TEA1733LT
GreenChip III SMPS control IC
tleb Vsense(max)
VISENSE
t
014aaa932
Fig 8.
Leading edge blanking
7.10 Overpower or high/low line compensation (VINSENSE and ISENSE pins)
The overpower compensation function can be used to realize a maximum output power which is nearly constant over the full input mains. The overpower compensation circuit measures the input voltage on the VINSENSE pin and outputs a proportionally dependent current on the ISENSE pin. The DC voltage across the soft start resistor limits the maximum peak current on the current sense resistor. At low output power levels, the overpower compensation circuit is switched off (See Figure 9).
2 1.7 IISENSE (A)
0.68
1
2
3 VVINSENSE (V)
4
014aaa933
Fig 9.
Overpower compensation using pins VINSENSE and ISENSE
7.11 Soft start-up (ISENSE pin)
A soft start is made to prevent audible noise during start-up or a restart condition. Before the converter starts, the soft start capacitor C6 (see Figure 3) on the ISENSE pin is charged. When the converter starts switching, the primary peak current slowly increases as the soft start capacitor discharges through the soft start resistor (R6, see Figure 3). The soft start time constant is set by the soft start capacitor value chosen. The soft start resistor value must also be taken into account, but this value is typically defined by the overpower compensation (see Section 7.10).
TEA1733T_TEA1733LT_2
All information provided in this document is subject to legal disclaimers.
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 -- 26 March 2010
9 of 20
NXP Semiconductors
TEA1733T; TEA1733LT
GreenChip III SMPS control IC
7.12 Low power operation
In low power operation switching losses are reduced by lowering the switching frequency. The converter switching frequency is reduced and the peak current is set to 25 % of the maximum peak current (see Figure 7 and Figure 10).
fsw (kHz) switching frequency
1
2 VCTRL (V)
014aaa934
Fig 10. Frequency control
7.13 Driver (pin DRIVER)
The driver circuit to the gate of the power MOSFET has a current sourcing capability of typically -250 mA and a current sink capability of typically 750 mA. This allows for a fast turn-on and turn-off of the power MOSFET for efficient operation.
7.14 OverTemperature Protection (OTP)
Integrated overtemperature protection ensures the IC stops switching if the junction temperature exceeds the thermal temperature shutdown limit. OTP is a latched protection and it can be reset by removing the voltage on pin VCC.
8. Limiting values
Table 3. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol Voltages VCC VVINSENSE VPROTECT VCTRL VIO(OPTIMER) VISENSE Currents II(VINSENSE) II(PROTECT)
TEA1733T_TEA1733LT_2
Parameter supply voltage voltage on pin VINSENSE voltage on pin PROTECT voltage on pin CTRL input/output voltage on pin OPTIMER voltage on pin ISENSE input current on pin VINSENSE input current on pin PROTECT
Conditions continuous t < 100 ms current limited current limited
Min -0.4 -0.4 -0.4 -0.4 -0.4
Max +30 35 +5.5 +5 +5 +5 +5 +1 +1
Unit V V V V V V V mA mA
current limited
-0.4 -1 -1
All information provided in this document is subject to legal disclaimers.
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 -- 26 March 2010
10 of 20
NXP Semiconductors
TEA1733T; TEA1733LT
GreenChip III SMPS control IC
Table 3. Limiting values ...continued In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol ICTRL IISENSE IDRIVER General Ptot Tstg Tj ESD VESD electrostatic discharge voltage class 1 human body model machine model charged device model
[1] [2] Equivalent to discharging a 100 pF capacitor through a 1.5 k series resistor. Equivalent to discharging a 200 pF capacitor through a 0.75 H coil and a 10 resistor.
[1] [2]
Parameter current on pin CTRL current on pin ISENSE current on pin DRIVER total power dissipation storage temperature junction temperature
Conditions
Min -3 -10
Max 0 +1 +1 0.5 +150 +150
Unit mA mA A W C C
< 10 % Tamb < 75 C
-0.4 -55 -40
-
4000 300 750
V V V
9. Thermal characteristics
Table 4. Symbol Rth(j-a) Rth(j-c) Thermal characteristics Parameter thermal resistance from junction to ambient thermal resistance from junction to case Conditions in free air; JEDEC test board in free air; JEDEC test board Typ 150 79 Unit K/W K/W
TEA1733T_TEA1733LT_2
All information provided in this document is subject to legal disclaimers.
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 -- 26 March 2010
11 of 20
NXP Semiconductors
TEA1733T; TEA1733LT
GreenChip III SMPS control IC
10. Characteristics
Table 5. Characteristics Tamb = 25 C; VCC = 20 V; all voltages are measured with respect to ground (pin 2); currents are positive when flowing into the IC; unless otherwise specified. Symbol Vstartup Vth(UVLO) Vclamp(VCC) Parameter start-up voltage undervoltage lockout threshold voltage clamp voltage on pin VCC hysteresis voltage start-up supply current latched reset voltage start voltage on pin VINSENSE LOW-level detection voltage on pin VINSENSE HIGH-level detection voltage on pin VINSENSE output current on pin VINSENSE clamp voltage on pin VINSENSE LOW-level detection voltage on pin PROTECT HIGH-level detection voltage on pin PROTECT output current on pin PROTECT clamp voltage on pin PROTECT voltage on pin CTRL VVINSENSE = Vlow(PROTECT) VVINSENSE = Vhigh(PROTECT) II(PROTECT) = 200 A
[1]
Conditions
Min 18.6 11.2
Typ 20.6 12.2 Vstartup + 1
Max 22.6 13.2 -
Unit V V V V V A mA V V V
Supply voltage management (pin VCC)
activated during restart activated during latched protection Vstartup - Vth(UVLO) VCC < Vstartup
8 5 0.4 4
Vrst(latch) + 1 9 10 0.5 5 0.94 0.72 10 15 0.6 6 0.99 0.76
Vhys ICC(startup) ICC(oper) Vrst(latch) Vstart(VINSENSE) Vdet(L)(VINSENSE)
operating supply current no load on pin DRIVER
Input voltage sensing (pin VINSENSE) detection level 0.89 0.68
Vdet(H)(VINSENSE)
3.39
3.52
3.65
V
IO(VINSENSE) Vclamp(VINSENSE)
II(VINSENSE) = 50 A -
-20 5.2
-
nA V
Protection input (pin PROTECT) Vdet(L)(PROTECT) 0.47 0.50 0.53 V
Vdet(H)(PROTECT)
0.75
0.8
0.85
V
IO(PROTECT) Vclamp(PROTECT)
-34 87 3.5
-32 107 4.1
-30 127 4.7
A A V
Peak current control (pin CTRL) VCTRL for minimum flyback peak current for maximum flyback peak current Rint(CTRL) internal resistance on pin CTRL 1.5 3.4 5 1.8 3.9 7 2.1 4.3 9 V V k
TEA1733T_TEA1733LT_2
All information provided in this document is subject to legal disclaimers.
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 -- 26 March 2010
12 of 20
NXP Semiconductors
TEA1733T; TEA1733LT
GreenChip III SMPS control IC
Table 5. Characteristics ...continued Tamb = 25 C; VCC = 20 V; all voltages are measured with respect to ground (pin 2); currents are positive when flowing into the IC; unless otherwise specified. Symbol IO(CTRL) Parameter output current on pin CTRL Conditions VCTRL = 1.4 V VCTRL = 3.7 V Min -0.7 -0.28 62 210 3 68.5 1.5 1.25 2.4 100 -12.2 0.8 4.1 -127 -0.1 Typ -0.5 -0.2 66.5 280 4 72 1.8 1.55 2.5 150 -10.7 1.2 4.5 -107 0 Max -0.3 -0.12 71 350 5 79 2.1 1.85 2.6 200 -9.2 1.6 4.9 -87 0.1 Unit mA mA kHz Hz kHz % V V V A A V V A A
Pulse width modulator fosc fmod fmod max Vstart(red)f V(zero) Vprot(OPTIMER) Iprot(OPTIMER) oscillator frequency modulation frequency modulation frequency variation maximum duty cycle frequency reduction start pin CTRL voltage zero duty cycle voltage protection voltage on pin OPTIMER protection current on pin no overpower situation OPTIMER overpower situation restart voltage on pin OPTIMER restart current on pin OPTIMER low level high level charging OPTIMER capacitor discharging OPTIMER capacitor Current sense (pin ISENSE) Vsense(max) maximum sense voltage V/t = 50 mV/s; VVINSENSE = 0.78 V V/t = 200 mV/s; VVINSENSE = 0.78 V Vth(sense)opp VISENSE/t tleb overpower protection sense threshold voltage slope compensation voltage on pin ISENSE leading edge blanking time overpower VVINSENSE = 1 V; compensation current on Vsense(max) > 400 mV pin ISENSE VVINSENSE=3 V; Vsense(max) > 400 mV soft start current soft start voltage VCTRL = 4 V; enable voltage V/t = 50 mV/s 0.48 0.50 370 17 250 0.51 0.53 400 25 300 0.54 0.56 430 33 350 V V mV mV/s ns pin CTRL
Overpower protection (pin OPTIMER)
Restart timer (pin OPTIMER) Vrestart(OPTIMER) Irestart(OPTIMER)
Overpower compensation (pin VINSENSE and pin ISENSE) Iopc(ISENSE) 0.28 1.7 A A
Soft start (pin ISENSE) Istart(soft) Vstart(soft) -63 -55 Vsense(max) -47 A V
TEA1733T_TEA1733LT_2
All information provided in this document is subject to legal disclaimers.
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 -- 26 March 2010
13 of 20
NXP Semiconductors
TEA1733T; TEA1733LT
GreenChip III SMPS control IC
Table 5. Characteristics ...continued Tamb = 25 C; VCC = 20 V; all voltages are measured with respect to ground (pin 2); currents are positive when flowing into the IC; unless otherwise specified. Symbol Rstart(soft) Isource(DRIVER) Isink(DRIVER) VO(DRIVER)max Parameter soft start resistance source current on pin DRIVER sink current on pin DRIVER maximum output voltage on pin DRIVER IC protection level temperature VDRIVER = 2 V VDRIVER = 2 V VDRIVER = 10 V Conditions Min 12 0.25 0.6 9 Typ -0.3 0.3 0.75 10.5 Max -0.25 12 Unit k A A A V
Driver (pin DRIVER)
Temperature protection Tpl(IC) 130 140 150 C
[1]
The clamp voltage on the PROTECT pin is lowered when the IC is in power-down (latched or restart protection).
11. Application information
A power supply with the TEA1733(L) is a flyback converter operating in Continuous conduction mode (See Figure 11). Capacitor C5 buffers the IC supply voltage, which is powered via resistor R3 at start-up and via the auxiliary winding during normal operation. Sense resistor R9 converts the current through the MOSFET S1 into a voltage on pin ISENSE. The value of R9 defines the maximum primary peak current on MOSFET S1. Resistor R7 reduces the peak current to capacitor C5. In the example shown in Figure 11, the PROTECT pin is used for OVP and OTP. The OVP level is set by diode Z1 to VCC = 25.8 V. The OTP level is set by Negative Temperature Coefficient (NTC) resistor R4. The VINSENSE pin is used for mains voltage detection and resistors R1 and R2 set the start voltage to about 80 V (AC). The overpower protection time is defined by capacitor C4 is set at 60 ms. The restart time is defined by capacitor C4 and resistor R8 at 0.5 s. Resistor R6 and capacitor C6 define the soft start time. Resistor R5 prevents the soft start capacitor C6 from being charged during normal operation caused by negative voltage spikes across the current sense resistor R9. Capacitor C3 reduces noise on the CTRL pin.
TEA1733T_TEA1733LT_2
All information provided in this document is subject to legal disclaimers.
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 -- 26 March 2010
14 of 20
NXP Semiconductors
TEA1733T; TEA1733LT
GreenChip III SMPS control IC
C1 68 F C2 100 nF R2 82 k
R1 10 M
TEA1733T
VINSENSE PROTECT 5 6 7 8
R8 2.2 M
4 3 2 1
ISENSE DRIVER GND VCC
C5 4.7 F
R5 470 S1 R10 10 R6 22 k C6 220 nF R9 0.25 R7 10 014aaa935
R3 1 M
200 k
Z1 25 V
R4
CTRL OPTIMER
C3 1 nF C4 220 nF
Fig 11. Typical application
TEA1733T_TEA1733LT_2
All information provided in this document is subject to legal disclaimers.
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 -- 26 March 2010
15 of 20
NXP Semiconductors
TEA1733T; TEA1733LT
GreenChip III SMPS control IC
12. Package outline
SO8: plastic small outline package; 8 leads; body width 3.9 mm SOT96-1
D
E
A X
c
y
HE
vMA
Z
8 5
Q A2
pin 1 index
A1
(A 3) Lp L
A
1
4
e
bp
wM
detail X
0
2.5 scale
5 mm
DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT mm inches Notes 1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. 2. Plastic or metal protrusions of 0.25 mm (0.01 inch) maximum per side are not included. OUTLINE VERSION SOT96-1 REFERENCES IEC
076E03
A max. 1.75
0.069
A1 0.25 0.10
A2 1.45 1.25
A3 0.25
0.01
bp 0.49 0.36
c 0.25 0.19
D (1) 5.0 4.8
0.20 0.19
E (2) 4.0 3.8
0.16 0.15
e 1.27
0.05
HE 6.2 5.8
L 1.05
Lp 1.0 0.4
Q 0.7 0.6
v 0.25
0.01
w 0.25
0.01
y 0.1
0.004
Z (1) 0.7 0.3
0.028 0.012
o
0.010 0.057 0.004 0.049
0.019 0.0100 0.014 0.0075
0.244 0.039 0.028 0.041 0.228 0.016 0.024
8 o 0
JEDEC
MS-012
JEITA
EUROPEAN PROJECTION
ISSUE DATE 99-12-27 03-02-18
Fig 12. Package outline SOT96-1 (SO8)
TEA1733T_TEA1733LT_2 All information provided in this document is subject to legal disclaimers. (c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 -- 26 March 2010
16 of 20
NXP Semiconductors
TEA1733T; TEA1733LT
GreenChip III SMPS control IC
13. Revision history
Table 6. Revision history Release date 20100326 Data sheet status Product data sheet Change notice Supersedes TEA1733T_TEA1733LT_1 Document ID TEA1733T_TEA1733LT_2 Modifications:
* * * * * * *
Typical value of Vstart(VINSENSE) changed in Section 7.4 "Input voltage detection (VINSENSE pin)". Value of internal voltage source changed in Section 7.6 "Duty cycle control (CTRL pin)". Value of IIO(OPTIMER) changed in Section 7.8 "Overpower timer (OPTIMER pin)". Figure 6 "Overpower delay: latched (TEA1733LT)" added. Pin number changed in Table 5 "Characteristics". Figure 11 "Typical application" changed. Package information in figure title of Figure 12 "Package outline SOT96-1 (SO8)" changed. Objective data sheet -
TEA1733T_TEA1733LT_1
20091026
TEA1733T_TEA1733LT_2
All information provided in this document is subject to legal disclaimers.
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 -- 26 March 2010
17 of 20
NXP Semiconductors
TEA1733T; TEA1733LT
GreenChip III SMPS control IC
14. Legal information
14.1 Data sheet status
Document status[1][2] Objective [short] data sheet Preliminary [short] data sheet Product [short] data sheet
[1] [2] [3]
Product status[3] Development Qualification Production
Definition This document contains data from the objective specification for product development. This document contains data from the preliminary specification. This document contains the product specification.
Please consult the most recently issued document before initiating or completing a design. The term `short data sheet' is explained in section "Definitions". The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status information is available on the Internet at URL http://www.nxp.com.
14.2 Definitions
Draft -- The document is a draft version only. The content is still under internal review and subject to formal approval, which may result in modifications or additions. NXP Semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information. Short data sheet -- A short data sheet is an extract from a full data sheet with the same product type number(s) and title. A short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. For detailed and full information see the relevant full data sheet, which is available on request via the local NXP Semiconductors sales office. In case of any inconsistency or conflict with the short data sheet, the full data sheet shall prevail. Product specification -- The information and data provided in a Product data sheet shall define the specification of the product as agreed between NXP Semiconductors and its customer, unless NXP Semiconductors and customer have explicitly agreed otherwise in writing. In no event however, shall an agreement be valid in which the NXP Semiconductors product is deemed to offer functions and qualities beyond those described in the Product data sheet.
malfunction of an NXP Semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental damage. NXP Semiconductors accepts no liability for inclusion and/or use of NXP Semiconductors products in such equipment or applications and therefore such inclusion and/or use is at the customer's own risk. Applications -- Applications that are described herein for any of these products are for illustrative purposes only. NXP Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. NXP Semiconductors does not accept any liability related to any default, damage, costs or problem which is based on a weakness or default in the customer application/use or the application/use of customer's third party customer(s) (hereinafter both referred to as "Application"). It is customer's sole responsibility to check whether the NXP Semiconductors product is suitable and fit for the Application planned. Customer has to do all necessary testing for the Application in order to avoid a default of the Application and the product. NXP Semiconductors does not accept any liability in this respect. Limiting values -- Stress above one or more limiting values (as defined in the Absolute Maximum Ratings System of IEC 60134) will cause permanent damage to the device. Limiting values are stress ratings only and (proper) operation of the device at these or any other conditions above those given in the Recommended operating conditions section (if present) or the Characteristics sections of this document is not warranted. Constant or repeated exposure to limiting values will permanently and irreversibly affect the quality and reliability of the device. Terms and conditions of commercial sale -- NXP Semiconductors products are sold subject to the general terms and conditions of commercial sale, as published at http://www.nxp.com/profile/terms, unless otherwise agreed in a valid written individual agreement. In case an individual agreement is concluded only the terms and conditions of the respective agreement shall apply. NXP Semiconductors hereby expressly objects to applying the customer's general terms and conditions with regard to the purchase of NXP Semiconductors products by customer. No offer to sell or license -- Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights. Export control -- This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from national authorities. Non-automotive qualified products -- Unless this data sheet expressly states that this specific NXP Semiconductors product is automotive qualified, the product is not suitable for automotive use. It is neither qualified nor tested in accordance with automotive testing or application requirements. NXP Semiconductors accepts no liability for inclusion and/or use of non-automotive qualified products in automotive equipment or applications. In the event that customer uses the product for design-in and use in automotive applications to automotive specifications and standards, customer (a) shall use the product without NXP Semiconductors' warranty of the
(c) NXP B.V. 2010. All rights reserved.
14.3 Disclaimers
Limited warranty and liability -- Information in this document is believed to be accurate and reliable. However, NXP Semiconductors does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information. In no event shall NXP Semiconductors be liable for any indirect, incidental, punitive, special or consequential damages (including - without limitation - lost profits, lost savings, business interruption, costs related to the removal or replacement of any products or rework charges) whether or not such damages are based on tort (including negligence), warranty, breach of contract or any other legal theory. Notwithstanding any damages that customer might incur for any reason whatsoever, NXP Semiconductors' aggregate and cumulative liability towards customer for the products described herein shall be limited in accordance with the Terms and conditions of commercial sale of NXP Semiconductors. Right to make changes -- NXP Semiconductors reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the publication hereof. Suitability for use -- NXP Semiconductors products are not designed, authorized or warranted to be suitable for use in medical, military, aircraft, space or life support equipment, nor in applications where failure or
TEA1733T_TEA1733LT_2
All information provided in this document is subject to legal disclaimers.
Product data sheet
Rev. 02 -- 26 March 2010
18 of 20
NXP Semiconductors
TEA1733T; TEA1733LT
GreenChip III SMPS control IC
product for such automotive applications, use and specifications, and (b) whenever customer uses the product for automotive applications beyond NXP Semiconductors' specifications such use shall be solely at customer's own risk, and (c) customer fully indemnifies NXP Semiconductors for any liability, damages or failed product claims resulting from customer design and use of the product for automotive applications beyond NXP Semiconductors' standard warranty and NXP Semiconductors' product specifications.
14.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. GreenChip -- is a trademark of NXP B.V.
15. Contact information
For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com
TEA1733T_TEA1733LT_2
All information provided in this document is subject to legal disclaimers.
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 -- 26 March 2010
19 of 20
NXP Semiconductors
TEA1733T; TEA1733LT
GreenChip III SMPS control IC
16. Contents
1 2 2.1 3 4 5 6 6.1 6.2 7 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 7.10 7.11 7.12 7.13 7.14 8 9 10 11 12 13 14 14.1 14.2 14.3 14.4 15 16 General description . . . . . . . . . . . . . . . . . . . . . . 1 Features and benefits . . . . . . . . . . . . . . . . . . . . 1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pinning information . . . . . . . . . . . . . . . . . . . . . . 4 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4 Functional description . . . . . . . . . . . . . . . . . . . 5 General control . . . . . . . . . . . . . . . . . . . . . . . . . 5 Start-up and UnderVoltage LockOut (UVLO) . . 5 Supply management. . . . . . . . . . . . . . . . . . . . . 6 Input voltage detection (VINSENSE pin) . . . . . 6 Protection input (PROTECT PIN) . . . . . . . . . . . 6 Duty cycle control (CTRL pin). . . . . . . . . . . . . . 7 Slope compensation (CTRL pin). . . . . . . . . . . . 7 Overpower timer (OPTIMER pin) . . . . . . . . . . . 7 Current mode control (ISENSE pin) . . . . . . . . . 8 Overpower or high/low line compensation (VINSENSE and ISENSE pins) . . . . . . . . . . . . 9 Soft start-up (ISENSE pin) . . . . . . . . . . . . . . . . 9 Low power operation . . . . . . . . . . . . . . . . . . . 10 Driver (pin DRIVER) . . . . . . . . . . . . . . . . . . . . 10 OverTemperature Protection (OTP) . . . . . . . . 10 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 10 Thermal characteristics . . . . . . . . . . . . . . . . . 11 Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 12 Application information. . . . . . . . . . . . . . . . . . 14 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 16 Revision history . . . . . . . . . . . . . . . . . . . . . . . . 17 Legal information. . . . . . . . . . . . . . . . . . . . . . . 18 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 18 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Contact information. . . . . . . . . . . . . . . . . . . . . 19 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Please be aware that important notices concerning this document and the product(s) described herein, have been included in section `Legal information'.
(c) NXP B.V. 2010.
All rights reserved.
For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com Date of release: 26 March 2010 Document identifier: TEA1733T_TEA1733LT_2

▲Up To Search▲

Price & Availability of TEA1733T10

	To Download TEA1733T10 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .