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XC9220/XC9221 Series
16V Input Voltage, Step-Down DC/DC Controller ICs.
ETR0511_007
The XC9220/XC9221 series is a group of multi-purpose step-down DC/DC controller ICs. The ICs enable a high efficiency, stable power supply with an output current up to 3A to be configured using only a transistor, a coil, a diode, and two capacitors connected externally. Low ESR capacitors such as a ceramic capacitor can be used as an output capacitor. The XC9220/XC9221 series has a 0.9V (1.5%) reference voltage, and using externally connected resistors, the output voltage can be set freely. With an internal switching frequency of 300kHz and 500kHz 1.0MHz, small external components can also be used. The XC9220 series is PWM control, and the XC9221 series is PWM/PFM mode, which automatically switches from PWM to PFM during light loads and high efficiencies can be achieved over a wide range of load conditions. As for the soft-start time, the XC9220/XC9221A and C series is internally set to 4msec and the XC9220/XC9221B and D series can be externally set-up. With the built-in U.V.L.O. (Under Voltage Lock Out) function, the internal P-channel driver transistor is forced OFF when input voltage becomes 2.3V or lower.
GENERAL DESCRIPTION
APPLICATIONS
Set top boxes Digital TVs DVD/HDD recorders Portable information terminals Notebook computers
FEATURES
Operating Voltage Range : 2.8V ~ 16.0V Output Voltage Range : 1.2V or more Output Voltage Externally Set : 0.9V (accuracy +1.5%) Output Current : Less than 3.0A Oscillation Frequency : 300kHz, 500kHz, and 1.0MHz Control Methods : PWM control (XC9220) PWM/PFM automatic switching (XC9221) Soft-Start Function : 4ms, internally set (XC9220/XC9221A, 500kHz) Externally set (XC9220/XC9221B) : Integral protection (1.0 ms) (XC9220/XC9221 Aand B series) Short-circuit protection Low ESR Capacitor Compatible Packages : Ceramic capacitor : SOT-25 USP-6C
Protection Circuits
TYPICAL APPLICATION CIRCUIT
V IN
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency vs. Output Current
XC9221A095MR (VOUT=3.3V, FOSC=500kHz) F (OS-Con), CL=47 F (OS-Con), L=10 H (CDRH8D43, SUMIDA) PchMOSFET: CPH3308 (SANYO), CDD=1.0 F (ceramic), RIN=10 100 CIN=47
CIN CE 1 2 3 CE GND EXT FB 4 SBD V IN Pch MOSFET L RS ENS E ( f or ceramic CL ) VOUT
Efficiency EFFI (%)
* RSENSE : Tantalum and electrolytic capacitors can be used, in w hich case, RSENSE becomes unnecessary.
5
90 80 70 60 50 40 30 20 10 0 0.1
VIN=5.0V
CFB
RFB1 CL RFB2
VIN=16.0V VIN=12.0V
1
10
100
1000
10000
Output CurrentIOUT (mA)
1/22
XC9220/XC9221 Series
PIN CONFIGURATION
VIN
5
EXT/
4
1
2
3
* The dissipation pad for the USP-6C package (preliminary) should be solder-plated in recommended mount pattern and metal masking so as to enhance mounting strength and heat release. If the pad needs to be connected to other pins, it should be connected to the VSS (No.5) pin.
CE/CSS VSS
FB
USP-6C (BOTTOM VIEW)
SOT-25 (TOP VIEW)
PIN ASSIGNMENT
PIN NUMBER SOT-25 USP-6C 1 2 3 4 5 6 5 4 3 2 1 PIN NAME CE/CSS VSS FB EXT/ NC VIN FUNCTION Chip Enable / Soft-Start Ground Output Voltage Sense External Transistor Drive No Connection Power Supply
PRODUCT CLASSIFICATION
Ordering Information
XC9220123456: PWM control XC9221123456: PWM/PFM automatic switching control DESIGNATOR DESCRIPTION Type of DC/DC Controller ICs SYMBOL A B C D DESCRIPTION : Soft-start internally set with integral protection function : Soft-start externally set with integral protection function : Soft-start internally set without integral protection function : Soft-start externally set without integral protection function : FB Voltage (Fixed) : 300kHz : 500kHz : 1.0MHz : SOT-25 : USP-6C : Embossed tape, standard feed : Embossed tape, reverse feed
1
23 4 5 6
Output Voltage
09 3
Oscillation Frequency
5 A M E R L
Package Device Orientation
2/22
XC9220/XC9221
Series
BLOCK DIAGRAMS
XC9220/21A and C series XC9220/21B and D series
ABSOLUTE MAXIMUM RATINGS
Ta = 25OC
PARAMETER VIN Pin Voltage FB Pin Voltage CE/CSS Pin Voltage EXT/ Pin Voltage EXT/ Pin Current Power Dissipation SOT-25 USP-6C SYMBOL VIN VFB CE VEXT IEXT Pd Topr Tstg RATINGS - 0.3 ~ + 18.0 - 0.3 ~ VIN + 0.3 - 0.3 ~ VIN + 0.3 - 0.3 ~ VIN + 0.3 + 100 250 100 - 40 ~ + 85 - 55 ~ +125 UNITS V V V V mA mW
O O
Operating Temperature Range Storage Temperature Range
C C
3/22
XC9220/XC9221 Series
ELECTRICAL CHARACTERISTICS
XC9220/XC9221 A and C series
PARAMETER FB Voltage Input Voltage Range U.V.L.O. Voltage (Minimum Operating Voltage) Supply Current 2 Stand-by Current Oscillation Frequency Maximum Duty Ratio PFM Duty Ratio EXT/ High On Resistance EXT/ Low On Resistance Integral Protection Time (*2) Short-Circuit Protection Soft-Start Time Efficiency (*1) FB Voltage Temperature Characteristics CE "High" Level Voltage CE "Low" Level Voltage CE "High" Level Current CE "Low" Level Current FB "High" Level Current FB "Low" Level Current
Unless otherwise stated, VIN=5.0V NOTE: *1: EFFI = { (output voltage) x (output current)} / { (input voltage) x (input current) } x 100 *2: No Integral protection function is available with the XC9220/9221 C series. ** Refer to the CHARACTERISTICS CHART BY OSCILLATION FREQUENCY.
Ta = 25OC CONDITIONS MIN. 0.8865 2.8 1.9 VIN=5.0V, FB=1.0V Connected to external components No load (XC9221 series only) 100 15 6 6 TYP. MAX. UNIT. V V V A A kHz 35 16 20 % % ms 0.7 0.3 0.1 0.1 0.1 0.1 V ms % ppm O /C V V A A A A CIRCUIT 2 3 1 1 3 2 3 4 4 2 2 2 3 2 2 3 1 1 4 4 0.9000 0.9135 16.0 2.3 ** 0.1 ** 25 10 12 ** 1.2 - 0.1 - 0.1 - 0.1 - 0.1 ** 92 +100 2.7
SYMBOL VFB VIN VUVLO IDD2 ISTB FOSC MAXDTY PFMDTY REXTBH REXTBL TPRO VSHORT TSS EFFI VFB Topr VFB VCEH VCEL ICEH ICEL IFBH IFBL
1.0
(XC9220/9221 A series)
VIN=CE=16V VIN=16V, CE=0V VIN=FB=16V VIN=16V, FB=0V
4/22
XC9220/XC9221
Series
ELECTRICAL CHARACTERISTICS (Continued)
XC9220/XC9221 B and D series
PARAMETER FB Voltage Input Voltage Range U.V.L.O. Voltage (Minimum Operating Voltage) Supply Current 2 Stand-by Current Oscillation Frequency Maximum Duty Ratio PFM Duty Ratio EXT/ High On Resistance EXT/ Low On Resistance Integral Protection Time (*4) Short-Circuit Protection Soft-Start Time Internal Soft-Start Time (*1) Efficiency (*2) FB Voltage Temperature Characteristics CE "High" Level Voltage (*3) CE "Low" Level Voltage CE "High" Level Current CE "Low" Level Current FB "High" Level Current FB "Low" Level Current SYMBOL VFB VIN VUVLO IDD2 ISTB FOSC MAXDTY PFMDTY REXTBH REXTBL TPRO VSHORT TSS TSS_IN EFFI VFB Topr VFB VCEH VCEL ICEH ICEL IFBH IFBL VIN=5.0V, FB=1.0V Connected to external components No load (XC9221 series only) 100 15 6 6 CONDITIONS MIN. 0.8865 2.8 1.9 TYP. MAX. Ta = 25OC UNIT. V V V A A kHz 35 16 20 % % ms 0.7 20.0 0.3 0.1 0.1 0.1 0.1 V ms ms % ppm /OC V V A A A A CIRCUIT 2 3 1 1 3 2 3 4 4 2 2 5 2 3 2 2 2 1 1 4 4
0.9000 0.9135 16.0 2.3 ** 0.1 ** 25 10 12 ** 2.7
1.0
(XC9220/9221 B series) 5.0 2.6 - 0.1 - 0.1 - 0.1 - 0.1
Connected to RSS and CSS CE=VIN
10.0 ** 92 +100 -
VIN=CE=16V VIN=16V, CE=0V VIN=FB=16V VIN=16V, FB=0V
Unless otherwise stated, VIN=5.0V External components: CSS=0.1 F, RSS=200k NOTE: *1: Internal soft-start time: In case where the U.V.L.O. function operates temporarily due to the power cutoff etc. when an external CSS is charged (VCE>2.6V), the IC restarts operation by the internal soft-start time. Minimum value of soft-start time set externally is equal to the internal soft-start time. *2: EFFI={ (output voltage) x (output current) } / { (input voltage) x (input current) } x 100 *3: The integral latch and short-circuit protection do not function when the CE/CSS pin voltage become lower than 2.6V while the soft-start time. *4: No Integral protection function is available with the XC9220/XC9221 D series. ** Refer to the CHARACTERISTICS CHART BY OSCILLATION FREQUENCY.
CHARACTERISTICS CHART BY OSCILLATION FREQUECY
PARAMETER Supply Voltage 2 Oscillation Frequency Integral Protection Time Soft-Start Time SYMBOL IDD2 FOSC TPRO TSS MIN. 255 0.5 2 300kHz TYP. 25 300 1.0 4 MAX. 50 345 2.0 8 MIN. 425 0.5 2 500kHz TYP. 25 500 1.0 4 MAX. 50 575 2.0 8 MIN. 850 0.25 1 1.0MHz TYP. 40 1000 0.50 2 MAX. 80 1150 1.00 4
5/22
XC9220/XC9221 Series
TYPICAL APPLICATION CIRCUITS
External Components Pch MOSFET: 2SJ646 (SANYO) SBD: DE5PC3 (SHINDENGEN) L: CDRH8D28-4R7 (4.7 H, SUMIDA / Fosc=1.0MHz) CDRH8D43-100 (10 H, SUMIDA / Fosc=500kHz) CDRH127-220 (22 H, SUMIDA / Fosc=300kHz) CIN: 47 F (OS-CON, SANYO) CL: 47 F (OS-CON, SANYO)
OPERATIONAL EXPLANATION
The XC9220/XC9221 series consists of a reference voltage source, ramp wave circuit, error amplifier, PWM comparator, phase compensation circuit, protection circuits, U.V.L.O. circuit and others. The series ICs compare, using the error amplifier, the voltage of the internal voltage reference source with the feedback voltage from the VOUT pin through split resistors. Phase compensation is performed on the resulting error amplifier output, to input a signal to the PWM comparator to determine the turn-on time during PWM operation. The PWM comparator compares, in terms of voltage level, the signal from the error amplifier with the ramp wave from the ramp wave circuit, and delivers the resulting output to the buffer driver circuit to cause the EXT pin to output a switching duty cycle. This process is continuously performed to ensure stable output voltage. The reference voltage source provides the reference voltage to ensure stable output voltage of the DC/DC converter. The oscillator determines switching frequency. The frequency is fixed internally and can be selected from 300kHz, 500kHz and 1.0MHz. Clock pulses generated in this circuit are used to produce ramp waveforms needed for PWM operation, and to synchronize all the internal circuits. The error amplifier is designed to monitor output voltage. The amplifier compares the reference voltage with the feedback voltage (FB pin voltage) divided by the internal split resistors. When a voltage lower than the reference voltage is fed back, the output voltage of the error amplifier increases. The gain and frequency characteristics of the error amplifier output are fixed internally to deliver an optimized signal to the PWM comparator. The XC9220 series is PWM control, and the XC9221 series is PWM/PFM automatic switching mode. In the XC9220 series, it is controlled at a constant frequency from light load to heavy load. When a noise etc. is concerned, it is easy to set up a filter etc. since the frequency is fixed. On the other hand, the efficiency at the time of light load may fall. In the XC9221 series, the high efficiency can be drawn from PFM control at the time of light load. In PWM/PFM automatic switching mode, a control method is automatically changed from PWM control to PFM control at the time of light load. If coil current becomes discontinuous at the time of light load, ON time duty intends to reduce less than 25%. Therefore, the PFM circuit operates to output the pulse, which ON time duty fixed to 25% from the EXT/pin. The ON time duty is fixed when PFM operation. The pulse is outputted with the cycle suitable for the conditions at that time. In order that the number of times of switching per unit time may decrease, the efficiency, which it is at the light load time is improved. However, output cycle of the pulse cannot be fixed. For this, the circuit should be designed with this point in mind when using a noise filter etc. The conditions shifting to the PFM operation is depend on values of input voltage, load current, coil and so on.
6/22
XC9220/XC9221
Series
OPERATIONAL EXPLANATION (Continued)
When the input voltage becomes 2.3V (TYP.) or lower, the external P-channel driver transistor is forced OFF. Once the U.V.L.O. operates, the XC9220/XC9221A and C series (soft-start internally set type) resets the internal circuit. For this, by releasing the U.V.L.O. function, the IC performs the soft-start function to initiate output startup operation. When the input voltage falls because of a power cutoff etc. and the IC stops operation due to the U.V.L.O. function, the IC resumes its operation by internal soft-start circuit of the XC9220/XC9221B and D series. If the soft-start time is needed to set externally, the CE/CSS pin voltage should be reset to 0V. (Please see the soft-start circuit example.) U.V.L.O. Operation
U.V .L.O. operation
VIN U.V.L.O. ( Internal Signal) VOUT (XC9220/21A and C series) VOUT (XC9220/21B and D series)
U.V .L.O. release delay Sof t-start time: Tss1 Sof t-start time (Externally set-up) :Tss2 U.V .L.O. release delay Sof t-start time:Tss1

The XC9220/XC9221B and D series can adjust the soft-start time externally via the CE pin. The soft-start function operates until the CE pin voltage becomes 2.6V. Please refer to the following equation for calculating the soft-start time. Minimum soft-start time is equal to the time set internally. TSS= - CSS x RSS x In { (VCE - 2.2) / VCE }
Internal sotf-starttime:Tss1 (XC9220/21A series) XC9220/21A series CE/CSS PIN VCE Css XC9220/21B series Minimum soft-start time when externally set: Tss2_min = Tss1 Externally set soft-start time: Tss2 (XC9220/21A series)
Rss
> Circuit Example1 : N-ch Open Drain VCE
> Circuit Examle2 : CMOS logic (low current dissipation) > Cicuit Examle3 : CMOS logic (low current dissipation, quick off)
VCE Rss ON/OFF Signal ON/OFF Signal Css CE/CSS PIN Css Rss CE/CSS PIN ON/OFF Signal
VCE Rss CE/CSS PIN Css
7/22
XC9220/XC9221 Series
OPERATIONAL EXPLANATION (Continued)
1. Integral Protection Circuit (Latch Type) In the circuit of the XC9220/XC9221 A and B series, the more load current becomes larger, the duty of the EXT/ pin gradually expands, and the duty reaches maximum (EXT/L). When the MAXDUTY state continues a certain amount of time (TPRO), the EXT/ pin holds high level (latching) and keeps the P-ch output driver transistor in OFF state. For resuming the operation from the latching state, please turn off the IC via the CE pin or apply the input voltage again (operates U.V.L.O. function and release). The latching state does not mean a complete shutdown, but a state in which pulse output is suspended; therefore, the internal circuitry remains in operation. However, the integral protection circuit uses the MAXDUTY as a trigger for its operation, it suspends the pulse output no matter what dropout voltage decreases. For the specification including small dropout voltage, the XC9220/XC9221 C or D series, which do not have the integral protection function, are recommended. Integral protection circuit
EXT/ Waveform
Latch
Ton : ON Time ( EXT/ : L) Tpro : Integral Protection Circuit Delay Time (Internally set)
Ton < Tpro
Ton > Tpro
Protection circuit operates and EXT/ Output shut dow n
2. Short-Circuit Protection Circuit (Latching Type) When the FB pin is shorted to the Ground or the output voltage drops rapidly because of over load state etc., the P-ch driver transistor is kept OFF as in the case with the integral protection circuit. (The protection circuit operates when the FB voltage becomes 0.7V or lower.) For releasing the latching state, the circuit is needed to restart via the VIN and the CE pin. Short-circuit protection circuit
FB Voltage
0.9V 0.7V
Latch
VREF
Less than 100usec = Not latching Sof t-start time Tss x 90% * Protection circuit does not operate. * A bout 100 to 200usec delay time is set to avoid latching w hen instantaneous transient response drop
0.9V
100 usec
8/22
XC9220/XC9221
Series
OPERATIONAL EXPLANATION (Continued)
Output Voltage Setting Output voltage can be set by adding split resistors. Output voltage is determined by the following equation, based on or less. the values of RFB1 and RFB2. The sum of RFB1 and RFB2 should normally be 1M VOUT = 0.9 x (RFB1 + RFB2) / RFB2 The value of CFB, speed-up capacitor for phase compensation, should be adjusted by the following equation. Fzfb should usually be 5kHz. Adjustments are required from 1kHz to 20kHz depending on the application, value of inductance (L), and value of load capacity (CL). CFB = 1 / (2 x x RFB1 x fzfb) [Sample calculation: Setting 3.3V VOUT] RFB1 = 200k , RFB2=75k , VOUT = 0.9 x (200k + 75k) / 75k = 3.300V CFB = 1 / (2 x x 200k x 5k) =150pF [Typical examples] VOUT (V) 1.2 1.5 1.8 RFB1 (k ) 100 180 220 RFB2 (k ) 300 270 220 CFB (pF) 330 180 150 VOUT (V) 3.3 5.0 12.0 RFB1 (k ) 200 150 160 RFB2 (k ) 75 33 13 CFB (pF) 150 220 180
Recommended MOSFET and SBD (Examples) IOUT P-ch MOSFET (*1) Schottky Barrier Diode (SBD) (*2)
*1: *2:
UP TO 500mA CPH3308 (SANYO) XB01SB04A2BR (TOREX)
UP TO 1A
UP TO 2A 2SJ616 (SANYO)
UP TO 3A 2SJ646 (SANYO) DE5PC3 (SHINDENGEN)
D1FH3 (SHINDENGEN) CMS02 (TOSHIBA)
Recommended to use P-ch MOSFET with Ciss less than 1500pF. SBD should be used with high-toned reverse characteristics.
Ceramic Capacitor With the XC9220/9221 series, a ceramic capacitor can be used as an output capacitor (CL). RSENSE resistor is required for using the ceramic capacitor. The value of RSENSE resistor is determined depending on the setting output voltage as the chart below. OUTPUT VOLTAGE VOUT 2.5V VOUT>2.5V RSENSE (m ) 100 50 External Components P-ch MOSFET: 2SJ646 (SANYO) SBD: DE5PC3 (SHINDENGEN) L: CDRH8D28-4R7 (4.7 H, SUMIDA / Fosc=1.0MHz) CDRH8D43-100 (10 H, SUMIDA / Fosc=500kHz) CDRH127-220 (22 H, SUMIDA / Fosc=300kHz) CIN: 22 F (ceramic) CL: 22 F (ceramic / Fosc=1.0MHz, 500kHz) 47 F (ceramic / Fosc=300kHz) RSENSE: 100m (VOUT 2.5V) 50m (VOUT 2.5V)
9/22
XC9220/XC9221 Series
OPERATIONAL EXPLANATION (Continued)
Setting of Coil Value Recommended inductance value of coil by oscillation frequency is shown in the chart below. FOSC (kHz) 300 500 1000 L ( H) 22.0 10.0 4.7
However, the more current change in each pulse becomes larger, the more output ripple voltage becomes higher when dropout voltage is high. This may lead to instability. In this case, increasing the coil inductance value will make Ipk_AC small, and it makes output stable. Ipk_AC = (VIN - VOUT) x VOUT / (VIN x L x FOSC) L: Coil inductance value FOSC: Oscillation frequency Please do not exceed the coil rating. Coil peak current is determined by the following equation. Ipk = IOUT + Ipk_AC / 2
10/22
XC9220/XC9221
Series
NOTES ON USE
1. The XC9220/XC9221 series are designed for use with an output ceramic capacitor. If, however, the potential difference between input and output is too large, a ceramic capacitor may fail to absorb the resulting high switching energy and oscillation could occur on the output. If the input-output potential difference is large, connect the output capacitor with large performance to compensate for insufficient capacitance. 2. Spike noise and ripple voltage arise in a switching regulator as with a DC/DC converter. These are greatly influenced by external component selection, such as the coil inductance, capacitance values, and board layout of the external components. Once the design has been completed, verification with actual components should be done. 3. When the difference between input voltage and output voltage is large in PWM control, and the load current is light, very narrow pulses will be outputted, and there is the possibility that some cycles my be skipped completely. 4. When the difference between input voltage and output voltage is small in PWM control, and the load current is heavy, very wide pulses will be outputted and there is the possibility that some cycles my be skipped completely. 5. When using the CE pin by pulling up to the VIN pin, please be noted to the rising time of the VIN pin voltage. If the rising time of the VIN pin voltage is much slower than the soft-start time of the XC9220/XC9221 series, the short-protection circuit starts to operate so that the output may not rise. If you are using the A or the C series, please use a voltage detector or something similar in order to check that the input voltage rises fully. Then, start the series via the CE pin. If you don't want to use an additional detector in this way, we recommend that you use the B or D series, adjusting the soft-start period externally so that the voltage at the VIN pin rises fully before the soft-start period is completed.
6. Use of the IC at voltages below the recommended minimum operating voltage may lead to instability. 7. This IC and external components should be used within the stated absolute maximum ratings in order to prevent damage to the device.
11/22
XC9220/XC9221 Series
NOTES ON USE (Continued)
Instructions on Pattern Layout 1. Wire external components as close to the IC as possible and use thick, short connecting traces to reduce the circuit impedance. 2. Please strengthen VIN and VSS wiring in particular. Switching noise which occurs from the GND may cause the instability of the IC. The IC can maintain stable operations with RIN (about 10 ) and CDD (about 1 F) connected to the VIN pin.
[Board layout when XC9220/XC9221 series is mounted with external components]
Ceramic Capacitor Schottky Barrier Diode Inductor Resistor Low value resistor
[PC board for the XC9220/XC9221 series]
12/22
XC9220/XC9221
Series
TEST CIRCUITS
Circuit 1: Supply Current, Stand-by Current, CE Current Circuit 2: FB Voltage, Integral Protection, Short-Circuit, Soft-Start, MAXDUTY, CE Voltage
Probe
VIN
VIN EXT /
EXT /
CE/CSS
FB VSS
A
CIN:1uF
A
CE/CSS VSS
FB
V
CIN:1uF
V
Circuit 3: Oscillation Frequency, PFMDUTY, U.V.L.O., Efficiency
Circuit 4: EXT On Resistance, FB Current
Circuit 5: Soft-Start (Externally set: B and D series)
Probe
VIN CIN:1uF EXT /
VIN
EXT /
V
CE/CSS VSS
FB
A
A V
Rss CE/CSS FB VSS
Css
V
V
CIN:1uF
13/22
XC9220/XC9221 Series
ELECTRICAL CHARACTERISTICS (Continued)
(1) Efficiency vs. Output Current
XC9220/21x095xx
Tr:2SJ646, SBD:DE5PC3, CDRH127-10uH, CIN=10uF(ceramic), CL=44uF(ceramic), RSENSE=50mohm VIN=12V => VOUT=5V
XC9220/21x095xx
Tr:2SJ646, SBD:DE5PC3, CDRH127-10uH CIN=10uF(ceramic), CL=44uF(ceramic), RSENSE=50mohm VOUT=3.3V
100 90 80 Efficiency: EFFI (%)
100 90 80 Efficiency: EFFI (%) 70 60 50 40 30 20 10 0 0.1
VIN=5.0V
70 60 50 40 30 20 10 0 0.1 1 10 100 1000 10000 Output Current: IOUT (mA)
PWM(XC9220) PFM(XC9221)
VIN=12V
PWM(XC9220) PFM(XC9221)
1
10
100
1000
10000
Output Current: IOUT (mA)
(2) Output Voltage vs. Output Current
XC9220/21x095xx
Tr:2SJ646, SBD:DE5PC3, CDRH127-10uH CIN=10uF(ceramic), CL=44uF(ceramic), RSENSE=50mohm VIN=12V => VOUT=5V
XC9220/21x095xx
Tr:2SJ646, SBD:DE5PC3, CDRH127-10uH CIN=10uF(ceramic), CL=44uF(ceramic), RSENSE=50mohm VOUT=3.3V
5.4 Output Voltage: VOUT (V) 5.2 5.0 4.8 4.6
3.7 Output Voltage: VOUT (V) 3.5 3.3 3.1 2.9 2.7
VIN=5.0V 12V
PWM(XC9220) PFM(XC9221)
PWM(XC9220) PFM(XC9221)
4.4 0.1 1 10 100 1000 10000 Output Current: IOUT (mA)
0.1
1
10
100
1000
10000
Output Current: IOUT (mA)
(3) Output Ripple Voltage vs. Output Current
XC9220/21x095xx
Tr:2SJ646, SBD:DE5PC3, CDRH127-10uH CIN=10uF(ceramic), CL=44uF(ceramic), RSENSE=50mohm VIN=12V => VOUT=5V
XC9220/21x095xx
Tr:2SJ646, SBD:DE5PC3, CDRH127-10uH CIN=10uF(ceramic), CL=44uF(ceramic), RSENSE=50mohm VOUT=3.3V
100 80 60 40 20 0 0.1
100 90 80 70 60 50 40 30 20 10 0
Ripple Voltage: Vr (mV)
Ripple Voltage: Vr (mV)
PWM(XC9220) PFM(XC9221)
PWM(XC9220) PFM(XC9221)
VIN=5.0V VIN=12V
1
10
100
1000
10000
0.1
1
10
100
1000
10000
Output Current: IOUT (mA)
Output Current: IOUT (mA)
14/22
XC9220/XC9221
Series
ELECTRICAL CHARACTERISTICS (Continued)
(4) FB Voltage Temperature Characteristics
XC9220/21 Series
(5) FB Voltage vs. Input Voltage
XC9220/21 Series
1.00 0.95 FB Voltage: VFB (V) 0.90 0.85 0.80 0.75 -50
VIN=5V
1.00 0.95 FB Voltage: VFB (V) 0.90 0.85 0.80 0.75 -25 0 25 50 75 100 2 4 6 8 10 12 14 16 Ambient Temperature: Ta ( ) Input Voltage: VIN (V)
Ta=85 25 -40
(6) Input Voltage Temperature Characteristics
XC9220/21 Series
(7) Supply Current vs. Input Voltage
XC9220/21 Series
50 Supply Current: IDD (uA) 40 30 20 10 0 -50
VIN=5V, Fosc=300k,500kHz
50 40 30 20
Fosc=300k,500kHz
Supply Current: IDD (uA)
Ta=85
10 0
25 -40
-25
0
25
50
75
100
0
2
4
6
8
10
12
14
16
Ambient Temperature: Ta ( )
Input Voltage: VIN (V)
(8) Oscillation Frequency Temperature Characteristics
XC9220/21x095xx
(9) U.V.L.O. Temperature Characteristics
XC9220/21Series
550
VIN=5V
2.8 UVLO Voltage: VUVLO (V) 2.6
UVLO(Release)
Frequency: FOSC (kHz)
525 500 475 450 425 400 -50
2.4 2.2 2.0 1.8 -50
UVLO(Detect)
-25
0
25
50
75
100
-25
0
25
50
75
100
Ambient Temperature: Ta ( )
Ambient Temperature: Ta ( )
15/22
XC9220/XC9221 Series
ELECTRICAL CHARACTERISTICS (Continued)
(10) EXT H ON Resistance Characteristics
XC9220/21 Series
(11) EXT L ON Resistance Characteristics
XC9220/21Series
30 EXT/H Resistance:REXTBH () 25 20
Ta=85
30 EXT/L Resistance:REXTBL () 25 20 15 10 5 0 0 2 4 6 8 10 12 14 16 0 2 4 6 8 10 12 14 16 Input Voltage: VIN (V) Input Voltage: VIN (V)
Ta=85 25 -40
15 10 5 0
25 -40
(11) Soft-Start Time Temperature Characteristics
XC9220/21 Series XC9220/21Series
8.0 Soft-Start Time: TSS (msec) 7.0 6.0 5.0 4.0 3.0 2.0 -50
VIN=5V, Fosc=300k,500kHz
4.0 Soft-Start Time : TSS (msec) 3.5 3.0 2.5 2.0 1.5 1.0 -50
VIN=5V, Fosc=1.0MHz
-25
0
25
50
75
100
-25
0
25
50
75
100
Ambient Temperature: Ta ( )
Ambient Temperature: Ta ( )
(12) Integral Protection Time Temperature Characteristics
XC9220/21A, B Series XC9220/21A, B Series
Integral Protection Time: Tpro (msec)
2.0 1.6
VIN=5V, Fosc=300k,500kHz
1.0 Integral Protection Time: Tpro (msec)
VIN=5V, Fosc=1MHz
0.8 0.6
1.2 0.8
0.4 0.2
0.4 0.0 -50
-25
0
25
50
75
100
0.0 -50
-25
0
25
50
75
100
Ambient Temperature: Ta ( )
Ambient Temperature: Ta ( )
16/22
XC9220/XC9221
Series
ELECTRICAL CHARACTERISTICS (Continued)
(13) Short-Circuit Protection Temperature Characteristics
XC9220/21 Series
(14) Short-Circuit Protection Voltage vs. Input Voltage
XC9220/21 Series
0.8 Short-Protection Voltage: Vshort (V) 0.7
VIN=5V
0.8 Short-Protection Voltage: Vshort (V)
0.7 0.6
0.6 0.5
0.5 0.4
0.4 0.3 -50
0.3 -25 0 25 50 75 100 0 2 4 6 8 10 12 14 16 Ambient Temperature: Ta ( ) Input Voltage: VIN (V)
(15) CE Threshold Temperature Characteristics
XC9220/21 Series
(16) CE Threshold vs. Input Voltage
XC9220/21 Series
1.2 CE Voltage: VCEH, VCEL (V) 1.0 0.8 0.6
CE_L CE_H
VIN=5V
1.2 CE Voltage: VCEH, VCEL (V) 1.0
CE_H
0.8 0.6 0.4 0.2 0.0
CE_L
0.4 0.2 0.0 -50
-25
0
25
50
75
100
0
2
4
6
8
10
12
14
16
Ambient Temperature: Ta ( )
Input Voltage: VIN (V)
17/22
XC9220/XC9221 Series
ELECTRICAL CHARACTERISTICS (Continued)
(17) Load Transient Response Characteristics
XC9220x095xx (500kHz, PWM Control) Tr: 2SJ616 (SANYO), SBD: D1FH3 (SHINDENGEN), L=10 H CDRH8D43, SUMIDA) CIN=47 F (OS-Con), CL=47 F (OS-Con) IOUT=0.1mA 1000mA
VIN=5.0V, VOUT=3.3V, VOUT=100mV/div., Time=50 s/div. VIN=5.0V, VOUT=3.3V, VOUT=100mV/div., Time=10ms/div.
IOUT=0.1mA 1000mA
VIN=10.0V, VOUT=3.3V, VOUT=100mV/div., Time=50 s /div. VIN=10.0V, VOUT=3.3V, VOUT=100mV/div., Time=10ms/div.
IOUT=300mA
3000mA
s /div. VIN=10.0V, VOUT=3.3V, VOUT=100mV/div., Time=10ms/div.
VIN=10.0V, VOUT=3.3V, VOUT=100mV/div., Time=50
18/22
XC9220/XC9221
Series
PACKAGING INFORMATION
SOT-25 (SOT-23-5)
USP-6C
19/22
XC9220/XC9221 Series
PACKAGING INFORMATION (Continued)
USP-6C Recommended Pattern Layout
USP-6C Recommended Metal Mask Design
20/22
XC9220/XC9221
Series
MARKING RULE
SOT-25
Represents product series MARK M N
PRODUCT SERIES XC9220xxxxxx XC9221xxxxxx
SOT-25 (TOP VIEW)
Represents product types MARK FUNCTION A Soft-start internally set with integral protection function B C D Soft-start externally set with integral protection function Soft-start internally set without integral protection function Soft-start externally set without integral protection function
PRODUCT SERIES XC922xAxxxxx XC922xBxxxxx XC922xCxxxxx XC922xDxxxxx
Represents oscillation frequency MARK OSCILLATION FREQUENCY 3 300kHz 5 500kHz A 1.0MHz Represents production lot number 0 to 9, A to Z and inverted 0 to 9, A to Z repeated. (G, I, J, O, Q, W expected.) USP-6C Represents product series MARK 1 D Represent product types MARK
USP-6C (TOP VIEW)
PRODUCT SERIES XC922xxxx3xx XC922xxxx5xx XC922xxxxAxx
PRODUCT SERIES XC9220xxxxxx XC9221xxxxxx
FUNCTIONS
A B C D
Soft-start internally set with integral protection function Soft-start externally set with integral protection function Soft-start internally set without integral protection function Soft-start externally set without integral protection function
PRODUCT SERIES XC922xAxxxxx XC922xBxxxxx XC922xCxxxxx XC922xDxxxxx
Represents FB voltage MARK 0 9
FB VOLTAGE 0.9V fixed
PRODUCT SERIES XC922xx09xxx
Represents oscillation frequency MARK OSCILLATION FREQUENCY 3 300kHz 5 500kHz A 1.0MHz Represents production lot number 0 to 9, A to Z repeated. (G, I, J, O, Q, W expected.) * No character inversion used.
PRODUCT SERIES XC922xxxx3xx XC922xxxx5xx XC922xxxxAxx
21/22
XC9220/XC9221 Series
1. The products and product specifications contained herein are subject to change without notice to improve performance characteristics. Consult us, or our representatives before use, to confirm that the information in this catalog is up to date. 2. We assume no responsibility for any infringement of patents, patent rights, or other rights arising from the use of any information and circuitry in this catalog. 3. Please ensure suitable shipping controls (including fail-safe designs and aging protection) are in force for equipment employing products listed in this catalog. 4. The products in this catalog are not developed, designed, or approved for use with such equipment whose failure of malfunction can be reasonably expected to directly endanger the life of, or cause significant injury to, the user. (e.g. Atomic energy; aerospace; transport; combustion and associated safety equipment thereof.) 5. Please use the products listed in this catalog within the specified ranges. Should you wish to use the products under conditions exceeding the specifications, please consult us or our representatives. 6. We assume no responsibility for damage or loss due to abnormal use. 7. All rights reserved. No part of this catalog may be copied or reproduced without the prior permission of Torex Semiconductor Ltd.
22/22

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