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FUJITSU SEMICONDUCTOR DATA SHEET
DS04-27223-1E
ASSP
For Power Supply Applications
Multi-Resonance AC/DC Converter IC
MB3873
s DESCRIPTION
The MB3873 is a pulse frequency modulation (PFM) type multi-resonance AC/DC converter IC providing soft switching functions in a more compact, higher-efficiency, low-noise package. Since this product allows reduced number of the components and reduced size of the transformer, it is also compatible with the miniaturization of AC adaptor. The product retains the multi-resonance for the non-load, over-load and load short-circuit over the wide range of input voltage, making it the appropriate IC for the small-sized AC adaptor.
s FEATURES
* * * * * * * Operating power supply voltage : 10V to 28V Operating current : 2.5mA typ. Low standby current : 400A typ. Control frequency range : 10kHz to 800kHz Operating temperature range : -30C to +105C Soft start circuit on-chip Overvoltage detection circuit on-chip
(Continued)
s PACKAGE
16-pin plastic SOP
(FPT-16P-M06)
MB3873
(Continued)
* Overload detection circuit on-chip * Over temperature detection circuit on-chip * Under voltage lockout protection circuit on-chip
s PIN ASSIGNMENT
(TOP VIEW)
RT : 1 CT : 2 RD : 3 CD : 4 FB : 5 CS : 6 GND : 7 OUT : 8
16 : -IN 15 : +IN 14 : OVP 13 : OTP 12 : ENB 11 : VCC 10 : VREF 9 : VCC (O)
(FPT-16P-M06)
2
MB3873
s PIN DESCRIPTION
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol RT CT RD CD FB CS GND OUT VCC (O) VREF VCC ENB OTP OVP +IN -IN I/O -- -- -- -- I -- -- O -- O -- -- I I I I Descriptions Triangular wave oscillator frequency setting resistor connection pin Triangular wave oscillator frequency setting capacitor connection pin Dead time setting resistor connection pin Delay interval setting capacitor connection pin Control frequency control pin Soft start capacitor connection pin Ground pin Totem pole type output pin Output circuit power supply pin Reference voltage output pin Reference power and control circuit power supply pin UVLO voltage setting resistor connection pin Overtemperature detection comparator input pin Overvoltage detection comparator 1 input pin Overvoltage detection comparator 2 non-inverted input pin Overvoltage detection comparator 2 inverted input pin
3
0.98 V OVP Comp.1 Latch S R 2.5 V OCP Comp. 5V - - + UVLO Comp.2 + Q +
OVP 14 -
CD 4
10A
3.9 V
-IN 16
+
+IN 15 OSC Control -
+
-
4
MB3873
ENB 12 9.3 V/16 V OTP Comp. - 8V Ref Bias R2 25 k + 2.5 V/1.45 V Power ON/OFF R1 135 k UVLO Comp.1
s BLOCK DIAGRAM
VCC 11
VREF 10
OTP 13
9 VCC (O)
Drive
8 OUT
Dead time
"LO" output overload
OVP Comp.2 OSC One-Shot DTC
6
5 CS FB
2 CT
1 RT
3 RD
7 GND
MB3873
s ABSOLUTE MAXIMUM RAGINGS
Parameter Power supply voltage Output current Peak output current Power dissipation Storage temperature Symbol
VCC IO IO PD Tstg
Conditions
VCC, VCC (O) pin OUT pin OUT pin, Duty 5 % Ta +25C
Rating Min. -- -- -- -- -55 Max.
30 20 300 540*
Unit
V mA mA mW
--
+125
C
* : The packages are mounted on the dual-sided epoxy board (10 cm x 10 cm). WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current, temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings.
s RECOMMENDED OPERATING CONDITIONS
Parameter Power supply voltage Reference voltage output current Input voltage Output current Triangular wave oscillator frequency Timing capacitor Timing resistor Control frequency OSC control current Soft start capacitor Delay time capacitor Dead time resistor Operating ambient temperature Symbol VCC VCC (O) IOR VIN IO fOSC CT RT fOSC IFB CS CD RD Ta FB pin -- -- -- -- Conditions -- -- VCC (O) = VREF OTP, OVP pin +IN, -IN pin OUT pin FB = VREF, CS = OPEN -- -- FB controlled Value Min. 10 5 -10 0 0 -15 10 100 15 10 -1 -- -- 36 -30 Typ. 18 VREF -- -- -- -- 105 220 33 105 -- 0.1 0.1 120 25 Max. 28 28 0 VCC VREF 15 300 4700 47 800 -- 1.0 1.0 250 105 Unit V V mA V V mA kHz pF k kHz mA F F k C
WARNING: The recommended operating conditions are required in order to ensure the normal operation of the semiconductor device. All of the device's electrical characteristics are warranted when the device is operated within these ranges. Always use semiconductor devices within their recommended operating condition ranges. Operation outside these ranges may adversely affect reliability and could result in device failure. No warranty is made with respect to uses, operating conditions, or combinations not represented on the data sheet. Users considering application outside the listed conditions are advised to contact their FUJITSU representatives beforehand. 5
MB3873
s ELECTRICAL CHARACTERISTICS
(Ta = +25C, VCC = 18 V, VCC (O) = VREF) Parameter Output voltage Reference voltage block [Ref] Input stability Load stability Short circuit output current Under Threshold voltage voltage lockout circuit block Hysteresis width [UVLO] Triangular wave oscillator block [OSC]
Symbol Pin no
Conditions Ta = 25C Ta = -30 to +85C VCC = 10 V to 28 V VREF = 0 mA to -10 mA VREF = 4 V VCC = VCC = VH = VTLH - VTHL CT = 220 pF, RT = 33 k, FB = VREF, CS = OPEN CT = 220 pF, RT = 33 k, FB = -1 mA, CS = OPEN Ta = -30 to +85C CS = 0 V CS = 2 V CT = 220 pF, RT = 33 k, FB = VREF, CS = 0 V CT = 220 pF, RT = 33 k, FB = VREF, CS = OPEN RD = 120 k -- -- -- -- OVP = 0 V
Value Min. 7.6 7.44 -30 -- -35 15 8.8 -- 95 535 -- -35 -3.5 380 95 Typ. 8.0 8.0 -- 25 -25 16 9.3 6.7 105 630 1.0* -25 -2.5 450 105 Max. 8.4 8.56 30 50 -15 17 9.8 115 725 -- -15 -1.5 520 115
Unit V V mV mV mA V V V kHz kHz % A A kHz kHz
VREF Line Load IOS VTLH VTHL VH fOSC1
10 10 10 10 10 10 10 8 8 8 6 6 8 8
Oscillator frequency fOSC2 Frequency temperature stability Charge current f/fdt ICS1 ICS2 fCS1 Soft start frequency fCS2
Soft start block [CS]
Dead time control block [DTC] Overload detection block [OCP]
Dead time
tDEAD
8
400
500
600
ns A V A V
Threshold current Threshold voltage Charge current
ITH VTH ICD VTH
5 4 4 14
-60 3.7 -14 2.37
-40 3.9 -10 2.50
-20 4.1 -6 2.63
Overvoltage Threshold voltage detection comparator Input bias current block1 [OVP1] *: Standard design value.
IB
14
-400
-50
--
nA
(Continued)
6
MB3873
(Continued)
(Ta = +25C, VCC = 18 V, VCC (O) = VREF) Parameter Overvoltage detection comparator block2 [OVP2] Input offset voltage Common mode input voltage range Input current
Symbol
Pin no
Conditions
Value Min. -- Typ. -- -- -25 -25 0.98 Max. 10 VREF - 1.8 -- -- 1.03
Unit mV V nA nA V
VIO VCM IB1 IB2 VTH
15, 16 CS = 1.5 V 15, 16 15 16 13 -- +IN = 0 V, -IN = 3 V +IN = 3 V, -IN = 0 V --
0 -200 -200 0.93
Over Threshold voltage temperature detection Input bias current comparator block [OTP] Output sink current Output block [Drive] Output voltage Rise time Fall time Standby current General Operating power supply current Cut off power supply current *: Standard design value.
IB
13
OTP = 0 V
-400
-50
--
nA
Output source current ISOURCE ISINK VOH VOL tr tf ICCS ICC ICCL
8 8 8 8 8 8 11 11 11
Duty 5 %, OUT = 5 V Duty 5 %, OUT = 3 V OUT = -15 mA OUT = 15 mA CL = 100 pF CL = 100 pF VCC = 14 V VCC = 18 V VCC = 18 V, OTP = 2 V
-- -- 6.6 -- -- -- -- -- --
-60 100 7.1 0.9 25 20 400 2.5 450
-- -- -- 1.4 -- -- 600 3.8 680
mA mA V V ns ns A mA A
7
MB3873
s TYPICAL CHARACTERISTICS
Power supply current vs. power supply voltage Cut off power supply current ICCL (mA)
5
Cut off power supply current vs. power supply voltage
0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 0 10 20 30 40 50 Ta = +25 C OTP = 2 V
Power supply current ICC (mA)
Ta = +25 C 4 3 2 1 0 0 10 20 30 40 50
Power supply voltage VCC (V)
Power supply voltage VCC (V)
Reference voltage vs. power supply voltage
10 Ta = +25 C VREF = 0 mA 10
Reference voltage vs. VREF load current
Ta = +25 C VCC = 18 V
Reference voltage VREF (V)
8 6 4 2 0 0 10 20 30
Reference voltage VREF (V)
8 6 4 2 0 0 10 20 30
40
50
40
50
Power supply voltage VCC (V)
VREF load current IREF (mA)
Reference voltage vs. ambient temperature
9.0 8.8 8.6 8.4 8.2 8.0 7.8 7.6 7.4 7.2 7.0 -50 -25 0 25 50 75 100 125 VCC = 18 V
Reference voltage VREF (V)
Ambient temperature Ta ( C)
(Continued)
8
MB3873
(Continued)
Triangular oscillator frequency fOSC (kHz) Triangular oscillator frequency fOSC (kHz) Triangular oscillator frequency vs. timing resistor
1000 Ta = +25 C VCC = 18 V CT = 100 pF CT = 220 pF CT = 470 pF 10 CT = 1000 pF CT = 2200 pF CT = 4700 pF 1 10
Triangular oscillator frequency vs. timing capacitor
1000 Ta = +25 C VCC = 18 V RT = 33 k
100
100
10
100
1 10
100
1000
10000
Timing resistor RT (k) Triangular wave upper and lower limit voltage vs. timing capacitor
3.4 3.2 3.0 2.8 2.6 2.4 2.2 2.0 1.8 1.6 10 100 1000 10000
Lower Upper
Timing capacitor CT (pF)
Triangular oscillator frequency vs. FB pin current Triangular oscillator frequency fOSC (kHz)
1000 800 600 400 200 0 -1200 -1000 -800 Ta = +25 C VCC = 18 V RT = 33 k CT = 220 pF
Triangular wave upper and lower limit voltage (V)
Ta = +25 C VCC = 18 V RT = 33 k
-600
-400
-200
0
Timing capacitor CT (pF)
FB pin current IFB (A)
Triangular oscillator frequency vs. ambient temperature Triangular oscillator frequency fOSC (kHz)
130 120 110 100 90 80 -50 -25 VCC = 18 V RT = 33 k CT = 220 pF
0
25
50
75
100
125
Ambient temperature Ta ( C)
(Continued)
9
MB3873
(Continued)
Soft start frequency vs. CS pin voltage
500
Dead time vs. dead time setting resistor
1400 1200 Ta = +25 C VCC = 18 V RT = 33 k CT = 220 pF
Soft start frequency fCS (kHz)
Dead time tDEAD (ns)
400 300 200 100 0 0.0
Ta = +25 C VCC = 18 V RT = 33 k CT = 220 pF
1000 800 600 400 200 0 0
0.5
1.0
1.5
2.0
50
100
150
200
250
300
CS pin voltage VCS (V)
Dead time setting resistor RD (k)
Power dissipation vs. ambient temperature
600
Power dissipation PD (mW)
540 500 400 300 200 100 0 -50 -25 0 25 50 75 100 125
Ambient temperature Ta ( C)
10
MB3873
s FUNCTIONAL DESCRIPTION
1. Switching Regulator Function
(1) Reference voltage circuit (Ref) The reference voltage circuit takes the voltage from the Vcc terminal (pin 11) and generates a temperaturecompensated reference voltage ( = 8V), which is used as the reference voltage supply for the IC internal circuit : bias and detection comparator. A reference voltage can be output from the VREF terminal (pin 10) at levels up to 10mA. (2) Triangular-wave oscillator circuit (OSC) This circuit is used to generate a triangular oscillator waveform, by connecting timing capacitor and resistor to the CT terminal (pin 2) and RT terminal (pin 1) respectively. The triangular waveform frequency fosc1 is set according to the timing capacitor and resistor. The triangular oscillator waveform is input to the IC's internal dead time timing circuit (One-Shot-DTC), and can be output from the CT terminal. (3) Oscillator frequency control circuit (OSC Control) The oscillator control circuit detects the AC/DC converter output voltage and outputs the PFM control signal to the triangular wave oscillator. The FB terminal (pin 5) carries the AC/DC converter output voltage at the V/I converted OSC control current. When an overload occurs, the detection signal to the overload detection circuit (OCP Comp.) is also output here. (4) Dead time timing circuit (One-Shot-DTC) The dead time timing circuit converts the triangular waveform generated by the triangular wave oscillator to a rectangular wave having a pulse width ( = dead time tDEAD) set by the dead time setup resistor that is connected to the RD terminal (pin 3). (5) Output circuit (Drive) The output circuit has totem pole configuration, and outputs the PFM signal from the OUT terminal (pin 8). The output circuit power is supplied from the Vcc (O) terminal (pin 9).
2. Protective Function
(1) Undervoltage lockout circuit (UVLO) Power-on surges and momentary drops in power supply voltage can cause errors in control IC operation, which can destroy or damage systems. To prevent the error operation, the UVLO Comp.1 circuit detects low voltage conditions in the supply voltage (Vcc), and sets the VREF terminal (pin 10) to "L" level. The UVLO Comp.2 circuit detects low voltage conditions in the reference voltage, and sets the OUT pin (pin 8) to "L" level. Overvoltage/overload/over temperature conditions cause the error detection latch (Latch) to be set. If the VREF terminal (pin 10) is set to "L" level, and the supply voltage falls below the UVLO circuit threshold voltage (VTHL), the UVLO Comp.1 resets the error detection latch. Operation is restored when the power supply voltage returns above the threshold voltage (VTHL) of the UVLO circuit. The threshold voltage can be set to any desired level by connecting resistor between the ENB terminal (pin 12) and GND terminal (pin 7), or between the ENB terminal (pin 12) and Vcc terminal (pin 11) (for internal resistance constants see "BLOCK DIAGRAM"). (2) Overvoltage detection comparator 1 (OVP Comp. 1) When the input voltage at the OVP terminal (pin 14) is greater than the threshold voltage (= 2.5V), the overvoltage : comparator 1 sets the error detection latch, and sets the VREF terminal (pin 10) and OUT terminal (pin 8) to "L" level. Note that if OVP Comp.1 is not used, the OVP terminal (pin 14) should be shorted to GND by the shortest path (see "PROCESSING WHEN OVP PIN IS NOT USED"). 11
MB3873
(3) Overvoltage detection comparator 2 (OVP Comp.2) When the input voltage at the +IN terminal (pin 15) is greater than the input voltage at the -IN terminal (pin 16), the CS terminal is set to "L" level causing the frequency to increase. When the +IN input voltage falls below the -IN input voltage, soft start processing is performed to restart operation. Overvoltage detection comparator 2 does not provide the same latch operation as OVP Comp.1. Note that if OVP Comp.2 is not used, the +IN terminal (pin 15) should be shorted to GND, and the -IN terminal (pin 16) should be connected to the VREF terminal (pin 10) by the shortest path (see "PROCESSING WHEN OVERVOLTAGE DETECTION COMPARATOR 2 IS NOT USED"). (4) Overload detection comparator circuit (OCP Comp.) When an overload occurs, the OCP Comp. circuit detects the overload signal output by the oscillator frequency control circuit, and after a given interval sets the error detection latch and sets the VREF terminal (pin 10) and OUT terminal (pin 8) to "L" level. The time interval from overload detection to setting of the error latch is determined by the delay interval setting capacitor connected to the CD terminal (pin 4). Note that if the overload detection function is not used, the CD terminal (pin 4) should be shorted to GND by the shortest path (see "PROCESSING WHEN THE CD PIN IS NOT USED"). (5) Overtemperature detection comparator (OTP Comp.) The over temperature detection comparator detects the input voltage at the OTP terminal (pin 13) and if greater than the threshold voltage ( = 0.98V) sets the error detection latch, and sets the VREF terminal (pin 10) and : OUT terminal (pin 8) to "L" level. Note that if the overtemperature detection function is not used, the OTP terminal (pin 13) should be shorted to GND by the shortest path (see "PROCESSING WHEN OTP PIN IS NOT USED").
3. Soft Start Function
Soft Start Circuit (CS) The MB3873 oscillator frequency control circuit includes an on-chip soft start circuit. Soft starting can be provided by connecting a capacitor to the CS terminal (pin 6). At start up, this causes the PFM control signal to be input to the triangular wave oscillator, thereby controlling the control frequency and preventing current rush. Note that if the soft start function is not used, the CS terminal (pin 6) should be left open. (See "PROCESSING WHEN CS PIN IS NOT USED.")
s SETTING THE OSCILLATOR FREQUENCY
The oscillator frequency is set by the timing capacitor CT and timing resistor RT connected to the CT pin and RT pin respectively. Oscillator frequency fOSC (when frequency control is not exerted by the FB, CS pins) 7.6 x 105 fOSC [kHz] = : CT [pF] x RT [k]
s SETTING THE DEAD TIME
The dead time is set by the dead time resistor RD connected to the RD pin. Dead time (output pin square wave pulse width) tDEAD [ns] = 4.8 x RD [k] - 44 : 12
MB3873
s SETTING THE SOFT START TIME
When the MB3873 is started, the soft start capacitor (Cs) connected to the CS terminal begins charging. While the CS terminal voltage is = 0 to 1.1V, the oscillator frequency is controlled by the CS terminal voltage, thereby : controlling the output voltage. The soft start capacitor charging current is as follows ICS1 = 25 A (CS pin voltage = 0 to 1.1V) : : ICS2 = 2.5 A (CS pin voltage = 1.1 to 3.1V (CS pin clamp voltage)) : : Soft start time (time until CS pin voltage reaches 1.1V) 1.2 x CS [F] tCS [s] = : 25 [A]
s SETTNG THE OVERLOAD DETECTION DELAY TIME
When an overload condition is detected, the delay capacitor (CD) connected to the CD terminal starts charging ( = 10 A), increasing the CD terminal voltage. : When the CD terminal voltage exceeds the threshold voltage ( = 4V), the error detection latch is set, and the : VREF terminal (pin 10) and OUT terminal (pin 8) are set to "L" level. Overload detection delay time (time from overload detection until error latch is set) 3.9 x CD [F] tCS [s] = : 10 [A]
13
MB3873
s OVERVOLTAGE DETECTION COMPARATOR 2 EQUIVALENT CIRCUIT
+IN 15 CS + - OVP Comp. 2
-IN 16
s PROCESSING WHEN OVERVOLTAGE DETECTION COMPARATOR 2 IS NOT USED
When the overvoltage detection comparator 2 is not used, the +IN terminal (pin 15) should be shorted to GND by the shortest possible path, and the -IN terminal (pin 16) should be connected to the VREF terminal (pin 10) by the shortest possible path.
-IN +IN
16 15
VREF
10
When overvoltage detection comparator 2 is not used
14
MB3873
s PROCESSING WHEN CD PIN IS NOT USED
When the overload detection function is not used, the CD terminal (pin 4) should be shorted to GND by the shortest possible path.
4
CD
When CD pin is not used
s PROCESSING WHEN OTP PIN IS NOT USED
When the over temperature detection function is not used, the OTP terminal (pin 13) should be shorted to GND by the shortest possible path.
OTP
13
When OTP pin is not used
15
MB3873
s PROCESSING WHEN OVP PIN IS NOT USED
When the overvoltage detection function is not used, the OVP terminal (pin 14) should be shorted to GND by the shortest possible path.
OVP 14
When OVP pin is not used
s PROCESSING WHEN CS PIN IS NOT USED
When the soft start function is not used, the CS terminal (pin 6) should be left open.
"Open"
6 CS
When the soft start time is not set
16
MB3873
s PROCESSING WHEN ENB PIN IS NOT USED
When not connecting a specified resistance to the UVLO Comp.1, the ENB terminal (pin 12) should be left open.
"Open"
ENB 6
When ENB pin is not used
17
+
2.5 k 33 k 120 k 1000 pF 1000 pF 200 pF 0.22 F 0.1 F
1 k 0.039 F
1 F HA17431P 2 k
: Dielectric strength of zener diode
IR2116AiHIGH AND LOW SIDE DRIVER) : International Rectifier Corp. ECQU2A224MV : Matsushita Electronic Components Co., Ltd. D3SBA60 : SHINDENGEN ELECTRIC MANUFACTURING Co., Ltd. 2SK2543 : TOSHIBA CORPORATION 2SC3233 : TOSHIBA CORPORATION TLP521-1 : TOSHIBA CORPORATION YG805C04 : Fuji Electric Co.,Ltd. HA17431P : Hitachi, Ltd.
-
18
YG805C04 18 V 3 A 330 F 330 F
+ + - - +
D3SBA60
Vin 2SK2543 22 100 pF
2 6
-
0.22 F
1 5
MB3873
ECQU2A224MV
+ + - -
120 k
100 F 100 F
3 7
IR2116
0.1 F 2SC3233 2SK2543 22 0.022 F 20 V 4.7 k + 22 F 4 15 V -
8
8 VDD 9 IN 10 11 12 VSS 13 14 330 F 100 pF YG805C04 2 k 21 V
s APPLICATION EXAMPLE
HO 7 VB 6 VS 5 4 VCC 3 COM 2 LO 1
1 k TLP521-1
1 k
VCC (O)
+ -
VREF VCC ENB OTP OVP +IN -IN
16 15 14 13 12 11 10 9
MB3873
-
2.2 F
+
10 k
22 F
2 k TLP521-1 1000 pF 3 k
12 k
12345678
OUT GND CS FB CD RD CT RT
680
MB3873
s REFERENCE DATA
Output voltage vs. input voltage (Output voltage = 18 V)
18.2 OUT = 3 A RT = 33 k CT = 220 pF Vin frequency = 50 Hz
Output voltage vs. load current (Output voltage = 18 V)
18.2 Vin = AC100 V (50 Hz) RT = 33 k CT = 220 pF
Output voltage VO (V)
18.1
Output voltage VO (V)
18.1
18.0
18.0
17.9
17.9
17.8 0 50 100 150 200 250 300
17.8 0 0.5 1 1.5 2 2.5 3 3.5
Input voltage Vin (V)
Load current IO (A)
Conversion efficiency vs. input voltage (Output voltage = 18 V) Conversion efficiency (%) Conversion efficiency (%)
100 90 80 70 60 50 0 50 100 150 200 250 300 OUT = 3 A RT = 33 k CT = 220 pF Vin frequency = 50 Hz 100 90 80 70 60 50 0
Conversion efficiency vs. load current (Output voltage = 18 V)
Vin = AC100 V (50 Hz) RT = 33 k CT = 220 pF
Input voltage Vin (V)
0.5
1
1.5
2
2.5
3
3.5
Load current IO (A)
Control frequency vs. input voltage (Output voltage = 18 V)
300
Control frequency fOSC (kHz)
280 260 240 220 200 180 160 140 120 100 0 50 100 150 200
RT = 33 k CT = 220 pF
OUT = 0 A OUT = 3 A
250
300
Input voltage Vin (V)
19
MB3873
s USAGE PRECAUTIONS
1. Never use settings exceeding maximum rated conditions.
Exceeding maximum rated conditions may cause permanent damage to the LSI. Also, it is recommended that recommended operating conditions be observed in normal use. Exceeding recommended operating conditions may adversely affect LSI reliability.
2. Use this device within recommended operating conditions.
Recommended operating conditions are values within which normal LSI operation is warranted. Standard electrical characteristics are warranted within the range of recommended operating conditions and within the listed conditions for each parameter.
3. Printed circuit board ground lines should be set up with consideration for common impedance. 4. Take appropriate static electricity measures.
* * * * Containers for semiconductor materials should have anti-static protection or be made of conductive material. After mounting, printed circuit boards should be stored and shipped in conductive bags or containers. Work platforms, tools, and instruments should be properly grounded. Working personnel should be grounded with resistance of 250 k to 1 M between body and ground.
s ORDERING INFORMATION
Part number MB3873PF Package 16-pin plastic SOP (FPT-16P-M06) Remarks
20
MB3873
s PACKAGE DIMENSION
16-pin Plastic SOP (FPT-16P-M06)
2.25(.089)MAX (Mounting height) 0.05(.002)MIN (STAND OFF)
10.15 -0.20 .400 -.008
+0.25
+.010
INDEX
5.300.30 (.209.012) "B"
7.800.40 (.307.016)
6.80 -0.20 .268 -.008
+0.40 +.016
1.27(.050) TYP
0.450.10 (.018.004)
O0.13(.005)
M
0.15 -0.02 .006 -.001 Details of "A" part 0.40(.016)
+0.05 +.002
0.500.20 (.020.008)
Details of "B" part 0.15(.006) 0.20(.008)
"A" 0.10(.004) 8.89(.350)REF
0.20(.008) 0.18(.007)MAX 0.68(.027)MAX 0.18(.007)MAX 0.68(.027)MAX
C
1994 FUJITSU LIMITED F16015S-2C-4
Dimension in mm (inches)
21
MB3873
FUJITSU LIMITED
For further information please contact:
Japan FUJITSU LIMITED Corporate Global Business Support Division Electronic Devices KAWASAKI PLANT, 4-1-1, Kamikodanaka Nakahara-ku, Kawasaki-shi Kanagawa 211-8588, Japan Tel: 81(44) 754-3763 Fax: 81(44) 754-3329
All Rights Reserved. The contents of this document are subject to change without notice. Customers are advised to consult with FUJITSU sales representatives before ordering. The information and circuit diagrams in this document are presented as examples of semiconductor device applications, and are not intended to be incorporated in devices for actual use. Also, FUJITSU is unable to assume responsibility for infringement of any patent rights or other rights of third parties arising from the use of this information or circuit diagrams. FUJITSU semiconductor devices are intended for use in standard applications (computers, office automation and other office equipment, industrial, communications, and measurement equipment, personal or household devices, etc.). CAUTION: Customers considering the use of our products in special applications where failure or abnormal operation may directly affect human lives or cause physical injury or property damage, or where extremely high levels of reliability are demanded (such as aerospace systems, atomic energy controls, sea floor repeaters, vehicle operating controls, medical devices for life support, etc.) are requested to consult with FUJITSU sales representatives before such use. The company will not be responsible for damages arising from such use without prior approval. Any semiconductor devices have an inherent chance of failure. You must protect against injury, damage or loss from such failures by incorporating safety design measures into your facility and equipment such as redundancy, fire protection, and prevention of over-current levels and other abnormal operating conditions. If any products described in this document represent goods or technologies subject to certain restrictions on export under the Foreign Exchange and Foreign Trade Law of Japan, the prior authorization by Japanese government will be required for export of those products from Japan.
http://www.fujitsu.co.jp/
North and South America FUJITSU MICROELECTRONICS, INC. Semiconductor Division 3545 North First Street San Jose, CA 95134-1804, USA Tel: (408) 922-9000 Fax: (408) 922-9179 Customer Response Center Mon. - Fri.: 7 am - 5 pm (PST) Tel: (800) 866-8608 Fax: (408) 922-9179
http://www.fujitsumicro.com/
Europe FUJITSU MIKROELEKTRONIK GmbH Am Siebenstein 6-10 D-63303 Dreieich-Buchschlag Germany Tel: (06103) 690-0 Fax: (06103) 690-122
http://www.fujitsu-ede.com/
Asia Pacific FUJITSU MICROELECTRONICS ASIA PTE LTD #05-08, 151 Lorong Chuan New Tech Park Singapore 556741 Tel: (65) 281-0770 Fax: (65) 281-0220
http://www.fmap.com.sg/
F9906 (c) FUJITSU LIMITED Printed in Japan

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