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FA5314PS Dataheets PDF



Part Number FA5314PS
Manufacturers Fuji Electric
Logo Fuji Electric
Description Bipolar IC For Switching Power Supply Control
Datasheet FA5314PS DatasheetFA5314PS Datasheet (PDF)

FA531X series series FA531X Bipolar IC For Switching Power Supply Control s Dimensions, mm SOP-8 8 5 FA5310BP(S), FA5314P(S), FA5316P(S) FA5311BP(S), FA5315P(S), FA5317P(S) s Description The FA531X series are bipolar ICs for switching power supply control that can drive a power MOSFET. These ICs contain many functions in a small 8-pin package. With these ICs, a high-performance and compact power supply can be created because not many external discrete components are needed. 1 6.05 4 +0.1 –0..

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FA531X series series FA531X Bipolar IC For Switching Power Supply Control s Dimensions, mm SOP-8 8 5 FA5310BP(S), FA5314P(S), FA5316P(S) FA5311BP(S), FA5315P(S), FA5317P(S) s Description The FA531X series are bipolar ICs for switching power supply control that can drive a power MOSFET. These ICs contain many functions in a small 8-pin package. With these ICs, a high-performance and compact power supply can be created because not many external discrete components are needed. 1 6.05 4 +0.1 –0.05 • Drive circuit for connecting a power MOSFET • Wide operating frequency range (5 to 600kHz) • Pulse-by-pulse overcurrent limiting function • Overload cutoff function (Latch or non-protection mode selectable) • Output ON/OFF control function by external signal • Overvoltage cutoff function in latch mode • Undervoltage malfunction prevention function • Low standby current (90µA typical) • Exclusive choices by circuits (See selection guide on page 25) • 8-pin package (DIP/SOP) ° 0~10 0.4±0.1 1.27±0.2 0.6 DIP-8 8 5 s Applications • Switching power supply for general equipment 1 9.3 1.5 4 6.5 3.0min 4.5max 3.4 0.3 7.6 s Block diagram FA5310BP(S)/FA5311BP(S)/FA5316P(S)/FA5317P(S) 2.54±0.25 0.5±0.1 0~15 ˚ 0~1 5˚ Pin No. 1 2 3 4 5 6 7 8 Pin symbol Description Oscillator timing resistor Feedback Overcurrent (+) detection Ground Output Power supply Oscillator timing capacitor Soft-start and ON/OFF control RT FB IS (+) GND OUT VCC CT CS FA5314P(S)/FA5315P(S) Pin No. 1 2 3 4 5 6 7 8 Pin symbol Description Oscillator timing resistor Feedback Overcurrent (–) detection Ground Output Power supply Oscillator timing capacitor Soft-start and ON/OFF control RT FB IS (–) GND OUT VCC CT CS 1 2.0max +0.1 5 –0.0 0.20 s Features 8.2±0.3 5.3 FA531X series s Selection guide Type FA5310BP(S) FA5311BP(S) FA5314P(S) FA5315P(S) FA5316P(S) FA5317P(S) Max. duty cycle (typ.) 46% 70% 46% 70% 46% 70% UVLO (typ.) Polarity of overcurrent detection ON threshold OFF threshold + + – – + + 16.0V 16.0V 15.5V 15.5V 15.5V 15.5V 8.70V 8.70V 8.40V 8.40V 8.40V 8.40V Max. output current 1.5A 1.5A 1.5A 1.5A 1.0A 1.0A Application Forward type Flyback type Forward type Flyback type Forward type Flyback type s Absolute maximum ratings Item Supply voltage Output current FA5310/11/14/15 FA5316/17 Feedback terminal input voltage Overcurrent detection terminal input voltage CS terminal input current Total power dissipation (Ta=25 °C) Operating temperature Junction temperature Storage temperature Symbol Rating 31 ±1.5 ±1.0 4 –0.3 to +4 2 800 (DIP-8) –30 to +85 125 –40 to +150 *1 550 (SOP-8) *2 Unit V A V V mA mW °C °C °C s Recommended operating conditions Item Supply voltage Oscillator timing resistance FA5310/11 FA5314/15/16/17 Soft-start capacitor Oscillation frequency Symbol Min. 10 3.3 1 0.1 5 Max. 30 10 10 1 600 Unit V kΩ VCC IO VFB VIS ICS Pd Topr Tj Tstg VCC RT CS fOSC µF kHz Notes: * 1 Derating factor Ta > 25° C : 8.0mW/°C (on PC board ) * 2 Derating factor Ta > 25° C : 5.5mW/°C (on PC board ) s Electrical characteristics (Ta=25°C, Vcc=18V, fOSC=135kHz) Oscillator section Item Oscillation frequency Frequency variation 1 (due to supply voltage change) Frequency variation 1 (due to temperature change) Symbol Test condition Min. 125 Typ. 135 ±1 ±1.5 Max. 145 Unit kHz % % fOSC fdV fdr RT=5.1kΩ , CT=360pF VCC=10 to 30V Ta=–30 to +85° C Pulse width modulation circuit section Item Feedback terminal source current Input threshold voltage (Pin 2) Symbol Test condition FA5310/14/16 Min. Typ. 0.75 1.80 43 46 49 66 FA5311/15/17 Max. Min. Typ. 0.75 2.30 70 74 Max. V V % Unit IFB VTH FBO VTH FBM DMAX VFB=0 Duty cycle =0% Duty cycle =DMAX –660 –800 –960 –660 –800 –960 µA Maximum duty cycle Soft-start circuit section Item Charge current (Pin 8) Input threshold voltage (Pin 8) Symbol Test condition Pin 8=0V Duty cycle =0% Duty cycle =DMAX FA5310/14/16 Min. Typ. –10 0.90 1.90 –15 –5 FA5311/15/17 Max. Min. –15 Typ. –10 0.90 2.30 Max. –5 µA V V Unit ICHG VTH CSO VTH CSM 2 FA531X series Overcurrent limiting circuit section Item Input threshold voltage (Pin 3) Overcurrent detection terminal source current Delay time Symbol Test condition FA5310/11/16/17 Min. Typ. 0.24 0.21 Pin 3=0V 0.27 FA5314/15 Typ. Max. µA ns Unit Max. Min. VTH IS IIS TPD IS –0.21 –0.17 –0.14 V –300 –200 –100 –240 –160 –80 150 200 Latch-mode cutoff circuit section Item CS terminal sink current Cutoff threshold voltage (Pin 8) Symbol Test condition Pin 8=6V, Pin 2=1V Min. 25 6.5 Typ. 45 7.0 Max. 65 7.5 Unit µA V ISINK CS VTH CS Overload cutoff circuit section Item Cutoff-start voltage (Pin 2) Symbol Test condition Min. 2.6 Typ. 2.8 Max. 3.1 Unit V VTH FB Undervoltage lockout circuit section Item OFF-to-ON threshold voltage ON-to-OFF threshold voltage Symbol Test condition FA5310/11 Min. Typ. 16.0 8.70 15.5 8.20 16.5 9.20 FA5314/15/16/17 Max. Min. 14.8 7.70 Typ. 15.5 8.40 Max. 16.2 9.10 V V Unit VCC ON VCC OFF Output section Item Symbol Test condition FA5.


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