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FA5304APS Dataheets PDF



Part Number FA5304APS
Manufacturers Fuji Electric
Logo Fuji Electric
Description Bipolar IC For Switching Power Supply Control
Datasheet FA5304APS DatasheetFA5304APS Datasheet (PDF)

FA5304AP(S)/FA5305AP(S) s Description The FA5304AP(S) and FA5305AP(S) are bipolar ICs for switching power supply control and can directly drive a power MOSFET. These ICs contain many functions in a small 8-pin package. With these ICs, a high-performance power supply can be created compactly because not many external components are needed. Bipolar IC For Switching Power Supply Control FA5304AP(S)/FA5305AP(S) s Dimensions, mm SOP-8 8 5 s Features • Drive circuit for connecting a power MOS-FET (.

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FA5304AP(S)/FA5305AP(S) s Description The FA5304AP(S) and FA5305AP(S) are bipolar ICs for switching power supply control and can directly drive a power MOSFET. These ICs contain many functions in a small 8-pin package. With these ICs, a high-performance power supply can be created compactly because not many external components are needed. Bipolar IC For Switching Power Supply Control FA5304AP(S)/FA5305AP(S) s Dimensions, mm SOP-8 8 5 s Features • Drive circuit for connecting a power MOS-FET (IO = ±1.5A) • Wide operating frequency range (5 to 600kHz) • Pulse-by-pulse overcurrent limiting function Positive voltage detection: FA5304AP(S) Negative voltage detection: FA5305AP(S) • Overload cutoff function (Latch or non-protection mode selectable) • Output ON/OFF control function by external signals • Overvoltage cutoff function in latch mode • Undervoltage malfunction prevention function (ON at 16V and OFF at 8.7V) • Error amplifier for control by tertiary winding detection • Low standby current (90µA typ.) • 8-pin package (DIP/SOP) 1 6.05 4 +0.1 –0.05 8.2±0.3 5.3 ° 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 2.54±0.25 0.5±0.1 0~15 ˚ 0~1 5˚ 2.0max +0.1 5 –0.0 0.20 1 FA5304AP(S)/FA5305AP(S) s Block diagram FA5304AP(S) Pin No. 1 2 3 4 5 6 7 8 Pin symbol Description Inverting input to error amplifier Error amplifier output Overcurrent (+) detection Ground Output Power supply Oscillator timing capacitor Soft-start and ON/OFF control IN (–) FB IS (+) GND OUT VCC CT CS FA5305AP(S) Pin No. 1 2 3 4 5 6 7 8 Pin symbol Description Inverting input to error amplifier Error amplifier output Overcurrent (–) detection Ground Output Power supply Oscillator timing capacitor Soft-start and ON/OFF control IN (–) FB IS (–) GND OUT VCC CT CS 2 FA5304AP(S)/FA5305AP(S) s Absolute maximum ratings Common to FA5304AP(S) and FA5305AP(S) Item Supply voltage Output current Error amplifier input voltage Feedback terminal input voltage Overcurrent detection terminal input voltage CS terminal input current Total power dissipation (Ta = 25° C) Operating temperature Storage temperature Symbol Rating 30 ±1.5 4 4 –0.3 to +4 2 800 (DIP-8) *1 550 (SOP-8) *2 –30 to +85 –40 to +150 Unit V A V V V mA mW °C °C 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 Recommended operating conditions Common to FA5304AP(S) and FA5305AP(S) Item Supply voltage Symbol Min. 10 100 0.1 5 1 600 Max. 30 Unit V kΩ VCC IO VIN VFB VIS ICS Pd Topr Tstg VCC Error amplifier feedback resistor RNF Soft-start capacitor CS Oscillation frequency fOSC µF kHz 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 2 (due to temperature change) Common to FA5304AP(S) and FA5305AP(S) Symbol Test condition Min. 112 Typ. 135 ±1 ±4 Max. 148 Unit kHz % % fOSC fdv fdT CT = 360pF VCC = 10 to 30V Ta = –30 to +85°C Error amplifier section Item Reference voltage Input bias current Open-loop voltage gain Unity-gain bandwidth Maximum output voltage (Pin 2) Output source current (Pin 2) Common to FA5304AP(S) and FA5305AP(S)) Symbol Test condition Min. 1.90 –500 80 1.0 Typ. 2.00 –50 Max. 2.10 Unit V nA dB MHz V 200 –100 –50 mV VB IB AV fT VOM+ VOM– IMO+ V1 = 2V RNF = 100kΩ RNF = 100kΩ VOM = 1V 2.70 µA Pulse width modulation circuit section Item Input threshold voltage (Pin 2) Maximum duty cycle Common to FA5304AP(S) and FA5305AP(S) Symbol Test condition Duty cycle = 0% Duty cycle = DMAX Min. 0.80 1.70 42 Typ. 1.00 1.90 45 Max. 1.20 2.10 50 Unit V V % VTH FBO VTH FBM DMAX Soft-start circuit section Item Charge current (Pin 8) Input threshold voltage (Pin 8) Common to FA5304AP(S) and FA5305AP(S) Symbol Test condition Pin 8 = 0V Duty cycle = 0% Duty cycle = DMAX Min. –15 0.80 1.70 Typ. –10 1.00 1.90 Max. –5 1.20 2.10 Unit ICHG VTH CSO VTH CSM µA V V 3 FA5304AP(S)/FA5305AP(S) Overcurrent limiting circuit section Item Input threshold voltage (Pin 3) Overcurrent detection terminal source current Delay time Symbol Test condition FA5304AP(S) Min. Typ. 0.24 150 0.20 Pin 3 = 0V 0.28 FA5305AP(S) Max. Min. Typ. Max. Unit VTH IS IIS TPD IS –0.20 –0.17 –0.14 V –300 –200 –100 –240 –160 –80 200 µA ns Latch-mode cutoff circuit section Item CS terminal sink current Cutoff threshold voltage (Pin 8) Common to FA5304AP(S) and FA5305AP(S) Symbol Test condition Pin 8 = 6V, Pin 2 = 1V Min. 40 6.5 Typ. 70 7.0 Max. 150 7.5 Unit ISINK CS VTH CS µA V Overload cutoff circuit section Item Cutoff threshold voltage (Pin 2) Common to FA5304AP(S) and FA5305AP(S) Symbol Test condition Min. 2.5 Typ. 2.7 Max. 2.9 Unit V VTH FB Undervoltage lock-out circuit section Common to FA5304AP(S) and FA5305AP(S) Item OFF-to-ON threshold voltage ON-to-OFF threshold voltage Voltage h.


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