■ 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.

■ 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)

■ Applications

• Switching power supply for general equipment

■ Characteristic curves (Ta = 25°C)

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