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AP3503
340kHZ 3A SYNCHRONOUS DC-DC BUCK CONVERTER
Description
The AP3503 is a 340kHz fixed frequency, current mode, PWM synchronous buck (step-down) DC-DC converter, capable of driving a 3A load with high efficiency, excellent line and load regulation. The device integrates N-channel power MOSFET switches with low onresistance. Current mode control provides fast transient response and cycle-by-cycle current limit.
The AP3503 employs complete protection to ensure system security. Including output Over Voltage Protection, input Under Voltage LockOut, programmable soft-start, Over Temperature Protection to safeguard the circuit.
This IC is available in PSOP-8 package.
Pin Assignments
(Top View)
BS 1 IN 2 SW 3 GND 4
8 SS
7 EN EP
6 COMP 5 FB
PSOP-8
Features
Input Voltage Range: 4.