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AP3503 - 340kHZ 3A SYNCHRONOUS DC-DC BUCK CONVERTER

Datasheet Summary

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.

Features

  • Input Voltage Range: 4.5V to 18V.
  • Fixed 340kHz Frequency.
  • High Efficiency: up to 95%.
  • Output Current: 3A.
  • Current Mode Control.
  • Built-In Over Current Protection.
  • Built-In Thermal Shutdown Function.
  • Built-In UVLO Function.
  • Built-In Over Voltage Protection.
  • Programmable Soft-start.

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Datasheet preview – AP3503

Datasheet Details

Part number AP3503
Manufacturer DIODES
File Size 421.51 KB
Description 340kHZ 3A SYNCHRONOUS DC-DC BUCK CONVERTER
Datasheet download datasheet AP3503 Datasheet
Additional preview pages of the AP3503 datasheet.

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Full PDF Text Transcription

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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.
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