AP1509 - Diodes Incorporated

AP1509 2A PWM BUCK DC/DC CONVERTER

The AP1509 series are monolithic ICs designed for a step-down DC-DC converter and have the ability of driving a 2A load without an additional transistor, which saves board space. Pin Assignments (Top View) The external shutdown function can be controlled by logic level and then go into standby mode. The internal compensation makes feedback control have goo.

Features

include a guaranteed +4% tolerance on output voltage under specified input voltage and output load conditions, and +15% on the oscillator frequency. The output version included fixed 3.3V, 5V, 12V, and an adjustable type. The chips are available in a standard 8-lead SO-8 package. Features
• Output Voltage: 3.3V, 5V, 12V, and Adjustable Output Version
• Adjustable Version Output Voltage Range of 1.23V to 18V+4%
• 150kHz +15% Fixed Switching Frequency
• Voltage Mode Non-Synchronous PWM Control
• Thermal-Shutdown and Current-Limit Protection
• ON/OFF Shutdown Control Input
• Operating Voltage up.