Diodes Incorporated AP1507-D5-13

Description
The AP1507 is a monolithic IC designed for a step-down DC/DC converter and is capable of driving a 3A load without an external transistor. Due to reducing the number of external components, the board space can be saved easily. The external shutdown function can be controlled by logic level and then go into standby mode. The internal compensation makes the feedback control have good line and load regulation without an external design. Regarding the protected function, the thermal shutdown prevents overtemperature operation from damaging the device, and current limit protects against overcurrent operation of the output switch. If the current limit function occurs, and VFB is down to 0.5V below, the switching frequency reduces.
The AP1507 series operates at a switching frequency of 150kHz, which allows smaller-sized filter components than the requirements with lower frequency switching regulators. Other 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 a fixed 3.3V, 5V, 12V, and an adjustable type.

Features
Output Voltage: 3.3V, 5V, 12V, and Adjustable Output Version
150kHz ±15% Fixed Switching Frequency
Voltage Mode Non-Synchronous PWM Control
ON/OFF Shutdown Control Input
Operating Voltage up to 22V
Output Load Current: 3A
Low Power Standby Mode
Built-in Switching Transistor On Chip
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. "Green" Device (Note 3)

Applications
Simple High Efficiency Step-Down Regulator
Positive to Negative Converter