描述 Description

The AP1506 series are monolithic IC designed for a step down DC/DC converter, and own the ability of driving a 3A load without 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 come into standby mode. The internal compensation makes feedback control have good line and load regulation without external design. Regarding protected function, thermal shutdown is to prevent over temperature operating from damage, and current limit is to prevent over current operating of the output switch.

特性 Features

? Output Voltage: 3.3V, 5V, 12V and Adjustable Output Version

? Adjustable Version Output Voltage Range, 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 can be up to 22V

? Output Load Current: 3A

? Lead Free packages: TO263-5L and TO220-5L(R)

? TO263-5L and TO220-5L(R): Available in “Green”

Molding Compound (No Br, Sb)

? Low Power standby mode

? Built-in Switching Transistor On Chip

? Lead Free Finish/RoHS Compliant (Note 1)

Applications

? Simple High-Efficiency Step-Down Regulator

? On-Card Switching Regulators

? Positive to Negative Converter