AP65353数据手册集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF

描述 Description

The AP65353 is an adaptive constant on-time mode synchronous buck converter providing high efficiency, excellent transient response and high DC output accuracy for low-voltage regulation in digital TV and monitor.
The constant-on-time control scheme handles wide input/output voltage ratios and provides low external component count. The internal proprietary circuit enables the device to adopt both low equivalent series resistance (ESR) output capacitors, such as SP-CAP or POSCAP and ultra-low ESR ceramic capacitors.
The AP65353 features programmable soft-start, UVLO, OTP, high voltage tolerance EN pin and OCP to protect the circuit.
This IC is available in SO-8EP package.

特性 Features

Fixed Frequency Emulated Constant On-Time Control
Good Stability Independent of the Output Capacitor ESR
Fast Load Transient Response
Synchronous Rectification: 90mΩ Internal High-Side Switch and 57mΩ Internal Low-Side Switch
Wide Input Voltage Range: 4.5V to 18V
Output Voltage Range: 0.76V to 6V
3A Continuous Output Current
650kHz Switching Frequency
Built-In Over Current Limit
High Voltage Tolerance EN Pin
Built-in Thermal Shutdown Protection
Programmable Soft-Start
Pre-Biased Start-Up

应用 Application

Point of Load power
STB
LCD-TV
Coffee Machines
Power Supplies
Monitors
Communications