AP65352 (Not Recommended for new design)

Description

The AP65352 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 AP65352 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.

Feature(s)

• 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

Application(s)

• Point of Load Power