AP65552 Datasheet | Diodes Incorporated

5A, 18V, 650k Hz ADAPTIVE CCM/COT STEP-DOWN CONVERTER Description The AP65552 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 TVs and monitors. The constant-on-time control scheme handles wide input/output voltage ratios and provides low external ponent 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. Pin Assignments ( Top View ) EN 1 FB 2 VREG5 3 VIN BS SW The AP65552 Features programmable soft-start, UVLO, OTP and OCP to protect the circuit. This IC is available in SO-8EP package. SS 4 SO-8EP 5 GND Features - Fixed-Frequency Emulated Constant On-Time Control - Good Stability Independent of the Output Capacitor ESR - Fast Load Transient Response - Synchronous Rectification: 65mΩ Internal High-Side Switch and 36mΩ Internal Low-Side Switch - Wide Input Voltage Range: 4.5V to 18V - Output Voltage Range: 0.76V to 6V - 5A Continuous Output Current - 650k Hz Switching Frequency - Built-in Overcurrent Limit - Built-in Thermal Shutdown Protection - Programmable Soft-Start - Pre-biased Start-Up - Totally Lead-Free & Fully Ro HS pliant (Notes 1 &...