AP65452SP-13

NOT RECOMMENDED FOR NEW DESIGN USE AP65450 AP65452 4A, 18V, 650kHz ADAPTIVE COT STEP-DOWN CONVERTER Description Pin Assignments ADVANCED INFORMATION The AP65452 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. ( Top View ) 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 AP65452 features programmable soft-start, UVLO, OTP and OCP to protect the circuit. EN 1 8 VIN FB 2 7 BS VREG5 3 6 SW SS 4 5 GND SO-8EP This IC is available in SO-8EP package. Features Applications                        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 4A Continuous Output Current 650kHz Switching Frequency Built-in Over Current Limit Built-in Thermal Shutdown Protection Programmable Soft-Start Pre-biased Start-up Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) Notes: Gaming Consoles Flat Screen TV Sets and Monitors Set-Top Boxes Distributed Power Systems Home Audio Consumer Electronics Network Systems FPGA, DSP and ASIC Supplies Green Electronics 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain