AP64352SP-13

AP64352 3.8V TO 40V INPUT, 3.5A LOW IQ SYNCHRONOUS BUCK WITH INTERNAL COMPENSATION Description Pin Assignments The AP64352 is a 3.5A, synchronous buck converter with a wide input voltage range of 3.8V to 40V. The device fully integrates a 75mΩ highside power MOSFET and a 45mΩ low-side power MOSFET to provide high-efficiency step-down DC-DC conversion. TOP VIEW The AP64352 device is easily used by minimizing the external component count due to its adoption of peak current mode control along with its integrated loop compensation network. BST 1 VIN 2 7 GND EN 3 6 SS RT/CLK 4 5 FB SO-8EP The device is available in an SO-8EP package. Features Applications                     VIN 3.8V to 40V 3.5A Continuous Output Current 0.8V ± 1% Reference Voltage 22µA Low Quiescent Current (Pulse Frequency Modulation) Programmable Switching Frequency: 100kHz to 2.2MHz External Clock Synchronization: 100kHz to 2.2MHz Programmable Soft-Start Time Up to 85% Efficiency at 5mA Light Load Proprietary Gate Driver Design for Best EMI Reduction Frequency Spread Spectrum (FSS) to Reduce EMI Low-Dropout (LDO) Mode Precision Enable Threshold to Adjust UVLO Protection Circuitry o Undervoltage Lockout (UVLO) o Output Overvoltage Protection (OVP) o Cycle-by-Cycle Peak Current Limit o Thermal Shutdown Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) Notes: SW EXPOSED PAD 9 The AP64352 design is optimized for Electromagnetic Interference (EMI) reduction. The device has a proprietary gate driver scheme to resist switching node ringing without sacrificing MOSFET turn-on and turn-off times, which reduces high-frequency radiated EMI noise caused by MOSFET switching. AP64352 also features Frequency Spread Spectrum (FSS) with a switching frequency jitter of ±6%, which reduces EMI by not allowing emitted energy to stay in any one frequency for a significant period of time.   8 5V, 12V, and 24V Distributed Power Bus Supplies Power Tools and Laser Printers White Goods and Small Home Appliances Home Audio Network Systems Consumer Electronics General Purpose Point of Load 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See https://www.diodes.com/quality/lead-free/ 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