AP63357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 AP63356/AP63357 is a 3.5A, synchronous buck converter with a wide input voltage range of 3.8V to 32V. The device fully integrates a 74mΩ high-side power MOSFET and a 40mΩ low-side power MOSFET to provide high-efficiency step-down DC-DC conversion.

The AP63356/AP63357 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. 

The AP63356/AP63357 design is optimized for Electromagnetic Interference (EMI) reduction. The converter 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. It also 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.

The device is available in a 3mm × 2mm V-DFN3020-13 package.

特性 Features

•VIN 3.8V to 32V
•3.5A Continuous Output Current
•0.8V ± 1% Reference Voltage
•22μA Ultralow Quiescent Current (Pulse Frequency Modulation)
•450kHz Switching Frequency
•Pulse Width Modulation (PWM) Regardless of Output Load
•AP63356
•Supports Pulse Frequency Modulation (PFM)
•AP63357
•Up to 86% Efficiency at 5mA Light Load
•Proprietary Gate Driver Design for Best EMI Reduction
•Frequency Spread Spectrum (FSS) to Reduce EMI
•Low-Dropout (LDO) Mode
•Power Good Indicator with 5MΩ Internal Pull-up
•Precision Enable Threshold to Adjust UVLO
•Protection Circuitry
•Undervoltage Lockout (UVLO)
•Output Undervoltage Protection (UVP)
•Cycle-by-Cycle Peak Current Limit
•Thermal Shutdown
•Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
•Halogen and Antimony Free. “Green” Device (Note 3)

应用 Application

• 12V and 24V Distributed Power Bus Supplies

• Flat Screen TV Sets and Monitors

• Power Tools and Laser Printers

• White Goods and Small Home Appliances

• FPGA, DSP, and ASIC Supplies

• Home Audio

• Network Systems

• Set Top Boxes

• Gaming Consoles

• Consumer Electronics