Diodes Incorporated AP62401 | Demoboard AP62401WT8-EVM

Description

The AP62400/AP62401 is a 4A, synchronous buck converter with a wide input voltage range of 4.2V to 18V. The device fully integrates a 50mΩ high-side power MOSFET and a 22mΩ low-side power MOSFET to provide high-efficiency step-down DC-DC conversion. The AP62400/AP62401 device is easily used by minimizing the external component count due to its adoption of Constant On-Time (COT) control to achieve fast transient response, easy loop stabilization, and low output voltage ripple. The AP62400/AP62401 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. AP62400/AP62401 is available in TSOT26 and TSOT28 (Type TH) packages.

Features

• VIN Range: 4.2V -18V
• Output Voltage range: 0.8V to 7V
• 4A Continuous Output Current
• 0.8V ± 1% Reference Voltage (AP62400 and AP62401)
• 0.765V ± 1% Reference Voltage => AP62400T
• 190μA Low Quiescent Current
• 800kHz Switching Frequency
• Up to 83% Efficiency at 5mA Light Load
• Proprietary Gate Driver Design for Best EMI Reduction
• Protection Circuitry
• Undervoltage Lockout (UVLO)
• Cycle-by-Cycle Valley Current Limit
• Thermal Shutdown
• Totally Lead-Free & Fully RoHS Compliant
• Halogen and Antimony Free. “Green” Device

Typical applications

• Network Systems
• 5V and 12V Distributed Power Bus Supplies / FPGA, DSP, and ASIC Supplies /General Purpose Point of Load
• Flat Screen TV Sets and Monitors / White Goods and Small Home Appliances / Home Audio / Gaming / Consumer Electronics Consoles