AP62400

Description

The AP62400 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 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 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 is available in TSOT26 package.

Feature(s)

• VIN: 4.2V to 18V
• Output Voltage (VOUT): 0.8V to 7V
• 4A Continuous Output Current
• 8V ± 1% Reference Voltage (TA = +25°C)
• 190μA Low Quiescent Current (Pulse Frequency Modulation)
• 800kHz Switching Frequency (VIN = 12V, VOUT = 5V)
• 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 (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)
• For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/

Application(s)

• 5V and 12V distributed power bus supplies
• Flat screen TV sets and monitors
• White goods and small home appliances
• FPGA, DSP, and ASIC supplies
• Home audio
• Network systems
• Gaming consoles
• Consumer electronics
• General-purpose point of loads