Diodes Incorporated AP62800 Buck Converter

Diodes Incorporated AP62800 Buck Converter offers a 4.5V to 17V wide input voltage range with an 8A current. The AP62800 fully integrates a 22mΩ high-side power MOSFET and a 10mΩ low-side power MOSFET to allow high-efficiency step-down DC-DC conversion. The converter is easily used by minimizing the external component count via Constant On-Time (COT) control to achieve fast transient response, easy loop stabilization, and low output voltage ripple.

The Diodes AP62800 Buck Converter 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.

The AP62800 is housed in a V-QFN2030-12 (Type A) package.

Features

4.5V to 17V V_IN
Output Voltage (V_OUT) of 0.6V to 7V
8A Continuous output current
0.6V ±1% Reference voltage
195μA Quiescent current
Selectable switching frequency of 400kHz, 800kHz, or 1.2MHz
Selectable operation modes
- Pulse Frequency Modulation (PFM)
- Ultrasonic Mode (USM)
- Pulse Width Modulation (PWM)

Programmable soft-start time
Proprietary gate driver design for best EMI reduction
Power-good indicator with 5MΩ internal pull-up resistor
Precision enable threshold to adjust UVLO
Protection circuitry
- Undervoltage Lockout (UVLO)
- Cycle-by-Cycle valley current limit
- Thermal shutdown
Totally lead-free and fully RoHS compliant
Halogen and antimony-free, “Green” device

Applications

5V and 12V Distributed power bus supplies
Television 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 Load

Diodes Incorporated AP62800 Buck Converter

Features

Applications

Typical Application Circuit

Efficiency vs. Output Current Graphs

Functional Block Diagram

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