Diodes Incorporated AP62400 & AP62401 Synchronous Buck Converters

Diodes Incorporated AP62400 and AP62401 Synchronous Buck Converters feature a wide input voltage range of 4.2V to 18V. The Diodes Incorporated AP62400 and AP62401 feature integrated high- and low-side power MOSFETs (50mΩ and 22mΩ) for efficient DC-DC conversion. This device simplifies usage by minimizing external components through its Constant On-Time (COT) control, ensuring fast transient response, easy loop stabilization, and low output voltage ripple. The device is also designed for reduced Electromagnetic Interference (EMI), thanks to a proprietary gate driver scheme that mitigates high-frequency radiated EMI noise during MOSFET switching. The AP62400/AP62401 is available in a TSOT26 package.

Features

4.2V to 18V V_IN
0.8V to 7V output voltage (V_OUT)
4A continuous output current
0.8V ± 1% reference voltage (T_A = +25°C)
190μA low quiescent current Pulse Frequency Modulation (PFM)
800kHz switching frequency (V_IN = 12V, V_OUT = 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 and fully RoHS compliant
Halogen and antimony-free

Applications

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

Diodes Incorporated AP62400 & AP62401 Synchronous Buck Converters

Features

Applications

Typical Application Circuit

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