AP63357DV-7

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 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. AP63356/AP63357 also 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.
The device is available in a 3mm × 2mm V-DFN3020-13 package.

Category: Power Management (PMIC)

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SPECIFICATION

 VIN 3.8V to 32V
 3.5A Continuous Output Current
 0.8V ± 1% Reference Voltage
 22µA Low Quiescent Current (Pulse Frequency Modulation)
 450kHz Switching Frequency
 Pulse Width Modulation (PWM) Regardless of Output Load
o AP63356
 Supports Pulse Frequency Modulation (PFM)
o AP63357
o 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
o Undervoltage Lockout (UVLO)
o Output Undervoltage Protection (UVP)
o Cycle-by-Cycle Peak Current Limit
o Thermal Shutdown
 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
 Halogen and Antimony Free. “Green” Device (Note 3)