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AP62300Z6-7

DIOAP62300Z6-7

Diodes Incorporated
Buck Switching Regulator IC Positive Adjustable 0.8V 1 Output 3A SOT-563, SOT-666
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Overview

The AP62300Z6-7 is a 3A, synchronous buck converter featuring a wide input voltage range of 4.2V to 18V. It utilizes a Constant On-Time (COT) control scheme to provide fast transient response and simplify loop stabilization while maintaining a fixed 750kHz switching frequency. The device is housed in the extremely compact SOT-563 package, making it suitable for high-density power designs.

Why Choose This Part

This regulator features a proprietary gate driver design that significantly reduces switching noise and improves EMI performance without sacrificing efficiency. Its 155uA low quiescent current enhances light-load efficiency, while the integrated valley current limit and thermal shutdown provide robust protection in a tiny 1.6mm x 1.6mm footprint.

Applications

Distributed Power Systems
Provides localized regulation from 12V or 5V intermediate bus rails for digital logic and FPGAs.
Network Systems
Ideal for powering routers, switches, and storage devices requiring high efficiency and low EMI.
Consumer Electronics
Suited for flat screen TVs, set-top boxes, and home appliances where PCB space is at a premium.
FPGA and DSP Power
The fast transient response of the COT control supports the rapid load changes common in high-performance processors.

Key Specifications

Function Step-Down
Topology Buck
Output Type Adjustable
Mounting Type Surface Mount
Package / Case SOT-563, SOT-666
Current - Output 3A
Number of Outputs 1
Output Configuration Positive
Frequency - Switching 750kHz
Operating Temperature -40degC ~ 85degC (TA)
Synchronous Rectifier Yes
Voltage - Input (Max) 18V
Voltage - Input (Min) 4.2V
Voltage - Output (Max) 7V
Supplier Device Package SOT-563
Voltage - Output (Min/Fixed) 0.8V

Getting Started

When designing the PCB layout, place the input ceramic bypass capacitors as close as possible to the VIN and GND pins to minimize high-frequency switching noise. For rapid prototyping, engineers often use the AP62300SP-EVM evaluation board to verify thermal performance and transient response under specific load conditions. Ensure the feedback resistor divider is placed far from the inductor to avoid noise coupling into the sensitive FB pin.