深圳市中立信电子科技有限公司

MAX1951AESA+

1MHz, 2A, 2.6V to 5.5V Input, PWM DC-DC  Step-Down Regulator with Enable

开关稳压器 1MHz 2A 2.6-5.5V PWM DC/DC Step-Down

General Description

The MAX1951AESA+ MAX1951A high-efficiency, DC-DC step-down switching regulator delivers up to 2A of output current. The device operates from an input voltage range of 2.6V to 5.5V and provides an adjustable output voltage from 0.8V to VIN, making the MAX1951A ideal for on-board postregulation applications. The MAX1951A total output error is less than ±1.5% over load, line, and temperature.

Features MAX1951AESA+

♦ Compact 0.385in2 Circuit Footprint

♦ 10μF Ceramic Input and Output Capacitors, 2μH

Inductor for 2A Output

♦ Efficiency Up to 94%

♦ 1.5% Output Accuracy Over Load, Line, and

Temperature

♦ Guaranteed 2A Output Current

♦ Operates from 2.6V to 5.5V Supply

♦ Adjustable Output from 0.8V to VIN

♦ Internal Digital Soft-Soft

♦ Short-Circuit and Thermal-Overload Protection

♦ 1MHz Switching Frequency Reduces Component Size

♦ Enable Input Audio Shutdown for Reducing Power Consumption

♦ Safe Startup into Prebiased Output

Applications MAX1951AESA+

ASIC/DSP/μP/FPGA Core and I/O Voltages

Set-Top Boxes

Networking and Telecommunications

Servers

TVs