MAX1951A 1MHz、全陶瓷电容、2.6V至5.5V输

MAX1951A 1MHz、全陶瓷电容、2.6V至5.5V输入、2A、PWM降压型DC-DC调节器

概述

The 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 V_IN, making the MAX1951A ideal for on-board postregulation applications. The MAX1951A total output error is less than ±1.5% over load, line, and temperature.

The MAX1951A operates at a fixed frequency of 1MHz with an efficiency of up to 94%. The high operating frequency minimizes the size of external components. Internal soft-start control circuitry reduces inrush current. Short-circuit and thermal-overload protection improve design reliability.

The MAX1951A can start up safely with a prebiased or without a preexisting output. This feature simplifies tracking supply designs for core and I/O applications and redundant supply designs.

The MAX1951A is available in an 8-pin SO package and operates over the -40°C to +85°C extended temperature range.

MAX1951/MAX1951A,pdf datasgeet (PWM DC-DC Step-Down Regulator)

关键特性

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 V_IN

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

应用/使用

 ASIC/DSP/µP/FPGA核以及I/O电压
 网络与电信系统
 服务器
 机顶盒
 TV
 
Typical Operating Circuit