MAX758A - 可调、PWM、降压型稳压器

MAX758A是Maxim美信半导体公司的一款DC-DC开关调节器产品，MAX758A是可调、PWM、降压型稳压器，本站介绍了MAX758A的封装应用图解、特点和优点、功能等，并给出了与MAX758A相关的Maxim元器件型号供参考。

MAX758A - 可调、PWM、降压型稳压器 - DC-DC开关调节器 - 对于新设计推荐使用性能更好的器件：MAX887替代MAX750A，MAX1684/MAX1685替代MAX758A - 美信半导体

产品概述

The MAX750A/MAX758A are adjustable-output, CMOS, step-down, DC-DC switching regulators. The MAX758A accepts inputs from 4V to 16V and delivers 750mA, while the MAX750A accepts inputs from 4V to 11V and delivers 450mA. Typical efficiencies are 85% to 90%. Typical quiescent current is 1.7mA, or only 6µA in shutdown mode. The output does not exhibit any ripple at subharmonics of the switching frequency over its specified range.

Pulse-width-modulation (PWM) current-mode control provides precise output regulation and excellent transient responses. Output voltage accuracy is guaranteed to be ±4.5% plus feedback-resistor tolerance over line, load, and temperature variations. Fixed-frequency switching and absence of subharmonic ripple allows easy filtering of output ripple and noise, as well as the use of small external components. These regulators require only a single inductor value to work in most applications, so no inductor design is necessary.

关键特性

以下关键特性由Maxim美信半导体提供：

Up to 750mA Load Currents

160kHz High-Frequency, Current-Mode PWM

85% to 96% Efficiencies

33µH or 100µH Pre-Selected Inductor Value, No Component Design Required

1.7mA Quiescent Supply Current

6µA Shutdown Supply Current

Adjustable Output Voltage

Overcurrent, Soft-Start, and Undervoltage Lockout Protection

Cycle-by-Cycle Current Limiting

8-Pin DIP/SO Packages (MAX750A)

热门应用

蜂窝电话

计算机外设

便携式通信设备

便携式仪表

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