MAX1674 - 高效率、低电源电流、紧凑的、升压型DC-DC转换器

MAX1674是Maxim美信半导体公司的一款DC-DC开关调节器产品，MAX1674是高效率、低电源电流、紧凑的、升压型DC-DC转换器，本站介绍了MAX1674的封装应用图解、特点和优点、功能等，并给出了与MAX1674相关的Maxim元器件型号供参考。

MAX1674 - 高效率、低电源电流、紧凑的、升压型DC-DC转换器 - DC-DC开关调节器 - 紧凑的低成本、低噪声设计：电感阻尼开关可有效降低纹波，改善EMI抑制 - 美信半导体

产品概述

The MAX1674/MAX1675/MAX1676 compact, high-efficiency, step-up DC-DC converters fit in small µMAX packages. They feature a built-in synchronous rectifier, which improves efficiency and reduces size and cost by eliminating the need for an external Schottky diode. Quiescent supply current is only 16µA.

The input voltage ranges from 0.7V to VOUT, where VOUT can be set from 2V to 5.5V. Start-up is guaranteed from 1.1V inputs. The MAX1674/MAX1675/MAX1676 have a preset, pin-selectable output for 5V or 3.3V. The outputs can also be adjusted to other voltages using two external resistors.

All three devices have a 0.3Ω N-channel MOSFET power switch. The MAX1674 has a 1A current limit. The MAX1675 has a 0.5A current limit, which permits the use of a smaller inductor. The MAX1676 comes in a 10-pin µMAX package and features an adjustable current limit and circuitry to reduce inductor ringing.

关键特性

以下关键特性由Maxim美信半导体提供：

94% Efficient at 200mA Output Current

16µA Quiescent Supply Current

Internal Synchronous Rectifier (no external diode)

0.1µA Logic-Controlled Shutdown

LBI/LBO Low-Battery Detector

Selectable Current Limit for Reduced Ripple

Low-Noise, Anti-Ringing Feature (MAX1676)

8-Pin and 10-Pin µMAX Packages

Preassembled Evaluation Kit (MAX1676EVKIT)

热门应用

1节至3节电池供电的手持设备

手持式计算机

医疗设备

寻呼机

PDA

射频标记

无线电话

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