Datasheet > US890

US890

更新时间： 2024-11-21 03:22:55

品牌	Logo	应用领域
迈来芯 - MELEXIS		驱动器风扇
页数	文件大小	规格书
12页	316K
描述
Two-Coil Fan Driver - High Output Current

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US890 数据手册

US890 / US891

Two-Coil Fan Driver – High Output Current

Features and Benefits

Application Examples

ꢀ Peak output current up to 1200mA

ꢀ Low start-up voltage

ꢀ Low output resistance

ꢀ 5V/12V DC brushless motor/fan

ꢀ PC, server, laptop cooling fan

ꢀ Power supply cooling fan

ꢀ Large and small fan size

ꢀ High sensitivity integrated Hall Sensor

ꢀ Power-efficient CMOS and power MOSFETs

ꢀ Built-in output protection clamping diode

ꢀ Locked rotor protection and auto-restart

ꢀ Integrated tachometer (US890) or alarm (US891)

signal protected output

ꢀ Low cost

ꢀ 2-coil fan driver with FG/RD output in

RoHS Compliant 4-pin VK package

Ordering Information

Part No.

US890

US891

Temperature Code

E (-40°C to 85°C)

Package Code

VK (4-pin TO-92)

1 Functional Diagram

2 General Description

The US890/891 is a one-chip solution for driving

two-coil brushless DC motors and fans.

Based on the advanced Melexis CMOS process,

the IC contains a Hall-effect sensor, dynamic

offset correction and powerful output drivers with

1200mA peak output current capability.

Specially designed for driving large fans, the

device is optimized for low start-up voltage.

Frequency Generator or Rotation Detection is

available. The open-drain output makes easier the

connectivity with any external interface such as

hardware monitoring or Super I/O IC.

These features are combined with the Melexis

patented no-V_DDdesign to fit the IC in a small 4-

pin VK package.

3901000890

Rev 002

Page 1 of 12

Data Sheet

Sep/07

12 3 4 5 6 7...12

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与US890相关器件

型号	品牌	获取价格	描述	数据表
US890EVK	MELEXIS	获取价格	Two-Coil Fan Driver - High Output Current
US891	MELEXIS	获取价格	Two-Coil Fan Driver - High Output Current
US891EVK	MELEXIS	获取价格	Two-Coil Fan Driver - High Output Current
US8A	MDD	获取价格	SURFACE MOUNT ULTRA FAST RECTIFIER
US8AC~US8MC	FOSHAN	获取价格	SMC
US8KB80R	SHINDENGEN	获取价格	Silicon Bridge Diodes
US90	ETC	获取价格	US90 24V Hall IC Fan driver with Tachometer
US90A	MELEXIS	获取价格	24V Hall IC Fan Driver
US90AEDC	MELEXIS	获取价格	24V Hall IC Fan Driver
US90AEVA	MELEXIS	获取价格	24V Hall IC Fan Driver