Datasheet > UMD9148

UMD9148

更新时间： 2024-09-27 14:52:19

品牌	Logo	应用领域
友顺 - UTC		/
页数	文件大小	规格书
10页	248K
描述
dual h-bridge motor driver

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UMD9148 数据手册

UNISONIC TECHNOLOGIES CO., LTD

UMD9148

Preliminary

LINEAR INTEGRATED CIRCUIT

DUAL H-BRIDGE MOTOR

DRIVER



DESCRIPTION

The UMD9148 provides a dual H-bridge motor driver for home

appliances and other mechatronic applications. The device can

be used to drive one or two DC motors, a bipolar stepper motor,

or other loads. A simple PWM interface allows easy inter facing to

controller circuits.

The output block of each H-bridge driver consists of N-channel

and P-channel power MOSFETs configured as full H-bridges to

drive the motor windings. Each H-bridge includes circuitry to

regulate the winding current using a fixed off-time chopping

scheme. The UMD9148 is capable of driving up to 2A of current

from each output or 4A of current in parallel mode(with proper

heat sinking, at 12V and T_A=25°C).

A low-power sleep mode is provided, which shuts down

internal circuitry to achieve very-low quiescent current draw. This

sleep mode can be set using a dedicated nSLEEP pin.

Internal protection functions are provided for UVLO, OCP,

short-circuit protection, and over temperature. Fault conditions

are indicated by an FAULT pin.



FEATURES

* Dual H-Bridge Motor Driver Single/Dual Brushed DC Stepper

* PWM Control Interface

* Optional Current Regulation With 20-μs Fixed Off-Time

* High Output Current per H-Bridge

2A Maximum Driver Current at 12V and T_A=25°C

Parallel Mode Available Capable of 4-A Maximum Driver

Current at 12V and T_A=25°C

* 4 to 18V Operating Supply Voltage Range

* Low-Current3-µA sleep Mode

* Thermally-Enhanced Surface Mount Package

* Protection Features

V_MUnder voltage Lockout (UVLO)

Over current Protection (OCP)

Thermal Shutdown (TSD)

Fault Condition Indication Pin (nFAULT)

www.unisonic.com.tw

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