Datasheet > MAX14871_14

MAX14871_14

更新时间： 2024-11-30 01:18:55

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
15页	468K
描述
4.5V to 36V Full-Bridge DC Motor Driver

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中文翻译

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数据手册

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MAX14871_14 数据手册

EVALUATION KIT AVAILABLE

MAX14871

4.5V to 36V Full-Bridge DC Motor Driver

General Description

Beneﬁts and Features

● Drive More Power and Reduce Footprint

The MAX14871 DC motor driver provides a low-power

and simple solution for driving and controlling brushed

motors with voltages between 4.5V and 36V. Very low

driver on resistance reduces power during dissipation.

• Up to 2.8A Peak Motor-Current Package

• Flexible 4.5V–36V Supply Enables Longer Runtime

● Low Power Consumption Runs Cooler and Longer

• 334mΩ (typ) Total Bridge On-Resistance

The MAX14871 features a charge-pump-less design for

reduced external components and low supply current.

Integrated current regulation allows user-defined peak startup

motor currents and requires minimal external components.

• 1mA (typ) Supply Current at 30kHz/24V

• 10µA (max) Standby Current at 12V

● Simplified Designs Reduces Time to Market

The MAX14871 includes 3 modes of current regulation:

fast decay, slow decay, and 25% current ripple modes.

Current regulation based on 25% ripple simplifies the

design and enables regulation independent of motor

characteristics. A separate voltage sense input (SNS) reduc-

es current-sensing errors due to parasitic trace resistance.

• Charge-Pump-Less Architecture

• Current Regulation Only Requires a Sense Resistor

• Current-Sense Input Simpliﬁes PCB Layout

• Internal/External V

for Current Regulation

REF

• Fast/Slow/25% Ripple Current Regulation Modes

● Integrated Protection Provides Robust Driving Solutions

The MAX14871 features shoot-through protection and

internal free-wheeling diodes that absorb inductive motor

currents. Driver outputs are short-circuit-protected from

shorts to ground, to the supply, and between M1 and M2.

An active-low FAULT output signals thermal overload and

overcurrents during fault conditions.

• Short-Circuit-Protected Drivers

• Thermal Shutdown Undervoltage Lockout

• Diagnostic FAULT Output

• -40°C to +85°C Temperature Range

The MAX14871 is available in a 16-pin TSSOP-EP package

and operates over the -40°C to +85°C temperature range.

Ordering Information appears at end of data sheet.

Applications

● Printers and Scanners

● Industrial Automation

● Vending and Gaming Machines

Typical Application Circuit

24V

3.3V

MAX14871

FAULT

IRQ

DIR

GPO

PWM

µC

PWM

DRIVER

3.3V

DRIVER

REF

TCOFF

CURRENT

REGULATION

C_OFF

MODE

GND

COM

SNS

SENSE

19-7063; Rev 0; 9/14

12 3 4 5 6 7...15

中文翻译

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与MAX14871_14相关器件

型号	品牌	获取价格	描述	数据表
MAX14871EUE+	MAXIM	获取价格	Brush DC Motor Controller, 2.8A, BICMOS, PDSO16, ROHS COMPLIANT, TSSOP-16
MAX14872	MAXIM	获取价格	Full-Bridge DC Motor Drivers
MAX14872	ADI	获取价格	紧凑的4.5V至36V全桥式直流电机驱动器
MAX14872ETC+T	MAXIM	获取价格	IC MOTOR DVR DC FULL BR 12TDFN
MAX14874	ADI	获取价格	4.5V至36V双路继电器/阀门/电机驱动器
MAX14878	ADI	获取价格	2.75kV和5kV隔离型CAN收发器
MAX14879	ADI	获取价格	2.75kV和5kV隔离型CAN收发器
MAX1487C	MAXIM	获取价格	Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers
MAX1487C/D	MAXIM	获取价格	Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers
MAX1487CPA	MAXIM	获取价格	Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers

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