Datasheet > MAX14870

MAX14870

更新时间： 2024-11-30 14:57:51

品牌	Logo	应用领域
亚德诺 - ADI		电机驱动驱动器
页数	文件大小	规格书
15页	417K
描述
紧凑的4.5V至36V全桥式直流电机驱动器

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中文翻译

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数据手册

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MAX14870 数据手册

EVALUATION KIT AVAILABLE

MAX14870/MAX14872

Compact 4.5V to 36V

Full-Bridge DC Motor Drivers

General Description

Beneﬁts and Features

● Small Package Handles High Power and Reduces

The MAX14870/MAX14872 motor drivers provide a small,

low-power and simple solution for driving and controlling

brushed DC motors and relays with voltages between

4.5V and 36V. Very low driver on-resistance reduces

power dissipation.

Footprint Circuit Size

• Up to 2.5A Peak Motor Current

• Space-Saving TDFN-EP (3mm x 3mm) Package

• Flexible 4.5V–36V Supply Enables Longer Runtime

on Batteries

These drivers feature a charge-pump-less design for

reduced external components and low supply current.

Integrated fast-decay current regulation allows user-

adjustable peak startup motor currents and requires mini-

mal external components.

● Low Power Consumption Runs Cooler and Longer

• 280mW (typ) Total Bridge On-Resistance

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

• 10µA (max) Standby Current at 12V

● Simplified Designs Reduces Time to Market

• Charge-Pump-Less Architecture

A separate voltage-sense input (SNS) reduces current

sensing errors due to parasitic trace resistance.

• Current Regulation Only Requires a Sense Resistor

• Current-Sense Input Simpliﬁes PCB Layout

The MAX14870/MAX14872 features shoot-through protec-

tion 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.

● Integrated Protection Provides Robust Driving Solution

• Short-Circuit-Protected Drivers

• Thermal-Shutdown Undervoltage Lockout

• Diagnostic FAULT Output

• -40°C to +85°C Temperature Range

The MAX14870 has PWM and direction-control inputs,

while the MAX14872 has forward and reverse inputs for

direction control. See the Function Tables.

Applications

● Printers and Scanners

● Relay Drivers

● Vending and Gaming Machines

The MAX14870/MAX14872 are available in a 12-pin

(3mm x 3mm) TDFN-EP package and operate over the

-40°C to +85°C temperature range.

Ordering Information appears at end of data sheet.

Typical Application Circuit

24V

3.3V

MAX14870

MAX14872

FAULT

DIR⁺

IRQ

µC

GPO

PWM

PWM⁺

DRIVER

CURRENT

REGULATION

GND

SNS

COM

SENSE

+ THESE PIN NAMES ARE FOR THE MAX14870. ON THE MAX14872, THESE ARE THE FWD AND REV INPUTS.

19-7062; Rev 1; 6/17

12 3 4 5 6 7...15

中文翻译

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与MAX14870相关器件

型号	品牌	获取价格	描述	数据表
MAX14870EVKIT	MAXIM	获取价格	Operates from a Wide 4.5V to 36V Supply
MAX14871	MAXIM	获取价格	4.5V to 36V Full-Bridge DC Motor Driver
MAX14871	ADI	获取价格	4.5V至36V全桥式直流电机驱动器
MAX14871_14	MAXIM	获取价格	4.5V to 36V Full-Bridge DC Motor Driver
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

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