AMT49702 Dual DMOS Full-Bridge Motor Driver FEATURES AND BENEFITS DESCRIPTION Designed for pulse-width-modulated (PWM) control of low- AEC-Q100 Grade 1 qualified voltage stepper motors and single and dual DC motors, the Wide, 3.5 to 15 V input voltage operating range AMT49702 is capable of output currents up to 1 A per channel Dual DMOS full-bridges: drive two DC motors or and operating voltages from 3.5 to 15 V. one stepper motor Low R outputs DS(ON) The AMT49702 is an automotive-grade device and is tested Synchronous rectification for reduced power dissipation across extended temperature and voltage ranges to ensure Low-current sleep mode compliance in automotive or industrial applications. Overcurrent protection The AMT49702 has an internal fixed off-time PWM timer that Internal UVLO and thermal shutdown circuitry sets a peak current based on the selection of a current sense Integrated charge pump resistor. An output fault flag is provided that notifies the user of a TSD or overcurrent protection event. PACKAGE: The AMT49702 is supplied in a low-profile 16-lead TSSOP (suffix LP) with exposed power tab for enhanced thermal 16-lead TSSOP dissipation. (suffix LP) Not to scale VCP VCP 0.1 F 0.1 F 3.5 to 15 V 3.5 to 15 V VBB VBB SLEEPn SLEEPn AMT49702 AMT49702 IN1 IN1 IN2 IN2 OUT1A OUT1A CLKIN3 CLKIN3 OUT1B OUT1B IN4 IN4 DC Step Motor Motor SENSE1 FAULTn FAULTn SENSE1 OUT2A OUT2A OUT2B OUT2B DC Motor GND SENSE2 SENSE2 GND Figure 1: Typical Applications AMT49702-DS, Rev. 1 August 30, 2017 MCO-0000239AMT49702 Dual DMOS Full-Bridge Motor Driver SPECIFICATIONS SELECTION GUIDE Part Number Packaging Packing AMT49702KLPATR 16-lead TSSOP package 4000 pieces per 13-inch reel ABSOLUTE MAXIMUM RATINGS Characteristic Symbol Notes Rating Unit Supply Voltage V 15 V BB Output Current I Continuous 1.0 A OUT Output Current (parallel mode) I Continuous 1.8 A OUT(PAR) Continuous 0.5 V Sense Voltage V SENSEx Pulsed, t < 1 s 2.5 V w Logic Input Voltage Range V 0.3 to 5.5 V IO Junction Temperature T 150 C J(MAX) Storage Temperature Range T 55 to 150 C stg Operating Temperature Range T Range K 40 to 125 C A THERMAL CHARACTERISTICS: May require derating at maximum conditions see application information Characteristic Symbol Test Conditions* Value Unit LP package, 16-lead TSSOP R 4-layer PCB based on JEDEC standard 34 C/W JA *Additional thermal information available on the Allegro website. Allegro MicroSystems, LLC 2 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000 www.allegromicro.com