DRV8838 Driver Datasheet

DRV8838 Datasheet, PDF, Equivalent


Part Number

DRV8838

Description

Low-Voltage H-Bridge Driver

Manufacture

etcTI

Total Page 27 Pages
Datasheet
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DRV8838
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DRV8837, DRV8838
SLVSBA4E – JUNE 2012 – REVISED JUNE 2016
DRV883x Low-Voltage H-Bridge Driver
1 Features
1 H-Bridge Motor Driver
– Drives a DC Motor or Other Loads
– Low MOSFET On-Resistance: HS + LS
280 mΩ
• 1.8-A Maximum Drive Current
• Separate Motor and Logic Supply Pins:
– Motor VM: 0 to 11 V
– Logic VCC: 1.8 to 7 V
• PWM or PH-EN Interface
– DRV8837: PWM, IN1 and IN2
– DRV8838: PH and EN
• Low-Power Sleep Mode With 120-nA Maximum
Sleep Current
– nSLEEP pin
• Small Package and Footprint
– 8-Pin WSON With Thermal Pad
– 2.0 × 2.0 mm
• Protection Features
– VCC Undervoltage Lockout (UVLO)
– Overcurrent Protection (OCP)
– Thermal Shutdown (TSD)
2 Applications
• Cameras
• DSLR Lenses
• Consumer Products
• Toys
• Robotics
• Medical Devices
3 Description
The DRV883x family of devices provides an
integrated motor driver solution for cameras,
consumer products, toys, and other low-voltage or
battery-powered motion control applications. The
device can drive one dc motor or other devices like
solenoids. The output driver block consists of N-
channel power MOSFETs configured as an H-bridge
to drive the motor winding. An internal charge pump
generates needed gate drive voltages.
The DRV883x family of devices can supply up to
1.8 A of output current. It operates on a motor power
supply voltage from 0 to 11 V, and a device power
supply voltage of 1.8 V to 7 V.
The DRV8837 device has a PWM (IN1-IN2) input
interface; the DRV8838 device has a PH-EN input
interface. Both interfaces are compatible with
industry-standard devices.
Internal shutdown functions are provided for
overcurrent protection, short-circuit protection,
undervoltage lockout, and overtemperature.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DRV8837
DRV8838
WSON (8)
2.00 mm × 2.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
DRV883x Simplified Diagram
1.8 V to 7 V
VCC
0 V to 11 V
VM
PWM
or
PH and EN
DRV8837 and
DRV8838
nSLEEP
Brushed DC Motor
Driver
1.8 A
M
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.

DRV8838
DRV8837, DRV8838
SLVSBA4E – JUNE 2012 – REVISED JUNE 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 4
6 Specifications......................................................... 5
6.1 Absolute Maximum Ratings ...................................... 5
6.2 ESD Ratings.............................................................. 5
6.3 Recommended Operating Conditions....................... 5
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics........................................... 6
6.6 Timing Requirements ................................................ 7
6.7 Typical Characteristics .............................................. 8
7 Detailed Description .............................................. 9
7.1 Overview ................................................................... 9
7.2 Functional Block Diagram ......................................... 9
7.3 Feature Description................................................. 11
7.4 Device Functional Modes........................................ 12
8 Application and Implementation ........................ 13
8.1 Application Information............................................ 13
8.2 Typical Application .................................................. 13
9 Power Supply Recommendations...................... 15
9.1 Bulk Capacitance .................................................... 15
10 Layout................................................................... 16
10.1 Layout Guidelines ................................................. 16
10.2 Layout Example .................................................... 16
10.3 Power Dissipation ................................................. 16
11 Device and Documentation Support ................. 17
11.1 Documentation Support ........................................ 17
11.2 Related Links ........................................................ 17
11.3 Receiving Notification of Documentation Updates 17
11.4 Community Resources.......................................... 17
11.5 Trademarks ........................................................... 17
11.6 Electrostatic Discharge Caution ............................ 17
11.7 Glossary ................................................................ 17
12 Mechanical, Packaging, and Orderable
Information ........................................................... 18
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision D (December 2015) to Revision E
Page
• Changed the threshold type to the input logic voltage parameters in the Electrical Characteristics table............................. 6
• Changed the units for the input logic hysteresis parameter from mV to V in the Electrical Characteristics table ................. 6
• Added the Receiving Notification of Documentation Updates section ................................................................................ 17
Changes from Revision C (February 2014) to Revision D
Page
• Clarified the input interface for each device in the Description section ................................................................................. 1
• Added CDM and HBM ESD ratings to the ESD Ratings table .............................................................................................. 5
Changes from Revision B (December 2013) to Revision C
Page
• Added the DRV8838 device information, specifications, and timing diagrams ...................................................................... 1
• Added Device Information table ............................................................................................................................................. 1
• Added a PWM interface diagram .......................................................................................................................................... 1
• Added more information to the Detailed Description and moved information from the Functional Description .................... 9
• Added functional block diagram for DRV8838 .................................................................................................................... 10
• Added the Application and Implementation section ............................................................................................................ 13
• Added Power Supply Recommendations, Layout, Device and Documentation Support, and Mechanical, Packaging,
and Orderable Information sections ..................................................................................................................................... 15
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Copyright © 2012–2016, Texas Instruments Incorporated
Product Folder Links: DRV8837 DRV8838


Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design DRV8837, D RV8838 SLVSBA4E – JUNE 2012 – REVIS ED JUNE 2016 DRV883x Low-Voltage H-Brid ge Driver 1 Features •1 H-Bridge Mot or Driver – Drives a DC Motor or Othe r Loads – Low MOSFET On-Resistance: H S + LS 280 mΩ • 1.8-A Maximum Drive Current • Separate Motor and Logic Su pply Pins: – Motor VM: 0 to 11 V – Logic VCC: 1.8 to 7 V • PWM or PH-EN Interface – DRV8837: PWM, IN1 and IN2 – DRV8838: PH and EN • Low-Power S leep Mode With 120-nA Maximum Sleep Cur rent – nSLEEP pin • Small Package a nd Footprint – 8-Pin WSON With Therma l Pad – 2.0 × 2.0 mm • Protection Features – VCC Undervoltage Lockout ( UVLO) – Overcurrent Protection (OCP) – Thermal Shutdown (TSD) 2 Applicatio ns • Cameras • DSLR Lenses • Cons umer Products • Toys • Robotics • Medical Devices 3 Description The DRV 883x family of devices provides an integrated motor driver solution for cameras, consumer products, toys, and other low.
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