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Table Of Contents

PWM

PH and EN

nSLEEP

0 to 11 V

Controller

DRV8837

and

DRV8838

Brushed DC

Motor Driver

1.8 A

1.8 to 7 V

VCC

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

DRV8837, DRV8838

SLVSBA4C –JUNE 2012–REVISED FEBRUARY 2014

DRV883x Low-Voltage H-Bridge Driver

1 Features 3 Description

The DRV883x provides an integrated motor driver

• H-Bridge Motor Driver

solution for cameras, consumer products, toys, and

– Drives a DC Motor or Other Loads

other low-voltage or battery-powered motion control

– Low MOSFET On-resistance: HS + LS

applications. The device can drive one DC motor or

280 mΩ

other devices like solenoids. The output driver block

consists of N-channel power MOSFET’s configured

• 1.8-A Maximum Drive Current

as an H-bridge to drive the motor winding. An internal

• Separate Motor and Logic Supply Pins:

charge pump generates needed gate drive voltages.

– Motor VM: 0 to 11 V

The DRV883x can supply up to 1.8 A of output

– Logic VCC: 1.8 to 7 V

current. It operates on a motor power supply voltage

• PWM or PH/EN Interface

from 0 to 11 V, and a device power supply voltage of

1.8 V to 7.0 V.

– DRV8837: PWM, IN1/IN2

The DRV8837 has a PWM (IN/IN) input interface; the

– DRV8838: PH/EN

DRV8837 has a PH/EN input interface. Both

• Low-power Sleep Mode With 120-nA Maximum

interfaces are compatible with industry-standard

Sleep Current

devices.

– nSLEEP pin

Internal shutdown functions are provided for

• Small Package and Footprint

overcurrent protection, short circuit protection,

– 8 WSON (PowerPAD™)

undervoltage lockout, and overtemperature.

– 2.0 × 2.0 mm

Device Information

• Protection Features

ORDER NUMBER PACKAGE BODY SIZE

– VCC Undervoltage Lockout (UVLO)

DRV8837DSGR WSON (8) 2.0 × 2.0 mm

– Overcurrent Protection (OCP)

DRV8838DSGR WSON (8) 2.0 × 2.0 mm

– Thermal Shutdown (TSD)

2 Applications

• Cameras

• DSLR Lenses

• Consumer Products

• Toys

• Robotics

• Medical Devices

DRV883x

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.

Summary of content (26 pages)

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Product Folder Sample & Buy Support & Community Tools & Software Technical Documents DRV8837, DRV8838 SLVSBA4C – JUNE 2012 – REVISED FEBRUARY 2014 DRV883x Low-Voltage H-Bridge Driver 1 Features 3 Description • The DRV883x 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.
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DRV8837, DRV8838 SLVSBA4C – JUNE 2012 – REVISED FEBRUARY 2014 www.ti.com Table of Contents 1 2 3 4 5 6 7 Features ................................................................. Applications .......................................................... Description ............................................................ Revision History ................................................... Terminal Configuration and Functions ............... Specifications ..............................................
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DRV8837, DRV8838 www.ti.com SLVSBA4C – JUNE 2012 – REVISED FEBRUARY 2014 5 Terminal Configuration and Functions DRV8837 DSG – WSON (Top View) VM OUT1 OUT2 GND 1 2 3 8 GND (PPAD) 4 7 6 5 VCC nSLEEP IN1 IN2 DRV8838 DSG – WSON (Top View) VM OUT1 OUT2 GND 1 2 3 8 GND (PPAD) 4 7 6 5 VCC nSLEEP PH EN Terminal Descriptions TERMINAL NAME NUMBER TYPE DESCRIPTION POWER AND GROUND GND 4 PWR Device ground Must be connected to ground VCC 8 PWR Logic Power supply Bypass to GND with a 0.
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DRV8837, DRV8838 SLVSBA4C – JUNE 2012 – REVISED FEBRUARY 2014 www.ti.com 6 Specifications 6.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) (1) (2) MIN MAX Motor power supply voltage range (VM) –0.3 12 V Logic power supply voltage range (VCC) –0.3 7 V Control pin voltage range (IN1, IN2, PH, EN, nSLEEP) –0.
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DRV8837, DRV8838 www.ti.com SLVSBA4C – JUNE 2012 – REVISED FEBRUARY 2014 6.5 Electrical Characteristics TA = 25°C, over recommended operating conditions unless otherwise noted PARAMETER TEST CONDITIONS MIN TYP MAX UNIT POWER SUPPLIES (VM, VCC) VM IVM VM operating voltage VM operating supply current IVMQ VM sleep mode supply current VCC VCC operating voltage IVCC IVCCQ VCC operating supply current VCC sleep mode supply current 0 11 V 40 100 μA VM = 5 V; VCC = 3 V; 50 kHz PWM 0.
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DRV8837, DRV8838 SLVSBA4C – JUNE 2012 – REVISED FEBRUARY 2014 www.ti.com 6.
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DRV8837, DRV8838 www.ti.com SLVSBA4C – JUNE 2012 – REVISED FEBRUARY 2014 IN1 IN2 7 10 8 zz zz OUT1 9 zz OUT2 zz DRV8837 80% 80% OUTx 20% 11 20% 12 Figure 2.
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DRV8837, DRV8838 SLVSBA4C – JUNE 2012 – REVISED FEBRUARY 2014 www.ti.com 6.7 Typical Characteristics Plot generated using characterization data 700 650 H S + LS R D S (O N ) (m : ) 600 550 VM = 2 V, VCC = 2 V VM = 5 V, VCC = 3 V VM = 11 V, VCC = 5.5 V 500 450 400 350 300 250 200 -40 -20 0 20 40 T A (qC) 60 80 100 D001 Figure 3.
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DRV8837, DRV8838 www.ti.com SLVSBA4C – JUNE 2012 – REVISED FEBRUARY 2014 7 Detailed Description 7.1 Overview The DRV883x is a H-bridge driver that can drive one DC motor or other devices like solenoids. The outputs are controlled using either a PWM interface (IN1/IN2) on the DRV8837 or a PH/EN interface on the DRV8838. A low-power sleep mode is included, which can be enabled using the nSLEEP pin.
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DRV8837, DRV8838 SLVSBA4C – JUNE 2012 – REVISED FEBRUARY 2014 www.ti.com Functional Block Diagram (continued) 0 to 11 V VM VM VM Gate Drive Charge Pump OUT1 OCP 1.8 to 7 V VCC DCM VM VCC Logic Gate Drive OUT2 OCP PH EN OverTemp Osc nSLEEP GND B0479-01 Figure 5.
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DRV8837, DRV8838 www.ti.com SLVSBA4C – JUNE 2012 – REVISED FEBRUARY 2014 7.3 Feature Description 7.3.1 Bridge Control The DRV8837 is controlled using a PWM input interface, also called an IN/IN interface. Each output is controlled by a corresponding input pin. Table 1 shows the logic for the DRV8837 device: Table 1.
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DRV8837, DRV8838 SLVSBA4C – JUNE 2012 – REVISED FEBRUARY 2014 www.ti.com Thermal Shutdown (TSD): If the die temperature exceeds safe limits, all FETs in the H-bridge will be disabled. After the die temperature falls to a safe level, operation automatically resumes. Table 3. Fault Behavior Fault Condition H-bridge Recovery VCC undervoltage (UVLO) VCC < 1.7 V Disabled VCC > 1.8 V Overcurrent (OCP) IOUT > 1.
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DRV8837, DRV8838 www.ti.com SLVSBA4C – JUNE 2012 – REVISED FEBRUARY 2014 8 Applications and Implementation 8.1 Application Information The DRV883x is device is used to drive one DC motor or other devices like solenoids. The following design procedure can be used to configure the DRV883x. 8.2 Typical Applications DRV8837 and DRV8838 VM 1 0.1 µF VM 2 VCC 0.1 µF 7 OUT1 nSLEEP OUT2 IN1/PH 6 4 GND PAD 3 M 8 VCC 5 IN2/EN Figure 6. Schematic of DRV883x Application 8.2.
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DRV8837, DRV8838 SLVSBA4C – JUNE 2012 – REVISED FEBRUARY 2014 www.ti.com 8.2.3 Application Performance Plots 14 Figure 7. 50% Duty Cycle, Forward Direction Figure 8. 50% Duty Cycle, Reverse Direction Figure 9. 20% Duty Cycle, Forward Direction Figure 10.
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DRV8837, DRV8838 www.ti.com SLVSBA4C – JUNE 2012 – REVISED FEBRUARY 2014 9 Power Supply Recommendations VCC and VM may be applied and removed in any order. When VCC is removed, the device enters a low power state and draws very little current from VM. VCC and VM may be connected together if the supply voltage is between 1.8 and 7 V. Bypass VM and VCC with 0.1-µF ceramic capacitors rated for VM and VCC. Place these capacitors as close to the device as possible.
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DRV8837, DRV8838 SLVSBA4C – JUNE 2012 – REVISED FEBRUARY 2014 www.ti.com 10 Layout 10.1 Layout Guidelines The VM and VCC terminals should be bypassed to GND using low-ESR ceramic bypass capacitors with a recommended value of 0.1 µF rated for VM and VCC. These capacitors should be placed as close to the VM and VCC pins as possible with a thick trace or ground plane connection to the device GND pin. 10.2 Layout Example 0.1 µF 0.1 µF VM VCC OUT1 nSLEEP OUT2 IN1/PH GND IN2/EN Figure 11.
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DRV8837, DRV8838 www.ti.com SLVSBA4C – JUNE 2012 – REVISED FEBRUARY 2014 11 Device and Documentation Support 11.1 Related Links The following table lists quick access links. Categories include technical documents, support and community resources, tools and software, and quick access to sample or buy. Table 6.
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DRV8837, DRV8838 SLVSBA4C – JUNE 2012 – REVISED FEBRUARY 2014 www.ti.com 12 Mechanical, Packaging, and Orderable Information The following pages include mechanical packaging and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 17-May-2014 Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties.
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PACKAGE MATERIALS INFORMATION www.ti.com 13-Mar-2014 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing DRV8837DSGR WSON DSG 8 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 3000 180.0 8.4 2.3 2.3 1.15 4.0 8.0 Q2 DRV8837DSGT WSON DSG 8 250 180.0 8.4 2.3 2.3 1.15 4.0 8.0 Q2 DRV8838DSGR WSON DSG 8 3000 180.0 8.4 2.3 2.3 1.15 4.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 13-Mar-2014 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) DRV8837DSGR WSON DSG 8 3000 210.0 185.0 35.0 DRV8837DSGT WSON DSG 8 250 210.0 185.0 35.0 DRV8838DSGR WSON DSG 8 3000 210.0 185.0 35.0 DRV8838DSGT WSON DSG 8 250 210.0 185.0 35.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.