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  • DRV8832 Low-Voltage Motor Driver IC

    • SLVSAB3I May   2010  – January 2016 DRV8832

      PRODUCTION DATA.  

  • CONTENTS
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  • DRV8832 Low-Voltage Motor Driver IC
  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 PWM Motor Driver
      2. 7.3.2 Bridge Control
      3. 7.3.3 Voltage Regulation
      4. 7.3.4 Reference Output
      5. 7.3.5 Current Limit
      6. 7.3.6 Protection Circuits
        1. 7.3.6.1 Overcurrent Protection (OCP)
        2. 7.3.6.2 Thermal Shutdown (TSD)
        3. 7.3.6.3 Undervoltage Lockout (UVLO)
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Motor Voltage
        2. 8.2.2.2 Motor Current Trip Point
        3. 8.2.2.3 Sense Resistor
        4. 8.2.2.4 Low Power Operation
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
    1. 9.1 Bulk Capacitance
    2. 9.2 Power Supervisor
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Thermal Considerations
      1. 10.3.1 Power Dissipation
      2. 10.3.2 Heatsinking
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information
  13. IMPORTANT NOTICE
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DATA SHEET

DRV8832 Low-Voltage Motor Driver IC

1 Features

  • H-Bridge Voltage-Controlled Motor Driver
    • Drives DC Motor, One Winding of a Stepper Motor, or Other Actuators/Loads
    • Efficient PWM Voltage Control for Constant Motor Speed With Varying Supply Voltages
    • Low MOSFET On-Resistance:
      HS + LS 450 mΩ
  • 1-A Maximum DC/RMS or Peak Drive Current
  • 2.75-V to 6.8-V Operating Supply Voltage Range
  • 300-nA (Typical) Sleep Mode Current
  • Reference Voltage Output
  • Current Limit Circuit
  • Fault Output
  • Thermally-Enhanced Surface Mount Packages

2 Applications

  • Battery-Powered:
    • Printers
    • Toys
    • Robotics
    • Cameras
    • Phones
  • Small Actuators, Pumps, and so forth

3 Description

The DRV8832 provides an integrated motor driver solution for battery-powered toys, printers, and other low-voltage or battery-powered motion control applications. The device has one H-bridge driver, and can drive one DC motor or one winding of a stepper motor, as well as other loads like solenoids. The output driver block consists of N-channel and P-channel power MOSFETs configured as an H-bridge to drive the motor winding.

Provided with sufficient PCB heatsinking, the DRV8832 can supply up to 1 A of DC/RMS or peak output current. The device operates on power supply voltages from 2.75 V to 6.8 V.

To maintain constant motor speed over varying battery voltages while maintaining long battery life, a PWM voltage regulation method is provided. An input pin allows programming of the regulated voltage. A built-in voltage reference output is also provided.

Internal protection functions are provided for overcurrent protection, short-circuit protection, undervoltage lockout, and overtemperature protection.

The DRV8832 also provides a current limit function to regulate the motor current during conditions like motor start-up or stall, as well as a fault output pin to signal a host processor of a fault condition.

The DRV8832 is available in a tiny 3-mm × 3-mm 10-pin VSON package and MSOP PowerPAD™ package (Eco-friendly: RoHS & no Sb/Br).

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
DRV8832 MSOP PowerPAD (10) 3.00 mm × 3.00 mm
VSON (10) 3.00 mm × 3.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

DRV8832 key_graphic_01_slvsab3.gif

4 Revision History

Changes from H Revision (October 2013) to I Revision

  • Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section Go
  • Added VHYS parameter row under the Logic-Level Inputs section in Electrical Characteristics Go
  • Changed the paragraph describing the FAULT behavior in Current LimitGo
  • Updated the paragraphs in Power Dissipation and added Equation 4Go

5 Pin Configuration and Functions

DGQ and DRC Packages
10-Pin MSOP PowerPAD and VSON
Top View
DRV8832 po_lvsab3.gif

Pin Functions

PIN I/O DESCRIPTION
NAME NO.
FAULTn 6 OD Fault output Open-drain output driven low if fault condition present
GND 5 — Device ground
IN1 9 I Bridge A input 1 Logic high sets OUT1 high
IN2 10 I Bridge A input 2 Logic high sets OUT2 high
ISENSE 2 IO Current sense resistor Connect current sense resistor to GND. Resistor value sets current limit level.
OUT1 3 O Bridge output 1 Connect to motor winding
OUT2 1 O Bridge output 2 Connect to motor winding
VCC 4 — Device and motor supply Bypass to GND with a 0.1-μF (minimum) ceramic capacitor.
VREF 8 O Reference voltage output Reference voltage output
VSET 7 I Voltage set input Input voltage sets output regulation voltage

6 Specifications

6.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted) (1)(2)
MIN MAX UNIT
Power supply voltage, VCC –0.3 7 V
Input pin voltage –0.5 7 V
Peak motor drive output current(3) Internally limited A
Continuous motor drive output current(3) –1 1 A
Continuous total power dissipation See Thermal Information
TJ Operating virtual junction temperature –40 150 °C
Tstg Storage temperature –60 150 °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltage values are with respect to network ground terminal.
(3) Power dissipation and thermal limits must be observed.

6.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins(1) ±2500 V
Charged device model (CDM), per JEDEC specification JESD22-C101, all pins(2) ±1000
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

6.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)
MIN NOM MAX UNIT
VCC Motor power supply voltage 2.75 6.8 V
IOUT Continuous or peak H-bridge output current(1) 0 1 A
(1) Power dissipation and thermal limits must be observed.

6.4 Thermal Information

THERMAL METRIC(1) DRV8832 UNIT
DGQ (MSOP PowerPAD) DRC (VSON)
10 PINS 10 PINS
RθJA Junction-to-ambient thermal resistance 69.3 50.2 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 63.5 78.4 °C/W
RθJB Junction-to-board thermal resistance 51.6 18.8 °C/W
ψJT Junction-to-top characterization parameter 1.5 1.1 °C/W
ψJB Junction-to-board characterization parameter 23.2 17.9 °C/W
RθJC(bot) Junction-to-case (bottom) thermal resistance 9.5 5.1 °C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953.

6.5 Electrical Characteristics

VCC = 2.75 V to 6.8 V, TA = –40°C to 85°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
POWER SUPPLIES
IVCC VCC operating supply current VCC = 5 V 1.4 2 mA
IVCCQ VCC sleep mode supply current VCC = 5 V, TA = 25°C 0.3 1 μA
VUVLO VCC undervoltage lockout voltage VCC rising 2.575 2.75 V
VCC falling 2.47
LOGIC-LEVEL INPUTS
VIL Input low voltage 0.25 × VCC V
VHYS Input hysteresis 0.08 × Vcc V
VIH Input high voltage 0.5 × VCC V
IIL Input low current VIN = 0 –10 10 μA
IIH Input high current VIN = 3.3 V 50 μA
LOGIC-LEVEL OUTPUTS (FAULTn)
VOL Output low voltage VCC = 5 V, IOL = 4 mA(1) 0.5 V
H-BRIDGE FETS
RDS(ON) HS FET on resistance VCC = 5 V, I O = 0.8 A, TJ = 85°C 290 400 mΩ
VCC = 5 V, I O = 0.8 A, TJ = 25°C 250
RDS(ON) LS FET on resistance VCC = 5 V, I O = 0.8 A, TJ = 85°C 230 320 mΩ
VCC = 5 V, I O = 0.8 A, TJ = 25°C 200
IOFF Off-state leakage current –20 20 μA
MOTOR DRIVER
tR Rise time VCC = 3 V, load = 4 Ω 50 300 ns
tF Fall time VCC = 3 V, load = 4 Ω 50 300 ns
fSW Internal PWM frequency 44.5 kHz
PROTECTION CIRCUITS
IOCP Overcurrent protection trip level 1.3 3 A
tOCP OCP deglitch time 2 μs
TTSD Thermal shutdown temperature Die temperature(1) 150 160 180 °C
VOLTAGE CONTROL
VREF Reference output voltage 1.235 1.285 1.335 V
ΔVLINE Line regulation VCC = 3.3 V to 6 V, VOUT = 3 V(1)
IOUT = 500 mA 		±1%
ΔVLOAD Load regulation VCC = 5 V, VOUT = 3 V
IOUT = 200 mA to 800 mA(1)		 ±1%
CURRENT LIMIT
VILIM Current limit sense voltage 160 200 240 mV
tILIM Current limit fault deglitch time 275 ms
RISEN Current limit set resistance (external resistor value) 0 1 Ω
(1) Not production tested.

6.6 Typical Characteristics

DRV8832 eff_vs_iload_lvsab2.gif
Figure 1. Efficiency vs Load Current
(VIN = 5 V, VOUT = 3 V)
DRV8832 C001_SLVSAB3.png Figure 3. IVCC vs VVCC
DRV8832 C003_SLVSAB3.png Figure 5. RDS(ON) vs VVCC
DRV8832 eff_vs_vout_lvsab3.gif Figure 2. Efficiency vs Output Voltage
(VIN = 5 V, IOUT = 500 mA)
DRV8832 C002_SLVSAB3.gif Figure 4. IVCCQ vs VVCC
DRV8832 C004_SLVSAB3.png Figure 6. RDS(ON) HS + LS vs Temperature

 
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