DRV8871-Q1 3.6A Automotive Brushed DC Motor Driver With Integrated Current Sensing (PWM Ctrl) | TI.com

DRV8871-Q1
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3.6A Automotive Brushed DC Motor Driver With Integrated Current Sensing (PWM Ctrl)

 

Description

The DRV8871-Q1 device is a brushed-DC motor driver for printers, appliances, industrial equipment, and other small machines. Two logic inputs control the H-bridge driver, which consists of four N-channel MOSFETs that can control motors bidirectionally with up to 3.6-A peak current. The inputs can be pulse-width modulated (PWM) to control motor speed, using a choice of current-decay modes. Setting both inputs low enters a low-power sleep mode.

The DRV8871-Q1 device has advanced current-regulation circuitry that does not use an analog voltage reference or external sense resistor. This novel solution uses a standard low-cost, low-power resistor to set the current threshold. The ability to limit current to a known level can significantly reduce the system power requirements and bulk capacitance needed to maintain stable voltage, especially for motor startup and stall conditions.

The device is fully protected from faults and short circuits, including undervoltage (UVLO), overcurrent (OCP), and overtemperature (TSD). When the fault condition is removed, the device automatically resumes normal operation.

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • H-Bridge Motor Driver
    • Drives One DC Motor, One Winding of a Stepper Motor, or Other Loads
  • Wide 6.8-V to 45-V Operating Voltage
  • 565-mΩ Typical RDS(on) (HS + LS)
  • 3.6-A Peak Current Drive
  • PWM Control Interface
  • Current Regulation Without a Sense Resistor
  • Low-Power Sleep Mode
  • Small Package and Footprint
    • 8-Pin HSOP With PowerPAD™
    • 4.9 × 6 mm
  • Integrated Protection Features
    • VM Undervoltage Lockout (UVLO)
    • Overcurrent Protection (OCP)
    • Thermal Shutdown (TSD)
    • Automatic Fault Recovery

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Parametrics

Compare all products in Brushed DC (BDC) motor drivers Email Download to Excel
Part number Order Number of full bridges Vs (Min) (V) Vs (Max) (V) Peak output current (A) RDS(ON) (HS + LS) (mOhms) Control mode Control interface Features Package size: mm2:W x L (PKG) Approx. price (US$) Rating
DRV8871-Q1 Order now 1     6.5     45     3.7     565     PWM     Hardware (GPIO)     Current Regulation
Integrated Current Sensing    
8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)     1.14 | 1ku     Automotive    
DRV8872-Q1 Order now 1     6.5     45     3.7     565     PWM     Hardware (GPIO)     Current Regulation     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)     1.15 | 1ku     Automotive    
DRV8873-Q1 Order now 1     4.5     37     10     150     PWM
PH/EN
Independent 1/2-H PWM    
SPI
Hardware (GPIO)    
Integrated Current Sensing
Current Sense Amplifier
Open-Load Detection    
24HTSSOP: 34 mm2: 4.4 x 7.8 (HTSSOP | 24)     1.75 | 1ku     Automotive