DRV8870 3.6A Brushed DC Motor Driver (PWM Ctrl) | TI.com

DRV8870 (ACTIVE)

3.6A Brushed DC Motor Driver (PWM Ctrl)

 

Description

The DRV8870 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 DRV8870 device features integrated current regulation, based on the analog input VREF and the voltage on the ISEN pin, which is proportional to motor current through an external sense resistor. 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

  • H-Bridge Motor Driver
    • Drives One DC Motor, One Winding of a Stepper Motor, or Other Loads
  • Wide 6.5-V to 45-V Operating Voltage
  • 565-mΩ Typical RDS(on) (HS + LS)
  • 3.6-A Peak Current Drive
  • PWM Control Interface
  • Integrated Current Regulation
  • Low-Power Sleep Mode
  • Small Package and Footprint
    • 8-Pin HSOP With PowerPAD™
    • 4.9 × 6.0 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

 
Vs (Min) (V)
Vs (Max) (V)
Peak Output Current (A)
Number of Half Bridges
Control I/F
RDS(ON) (HS + LS) (mOhms)
Rating
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
Approx. Price (US$)
DRV8870 DRV8801 DRV8801A-Q1 DRV8871 DRV8872
6.5     8     6.5     6.5     6.5    
45     38     36     45     45    
3.6     2.8     2.8     3.6     3.6    
2     2     2     2     2    
PWM     PH/EN     PH/EN     PWM     PWM    
565     830     830     565     565    
Catalog     Catalog     Automotive     Catalog     Catalog    
-40 to 125     -40 to 85     -40 to 125     -40 to 125     -40 to 125    
SO PowerPAD | 8     HTSSOP | 16
QFN | 16    
WQFN | 16     SO PowerPAD | 8     SO PowerPAD | 8    
8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)     16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)
16QFN: 16 mm2: 4 x 4 (QFN | 16)    
16WQFN: 16 mm2: 4 x 4 (WQFN | 16)     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)    
0.81 | 1ku     0.99 | 1ku     1.47 | 1ku     0.89 | 1ku     0.81 | 1ku    

Design tool

WEBENCH® Designer DRV8870

  Min   Max Range
Vin  V 6.50 to 45.00V
RMS Current  A ≤ 2A
Ambient Temp  °C -40 to 125°C