DRV8872_15 Datasheet, PDF (1/25 Pages) Texas Instruments – DRV8872 3.6-A Brushed DC Motor Driver With Fault Reporting (PWM Control)

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DRV8872
SLVSCZ0A – AUGUST 2015 – REVISED AUGUST 2015
DRV8872 3.6-A Brushed DC Motor Driver With Fault Reporting (PWM Control)
1 Features
•1 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 R_DS(on) (HS + LS)
• 3.6-A Peak Current Drive
• PWM Control Interface
• Integrated Current Regulation
• Low-Power Sleep Mode
• Fault Status Output Pin
• 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)
– Fault Reporting (nFAULT)
– Automatic Fault Recovery
2 Applications
• Printers
• Appliances
• Industrial Equipment
• Other Mechatronic Applications
SPACE
Simplified Schematic
6.5 to 45 V
3 Description
The DRV8872 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 DRV8872 features integrated current regulation,
based on an internal reference voltage and the
voltage on pin ISEN, 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 under-voltage (UVLO), over-current
(OCP), and over-temperature (TSD). Faults are
communicated by pulling the nFAULT output low.
When the fault condition is removed, the device
automatically resumes normal operation.
Device Information ⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DRV8872
HSOP (8)
4.90 mm × 6.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
H-Bridge States
Controller
DRV8872
3.6 A
IN1
IN2 _{Brushed DC}
BDC
Motor Driver
nFAULT
Current
Regulation
Fault
Protection and
Reporting
ISEN
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.