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DRV8701
SLVSCX5B –MARCH 2015–REVISED JULY 2015
DRV8701 Brushed DC Motor Full-Bridge Gate Driver
1 Features
2 Applications
1
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Single H-Bridge Gate Driver
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Industrial Brushed-DC Motors
Robotics
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Drives Four External N-Channel MOSFETs
Supports 100% PWM Duty Cycle
Home Automation
Industrial Pumps and Valves
Power Tools
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5.9-V to 45-V Operating Supply Voltage Range
Two Control Interface Options
Handheld Vacuum Cleaners
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PH/EN (DRV8701E)
PWM (DRV8701P)
3 Description
The DRV8701 is a single H-bridge gate driver that
uses four external N-channel MOSFETs targeted to
drive a 12-V to 24-V bidirectional brushed DC motor.
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Adjustable Gate Drive (5 Levels)
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6-mA to 150-mA Source Current
12.5-mA to 300-mA Sink Current
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Supports 1.8-V, 3.3-V, and 5-V Logic Inputs
Current Shunt Amplifier (20 V/V)
A
PH/EN (DRV8701E) or PWM (DRV8701P)
interface allows simple interfacing to controller
circuits. An internal sense amplifier allows for
adjustable current control. The gate driver includes
circuitry to regulate the winding current using fixed
off-time PWM current chopping.
Integrated PWM Current Regulation
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Limits Motor Inrush Current
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Low-Power Sleep Mode (9 μA)
Two LDO Voltage Regulators to Power External
Components
DRV8701 drives both high- and low-side FETs with
9.5-V VGS gate drive. The gate drive current for all
external FETs is configurable with a single external
resistor on the IDRIVE pin.
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AVDD: 4.8 V, up to 30-mA Output Load
DVDD: 3.3 V, up to 30-mA Output Load
A low-power sleep mode is provided which shuts
down internal circuitry to achieve very-low quiescent
current draw. This sleep mode can be set by taking
the nSLEEP pin low.
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Small Package and Footprint
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24-Pin VQFN (PowerPAD™)
4.0 × 4.0 × 0.9 mm
Protection Features:
Internal
undervoltage
overcurrent
protection
functions
charge
are
pump
provided:
faults,
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VM Undervoltage Lockout (UVLO)
Charge Pump Undervoltage (CPUV)
Overcurrent Protection (OCP)
Pre-Driver Fault (PDF)
lockout,
shutdown,
short-circuit
protection,
predriver faults, and overtemperature. Fault
conditions are indicated on the nFAULT pin.
Device Information(1)
Thermal Shutdown (TSD)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
Fault Condition Output (nFAULT)
DRV8701
VQFN (24)
4.00 × 4.00 x 0.90 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
SPACE
Gate-Drive Current
tDRIVE
Simplified System Block Diagram
IHOLD
High-side
gate drive
5.9V to 45 V
IHOLD
IHOLD
current
DRV8701
High-side
VGS
PH/EN or PWM
nSLEEP
Gate
drive
FETs
M
H-Bridge Gate
Driver
tDRIVE
VREF
Controller
IHOLD
IHOLD
Low-side
gate drive
current
sense
sense output
nFAULT
Shunt Amp
Protection
LDO
IHOLD
Low-side
VGS
3.3 & 4.8 V
30 mA
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.