DRV8873 Texas instruments

DRV8873

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DRV8873

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Описание

The DRV8873 device is an integrated driver IC for driving a brushed DC motor in industrial applications. Two logic inputs control the H-bridge driver, which consists of four N-channel MOSFETs that drive motors bi-directionally with up to 10-A peak current. The device operates from a single power supply and supports a wide input supply range from 4.5 V to 38 V.A PH/EN or PWM interface allows simple interfacing to controller circuits. Alternatively, independent half-bridge control is available to drive two solenoid loads. A current mirror allows the controller to monitor the load current. This mirror approximates the current through the high-side FETs, and does not require a high-power resistor for sensing the current.A low-power sleep mode is provided to achieve very-low quiescent current draw by shutting down much of the internal circuitry. Internal protection functions are provided for undervoltage lockout, charge pump faults, overcurrent protection, short-circuit protection, open-load detection, and overtemperature. Fault conditions are indicated on an nFAULT pin and through the SPI registers.

H-Bridge Motor Driver
- Drives One DC Motor, One Winding of a Stepper Motor, or Solenoid Loads
4.5-V to 38-V Operating Voltage Range
10-A Peak Current Drive
Low HS + LS R_DS(ON)
- 150 mΩ at T_J = 25°C, 13.5 V
- 250 mΩ at T_J = 150°C, 13.5 V
Current Mirror for Output Current Sensing
Configurable Control Interface
- PH/EN
- PWM (IN1/IN2)
- Independent Half-Bridge Control
Supports 1.8-V, 3.3-V, 5-V Logic Inputs
SPI or Hardware Interface Options
Low-Power Sleep Mode (10 µA)
Small Package and Footprint
- 24 HTSSOP PowerPAD™ IC Package
Protection Features
- VM Undervoltage Lockout (UVLO)
- Charge Pump Undervoltage (CPUV)
- Overcurrent Protection (OCP)
- Output short to battery and short to ground protection
- Open Load Detection
- Thermal Shutdown (TSD)
- Fault Condition Output (nFAULT / SPI)

Number of full bridges	1
Vs (min) (V)	4.5
Vs ABS (max) (V)	40
Peak output current (A)	10
RDS(ON) (HS + LS) (mΩ)	150
Sleep current (µA)	15
Control mode	Independent 1/2-Bridge, PH/EN, PWM
Control interface	Hardware (GPIO), SPI
Features	Current sense Amplifier, Integrated Current Sensing, Open-Load Detection
Rating	Catalog
Operating temperature range (°C)	-40 to 125