DRV8843 Texas instruments

DRV8843

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DRV8843

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Описание

The DRV8843 provides an integrated dual H-bridge motor driver solution for printers, scanners, and other automated equipment applications. The device can be used to drive one or two brushed DC motors, a bipolar stepper motor, or other loads. A simple PWM interface allows easy interfacing to controller circuits. The output driver block consists of N-channel power MOSFETs configured as H-bridges. The DRV8843 an supply up to 2.5-A peak or 1.75-A RMS output current (with proper heat sinking at 24 V and TA = 25°C) per H-bridge. 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 using a dedicated nSLEEP pin. Internal protection features are provided for overtemperature, overcurrent, and undervoltage. Fault conditions are indicated by a nFAULT pin.

Dual H-Bridge Motor Driver
- Single/Dual Brushed DC
- Stepper
IN/IN Control Interface
Optional Fixed Frequency Current Regulation
- Two Bit Current control Allows Up to
  Four Current Levels
Low MOSFET On-Resistance
- 2.5-A Maximum Drive Current at 24 V
  and T_A = 25°C
- Combined 400 mΩ R_DS(ON) of High-Side
  and Low-Side at 24 V and T_A = 25°C
8.2-V to 45-V Operating Supply Voltage Range
Low Current Sleep Mode
Built-In 3.3-V Reference Output
Thermally Enhanced Surface Mount Package
Protection Features
- Overcurrent Protection (OCP)
- Thermal Shutdown (TSD)
- Undervoltage Lockout (UVLO)
- Fault Condition Indication Pin (nFAULT)

Number of full bridges	2
Vs (min) (V)	8.2
Vs ABS (max) (V)	47
Full-scale current (A)	2.5
Peak output current (A)	3
RDS(ON) (HS + LS) (mΩ)	400
Sleep current (µA)	10
Control mode	PWM
Control interface	Hardware (GPIO)
Microstepping levels	4
Features	Current Regulation
Rating	Catalog
Operating temperature range (°C)	-40 to 85