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DRV8874 데이터시트 (PDF) - Texas Instruments

DRV8874 Datasheet PDF - Texas Instruments
부품명 DRV8874
다운로드  DRV8874 다운로드
파일 크기   2476.07 Kbytes
페이지   42 Pages
제조업체  TI2 [Texas Instruments]
홈페이지  https://www.ti.com
Logo TI2 - Texas Instruments
상세설명 DRV8874 H-Bridge Motor Driver With Integrated Current Sense and Regulation

DRV8874 Datasheet (PDF)

Go To PDF Page 다운로드 데이터시트
DRV8874 Datasheet PDF - Texas Instruments

부품명 DRV8874
다운로드  DRV8874 Click to download

파일 크기   2476.07 Kbytes
페이지   42 Pages
제조업체  TI2 [Texas Instruments]
홈페이지  https://www.ti.com
Logo TI2 - Texas Instruments
상세설명 DRV8874 H-Bridge Motor Driver With Integrated Current Sense and Regulation

DRV8874 데이터시트 (HTML) - Texas Instruments


DRV8874 제품 세부 정보

1 Features
1• N-channel H-bridge motor driver
– Drives one bidirectional brushed DC motor
– Two unidirectional brushed DC motors
– Other resistive and inductive loads
• 4.5-V to 37-V operating supply voltage range
• Pin to pin RDS(on) variants
– DRV8874: 200-mΩ (High-Side + Low-Side)
– DRV8876: 700-mΩ (High-Side + Low-Side)
• High output current capability
– DRV8874: 6-A Peak
– DRV8876: 3.5-A Peak
• Integrated current sensing and regulation
• Proportional current output (IPROPI)
• Selectable current regulation (IMODE)
– Cycle-by-cycle or fixed off time
• Selectable input control modes (PMODE)
– PH/EN and PWM H-bridge control modes
– Independent half-bridge control mode
• Supports 1.8-V, 3.3-V, and 5-V logic inputs
• Ultra low-power sleep mode
– <1-μA @ VVM = 24-V, TJ = 25°C
• Spread spectrum clocking for low electromagnetic
interference (EMI)
• Integrated protection features
– Undervoltage lockout (UVLO)
– Charge pump undervoltage (CPUV)
– Overcurrent protection (OCP)
– Automatic retry or outputs latched off
(IMODE)
– Thermal shutdown (TSD)
– Automatic fault recovery
– Fault indicator pin (nFAULT)

2 Applications
• Brushed DC motors
• Major and small home appliances
• Vacuum, humanoid, and toy robotics
• Printers and scanners
• Smart meters
• ATMs, currency counters, and EPOS
• Servo motors and actuators

3 Description
The DRV8874 is an integrated motor driver with Nchannel
H-bridge, charge pump, current sensing and
proportional output, current regulation, and protection
circuitry. The charge pump improves efficiency by
supporting N-channel MOSFET half bridges and
100% duty cycle driving. The family of devices come
in pin-to-pin RDS(on) variants to support different loads
with minimal design changes.
An internal current mirror architecture on the IPROPI
pin implements current sensing and regulation. This
eliminates the need for a large power shunt resistor,
saving board area and reducing system cost. The
IPROPI current-sense output allows a microcontroller
to detect motor stall or changes in load conditions.
Using the external voltage reference pin, VREF,
these devices can regulate the motor current during
start-up and high-load events without interaction from
a microcontroller.
A low-power sleep mode achieves ultra-low quiescent
current draw by shutting down most of the internal
circuitry. Internal protection features include supply
undervoltage lockout, charge pump undervoltage,
output overcurrent, and device overtemperature.
Fault conditions are indicated on nFAULT.
View our full portfolio of brushed motor drivers on
ti.com.




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