DRV8825 Datasheet PDF – Stepper Motor Controller IC – TI

Part Number: DRV8825, DRV8825PWPR

Function: Stepper Motor Controller IC

Package: HTSSOP 28 Pin Type

Manufacturer: Texas Instruments

Image

drv8825-stepper-motor-controller

Description

The DRV8825 provides an integrated motor driver solution for printers, scanners, and other automated equipment applications. The device has two H-bridge drivers and a microstepping indexer, and is intended to drive a bipolar stepper motor. The output driver block consists of N-channel power MOSFET’s configured as full H-bridges to drive the motor windings.

The DRV8825 is capable of driving up to 2.5 A of current from each output (with proper heat sinking, at 24 V and 25°C).

 

Pinout

drv8825-datasheet-pinout

 

Features

1. PWM Microstepping Stepper Motor Driver

(1) Built-In Microstepping Indexer
(2) Up to 1/32 Microstepping

2. Multiple Decay Modes

(1) Mixed Decay
(2) Slow Decay
(3) Fast Decay

3. 8.2-V to 45-V Operating Supply Voltage Range

4. 2.5-A Maximum Drive Current at 24 V and TA = 25°C

5. Simple STEP/DIR Interface

6. Low Current Sleep Mode

Circuit

drv8825-circuit

Applications:

1. Automatic Teller Machines

2. Money Handling Machines

3. Video Security Cameras

4. Office Automation Machines

 

Official Homepage: https://www.ti.com/product/DRV8825

Reference Site:

1. https://www.pololu.com/product/2133

2. https://reprap.org/wiki/DRV8825

3. https://github.com/laurb9/StepperDriver

 

DRV8825 Datasheet PDF


 

 

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OZ9972ASN Datasheet PDF – LCD TV Controller – O2Micro

Part Number: OZ9972ASN

Function: High Power LCD TV Controller

Package: SOP 24 Pin Type

Manufacturer: O2Micro

Image OZ9972ASN

Description

OZ9972, OZ9972ASN are high performance, Pulse Width Modulation (PWM) controllers designed for large-size LCD TV applications requiring multiple lamps. They achieve high efficiency power conversion with minimal switching loss in a PWM, full-bridge, N-Channel MOSFET topology.

0Z9972, 0Z9972A provide high drive capability, support a wide input range, and provide a constant, user-defined operating frequency.

Features

• OZ9972 : System synchronization for dimming and operation frequency

• Full-bridge topology

• Integrated high side N-MOSFET driver

• High drive capability and soft start function

• Constant operating frequency

• Built-in intelligence to manage lamp ignition and normal operation of CCFLs

• Open-lamp, over-voltage, over-current, and under-voltage lockout protection

• User-defined striking and shutdown delay timers

• Soft start function

Block Diagram :

OZ9972ASN Pinout

 

OZ9972ASN Datasheet

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