DRV8808中文资料具有 DC-DC 转换器的组合电机驱动器数据手册TI规格书

描述 Description

The DRV8808 device provides the integrated motor driver solution for printers. The chip has three full H-bridges and three buck DC-DC converters.
The output driver block for each consists of N-channel power MOSFETs configured as full H-bridges to drive the motor windings. The device can be configured to use internal or external current sense for winding current control.
The SPI input pins are 3.3-V compatible and have inputs that are 5-V tolerant.
The DRV8808 has three DC-DC switched-mode buck converters to generate a programmable output voltage from 1 V up to 90% of VM, with up to 1.35-A load current capability.
The device is configured using the CSELECT terminal at start-up, and serial interface during run time.
An internal shutdown function is provided for overcurrent protection, short-circuit protection, undervoltage lockout, and thermal shutdown. Also, the device has the reset function at power on, and the input on the nReset pin.

特性 Features

• Three DC Motor Drivers
• Low Typical ON Resistance (RDSON = 0.5 Ω at TJ = 25°C)
• Three Integrated DC-DC Converters
• Outputs Configurable With External Resistor Network From 1 V to 90% of VM Capability for All Three Channels
• One Integrated LDO Regulator
• 550-mA Output Capability
• 7-V to 40-V Operating Range
• Thermally Enhanced Surface-Mount Package 48-Pin HTSSOP With PowerPAD (Eco-Friendly: RoHS and No Sb/Br )
• Reset Signal Output (Active Low)
• Reset (All Clear) Control Input
PowerPAD is a trademark of Texas Instruments. All other trademarks are the property of their respective owners