DRV8808 Datasheet, PDF (1/38 Pages) Texas Instruments – COMBINATION MOTOR DRIVER WITH DC-DC CONVERTER

DRV8808
www.ti.com
SLVS857A – DECEMBER 2009 – REVISED AUGUST 2011
COMBINATION MOTOR DRIVER WITH DC-DC CONVERTER
Check for Samples: DRV8808
FEATURES
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•2 Three DC Motor Drivers
– Up to 2.5-A Current Chopping
– Low Typical ON Resistance (R_DSON = 0.5 Ω
at T_J = 25°C)
• Three Integrated DC-DC Converters
– ON/OFF Selectable Using CSELECT Pin
and Serial Interface
– Outputs Configurable With External
Resistor Network From 1 V to 90% of V_M
Capability for All Three Channels
– 1.35-A Output Capability for All Three
Channels
• One Integrated LDO Regulator
– Output Configurable With External Resistor
Network from 1 V to 2.5 V
– 550-mA Output Capability
• 7-V to 40-V Operating Range
• Serial Interface for Communications
• Thermally-Enhanced Surface-Mount Package
48-Pin HTSSOP With PowerPAD™
(Eco-Friendly: RoHS and No Sb/Br )
• Power-Down Function (Deep-Sleep Mode)
• Reset Signal Output (Active Low)
• Reset (All Clear) Control Input
DESCRIPTION
The DRV8808 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 utilize internal or external current sense for winding current
control.
The SPI input pins are 3.3-V compatible and have 5-V-tolerant inputs.
The DRV8808 has three dc-dc switch-mode buck converters to generate a programmable output voltage from
1 V up to 90% of V_M, 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 nReset pin.
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2009–2011, Texas Instruments Incorporated