Motor Driver. DRV8808 Datasheet

DRV8808 Driver. Datasheet pdf. Equivalent

Part DRV8808
Description Combination Motor Driver
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DRV8808
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
DRV8808
SLVS857B – DECEMBER 2009 – REVISED JANUARY 2015
DRV8808 Combination Motor Driver With DC-DC Converter
1 Features
1 Three DC Motor Drivers
– Up to 2.5-A Current Chopping
– Low Typical ON Resistance (RDSON = 0.5 at
TJ = 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 VM 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
2 Applications
• Printers
• Document Scanners
• POS
• Copiers
3 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.
PART NUMBER
DRV8808
Device Information(1)
PACKAGE
BODY SIZE (NOM)
HTSSOP (48)
12.50 mm x 6.10 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Typical Application Schematic
VIN
VM
OD_A
FBA
OD_B
FBB
OD_C
FBC
LDO_IN
LDO_OUT
DC/DC
convertor
Ch-A
VM
Motor Drive
Output
Control A
DC/DC
convertor
Ch-B
Motor Drive
Output
Control B
DC/DC
convertor
Ch-C
LDO
Regulator
Motor Drive
Output
Control C
A+
VM
DC
Motor
A-
RSA Optional
B+
VM
DC
Motor
B-
RSB Optional
C+
VM
DC
Motor
C-
RSC Optional
LDO_FB
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.



DRV8808
DRV8808
SLVS857B – DECEMBER 2009 – REVISED JANUARY 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 6
6.1 Absolute Maximum Ratings ..................................... 6
6.2 ESD Ratings.............................................................. 6
6.3 Recommended Operating Conditions....................... 6
6.4 Thermal Information .................................................. 6
6.5 Electrical Characteristics........................................... 7
6.6 Typical Characteristics ............................................ 11
7 Detailed Description ............................................ 12
7.1 Overview ................................................................. 12
7.2 Functional Block Diagram ....................................... 13
7.3 Feature Description................................................. 14
7.4 Device Functional Modes........................................ 32
7.5 Programming........................................................... 32
8 Application and Implementation ........................ 36
8.1 Application Information............................................ 36
8.2 Typical Application ................................................. 36
9 Power Supply Recommendations...................... 38
10 Layout................................................................... 38
10.1 Layout Guidelines ................................................. 38
10.2 Layout Example .................................................... 38
11 Device and Documentation Support ................. 39
11.1 Trademarks ........................................................... 39
11.2 Electrostatic Discharge Caution ............................ 39
11.3 Glossary ................................................................ 39
12 Mechanical, Packaging, and Orderable
Information ........................................................... 39
4 Revision History
Changes from Revision A (August 2011) to Revision B
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section .................................................................................................. 1
2
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