DRV777 Datasheet, PDF (1/17 Pages) Texas Instruments – 7- bit Integrated Motor and Relay Driver

DRV777
www.ti.com
SLRS062 – DECEMBER 2012
7- bit Integrated Motor and Relay Driver
Check for Samples: DRV777
FEATURES
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• Supports up to 20V Output Pull-up Voltage
• –40°C to 125°C Operating Temperature Range
• Supports Wide Range of Stepper Motors, DC
Motors, Relays, and Inductive Coils
• Low Output VOL of 0.4V (Typical) With
– 140mA Current Sink per Channel at 5.0V
Logic Input⁽¹⁾
– 1A Current Output when all 7 Channels
Tied in Parallel⁽¹⁾
• Compatible to 1.8V, 3.3V and 5.0V Micro-
controllers and Logic Interface
• Internal Free-wheeling Diodes for Inductive
Kick-back Protection
• Input Pull-down Resistors Allows Tri-stating
the Input Driver
• Input RC-Snubber to Eliminate Spurious
Operation in Noisy Environment
• Low Input and Output Leakage Currents
• Easy to use Parallel Interface
• ESD Protection Exceeds JESD 22
– 2kV HBM, 500V CDM
• Available in 16-pin SOIC and TSSOP Packages
(1) _{Total current sink may be limited by the internal junction}
temperature, absolute maximum current levels etc - refer to
the Electrical Specifications section for details.
APPLICATIONS
• Unipolar Stepper Motor Drivers
• Relay and Inductive Load Drivers
• Solenoid Drivers
• Lamp and LED Displays
• Logic Level Shifter
• General Low-Side Switch Applications
Functional Diagram
IN1 1
IN2 2
IN3 3
IN4 4
IN5 5
IN6 6
IN7 7
GND 8
16 OUT1
15 OUT2
14 OUT3
13 OUT4
12 OUT5
11 OUT6
10 OUT7
9 COM
DRV777 TSSOP/SOIC
DESCRIPTION
DRV777 motor driver features 7 low output
impedance drivers that minimize on-chip power
dissipation. DRV777 supports 1.8V to 5V CMOS logic
input interface thus making it compatible to a wide
range of micro-controllers and other logic interfaces.
DRV777 features an improved input interface that
minimizes the input DC current drawn from the
external drivers. Device also features an input RC
snubber that greatly improves its performance in
noisy operating conditions. All channel inputs feature
an internal input pull-down resistor thus allowing input
logic to be tri-stated. DRV777 also supports other
logic input levels, e.g. TTL and 1.8V; see typical
characteristics section for details.
As shown in the Functional Diagram, each output of
the DRV777 features an internal free-wheeling diode
connected in a common-cathode configuration at the
COM pin.
Device provides flexibility of increasing current sink
capability through combining several adjacent
channels in parallel. Under typical conditions DRV777
can support up to 1.0A of load current when all 7-
channels are connected in parallel. DRV777 is
available in 16-pin SOIC and 16-pin TSSOP
packages.
Table 1. DRV777 Function Table⁽¹⁾
INPUT (IN1 – IN7)
L
OUTPUT (OUT1–OUT7)
H⁺⁽²⁾
H
L
Z
H⁺⁽²⁾
(1) L = Low-level (GND); H= High-level; Z= High-impedance;
(2) H⁺ = Pull-up-level
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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 © 2012, Texas Instruments Incorporated