DRV103UG4 Datasheet, PDF (1/24 Pages) Burr-Brown (TI) – PWM LOW-SIDE DRIVER (1.5A and 3A) for Solenoids, Coils, Valves, Heaters, and Lamps

DRV103
DRV103
DRV103
SBVS029A – JUNE 2001
PWM LOW-SIDE DRIVER (1.5A and 3A)
for Solenoids, Coils, Valves, Heaters, and Lamps
FEATURES
DESCRIPTION
q HIGH OUTPUT DRIVE: 1.5A and 3A Versions
q WIDE SUPPLY RANGE: +8V to +32V
q COMPLETE FUNCTION
Digitally Controlled Input
PWM Output
Adjustable Internal Oscillator: 500Hz to 100kHz
Adjustable Delay and Duty Cycle
q FULLY PROTECTED
Thermal and Current Limit Shutdown with
Status OK Indicator Flag
q PACKAGES: SO-8 and PowerPAD™ SO-8
APPLICATIONS
q ELECTROMECHANICAL DRIVER:
Solenoids, Valves, Positioners, Actuators,
Relays, Power Contactor Coils, Heaters, Lamps
q HYDRAULIC AND PNEUMATICS SYSTEMS
q PART HANDLERS AND SORTERS
q CHEMICAL PROCESSING
q ENVIRONMENTAL MONITORING AND HVAC
q THERMOELECTRIC COOLERS
q DC MOTOR SPEED CONTROLS
q MEDICAL AND SCIENTIFIC ANALYZERS
q FUEL INJECTOR DRIVERS
PowerPAD is a trademark of Texas Instruments.
The DRV103 is a low-side DMOS power switch employing
a pulse-width modulated (PWM) output. Its rugged design is
optimized for driving electromechanical devices such as
valves, solenoids, relays, actuators, motors, and positioners.
The DRV103 is also ideal for driving thermal devices such
as heaters, coolers, and lamps. PWM operation conserves
power and reduces heat rise, resulting in higher reliability. In
addition, adjustable PWM allows fine control of the power
delivered to the load. DC-to-PWM output delay time and
oscillator frequency are also externally adjustable.
The DRV103 can be set to provide a strong initial closure,
automatically switching to a “soft” hold mode for power
savings. A resistor, analog voltage, or Digital-to-Analog
(D/A) converter can control the duty cycle. An output OK flag
indicates when thermal shutdown or over current occurs.
Two packages provide a choice of output current:
1.5A (SO-8) or 3A (PowerPAD™ SO-8 with exposed metal
heat sink).
The DRV103 is specified for –40°C to +85°C.
Status OK
Flag
+V_S
DRV103
Thermal Shutdown
Over Current
V_REF
Oscillator
DMOS
ESD
OUT
Flyback
Diode
Load
DMOS
Input
PWM
On
Off
Delay
Delay
Adj
C_D
Osc Freq
Adj
R_FREQ
Duty Cycle
Adj
R_PWM
GND
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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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Copyright © 2001, Texas Instruments Incorporated