DRV104_16 Datasheet, PDF (1/26 Pages) Texas Instruments – 1.2A PWM High-Side Driver for Solenoids, Coils, Valves, Heaters, and Lamps

DRV104
DRV104 ®
SBVS036B – SEPTEMBER 2003 – REVISED MARCH 2006
1.2A PWM High-Side Driver
for Solenoids, Coils, Valves, Heaters, and Lamps
FEATURES
q HIGH OUTPUT DRIVE: 1.2A
q WIDE SUPPLY RANGE: +8V to +32V
q COMPLETE FUNCTION:
PWM Output
Adjustable Internal Oscillator: 500Hz to 100kHz
Digitally Controlled Input
Adjustable Delay and Duty Cycle
Over-Current Indicator Flag
q FULLY PROTECTED:
Thermal Shutdown with Indicator Flag
Internal Current Limit
q PACKAGE: HTSSOP-14 Surface-Mount PowerPAD™
APPLICATIONS
q ELECTROMECHANICAL DRIVERS:
Solenoids, Valves, Positioners, Actuators, Relays,
Power Contactor Coils, Heaters, and Lamps
q FLUID AND GAS FLOW SYSTEMS
q FACTORY AUTOMATION
q PART HANDLERS AND SORTERS
q PHOTOGRAPHIC PROCESSING
q ENVIRONMENTAL MONITORING AND HVAC
q THERMOELECTRIC COOLERS
q MOTOR SPEED CONTROLS
q SOLENOID PROTECTORS
DRV104
q MEDICAL ANALYZERS
DESCRIPTION
The DRV104 is a DMOS, high-side power switch employing
a pulse-width modulated (PWM) output. Its rugged design is
optimized for driving electromechanical devices such as
valves, solenoids, relays, actuators, and positioners. It 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.
Time from dc-to-PWM output and oscillator frequency are
externally adjustable.
Separate supply pins for the circuit and driver transistor allow
the output to operate on a different supply than the rest of the
circuit.
The DRV104 can be set to provide a strong initial solenoid
closure, automatically switching to a soft hold mode for
power savings. The duty cycle can be controlled by a
resistor, analog voltage, or a digital-to-analog (D/A) converter
for versatility. The Status OK Flag pin indicates when thermal
shutdown or over-current occurs.
The DRV104 is specified for –40°C to +85°C at its case. The
exposed lead frame must be soldered to the circuit board.
Thermal Shutdown
Over/Under Current
Status OK
Flag
+V_S
V_REF
Oscillator
+V_PS1
+V_PS2
Input
PWM
On
Off
Delay
OUT1
OUT2
Delay Osc Freq Duty Cycle
Adj
Adj
Adj
GND
BOOT
Coil
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. All other trademarks are the property of their respective owners.
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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