DRV104

SBVS036B – SEPTEMBER 2003 – REVISED MARCH 2006

www.ti.com

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.

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™

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.

Copyright © 2003-2006, Texas Instruments Incorporated

1.2A PWM High-Side Driver

for Solenoids, Coils, Valves, Heaters, and Lamps

Delay

Adj

Input

On

Off

Thermal Shutdown

Over/Under Current

Status OK

Flag

+V

S

Coil

OUT2

BOOT

Oscillator

V

REF

PWM

Osc Freq

Adj

Duty Cycle

Adj

GND

Delay

DRV104

OUT1

+V

+V

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

q MEDICAL ANALYZERS

®

DRV1

04

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.