5140

SENSOR:

LAMP/SOLENOID DRIVER

The UGQ5140K unipolar Hall effect switch is a monolithic

integrated circuit designed for magnetic actuation of low-power

incandescent lamps or inductive loads such as relays or solenoids.

Included on chip is a Darlington power output that is capable of con-

tinuously sinking in excess of 300 mA. Internal protection circuitry

limits surge (lamp turn-ON) or fault currents to approximately 900 mA.

A sensitive magnetic threshold allows the device to be used in con-

junction with inexpensive magnets or in applications that require

relatively large operating distances.

Each sensor/driver includes a magnetic sensing Hall voltage

generator, operational amplifier, Schmitt trigger, voltage regulator, and

an open-collector, high-gain Darlington power output stage. The

regulator allows use of the device with supply voltages of 4.5 V to

28 V. On-chip compensation circuitry stabilizes switch-point perfor-

mance over temperature. The magnetic operation of this device is

similar to that of the A3141E— Hall-effect switch.

The sensitive magnetic switch point coupled with the power output,

current limiting, and thermal limiting circuitry allow the UGQ5140K to

magnetically actuate various loads without requiring any external

components.

The UGQ5140K is rated for operation over an extended tempera-

ture range of -40

°C to +85°C. It is supplied in a four-pin mini-SIP

plastic package, 0.200" (5.08 mm) wide, 0.130" (3.30 mm) high, and

0.060" (1.54 mm) thick.

FEATURES

s Magnetically Actuated Power Switch

s Temperature-Compensated Switch Points

s High Current-Sink Capability

300 mA Continuous

900 mA Peak Current Limit

s Output Short-Circuit Protection

s Low Quiescent Standby Current

s Linear Thermal Limiting

s Automotive Temperature Range

-40

°C to +85°C, Operating

s Internal Inductive Flyback/Clamp Diode Protection

s Reverse Battery Protection

s Low-Profile 4-Pin Mini-SIP

5140

— LAMP/SOLENOID DRIVER

Always order by complete part number: UGQ5140K .

Pinning is shown viewed from branded side.

Dwg. PH-001

X

1

V

CC

23

4

ABSOLUTE MAXIMUM RATINGS

Over-Current Protected Output Voltage,

Magnetic Flux Density, B . . . . . . Unlimited

Package Power Dissipation,

Operating Temperature Range,

Storage Temperature Range,

* Output is current limited at approximately 900

mA and junction temperature limited if current in

excess of 900 mA is attempted. See Circuit

Description and Applications for further

information.