ULN2823LW Allegro MicroSystems Darlington Array Data Sheet

Description

This PDF datasheet is for the Allegro ULN2823LW Darlington Array.

Allegro MicroSystems ULN2823LW High-Voltage High-Current Darlington Array

Featuring continuous load current ratings to 500 mA for each of the drivers, the Series ULN28xxLW highvoltage, high-current Darlington arrays are ideally suited for interfacing between low-level logic circuitry and multiple peripheral power loads. Typical power loads totaling over 260 W (350 mA x 8, 95 V) can be controlled at an appropriate duty cycle depending on ambient temperature and number of drivers turned ON simultaneously. Typical loads include relays, solenoids, stepping motors, magnetic print hammers, multiplexed LED and incandescent displays, and heaters. All devices feature open-collector outputs with integral clamp diodes.
The ULN2823LW have series input resistors selected for operation directly with 5 V TTL or CMOS. These devices will handle numerous interface needs – particularly those beyond the capabilities of standard logic buffers.
The ULx2823LW will withstand 95 V in the OFF state.
These Darlington arrays are furnished in 18-lead small-outline plastic packages (suffix “LW”). All devices are pinned with outputs opposite inputs to facilitate ease of circuit board layout. Prefix “ULN” devices are rated for operation over the temperature range of -20 deg C to +85 deg C.

(PDF) DATASHEET (ENGLISH)

CONTENTS

INTERNAL DIAGRAM

PINOUT

ABSOLUTE MAXIMUM RATINGS
– Output Voltage
– Input Voltage
– Continuous Output Current
– Continuous Input Current
– Power Dissipation
– Operating Temperature Range
– Storage Temperature Range

FEATURES

DEVICE PART NUMBER DESIGNATION

PARTIAL SCHEMATICS

ELECTRICAL CHARACTERISTICS

TEST FIGURES

ALLOWABLE COLLECTOR CURRENT AS A FUNCTION OF DUTY CYCLE

INPUT CURRENT AS A FUNCTION OF INPUT VOLTAGE

SATURATION VOLTAGE AS A FUNCTION OF COLLECTOR CURRENT

COLLECTOR CURRENT AS A FUNCTION OF INPUT CURRENT

Why download the Datasheet?

This datasheet provides all the information from Allegro MicroSystems about the ULN2823LW Darlington Array, as detailed in the table of contents. Reading it completely will address most questions you might have. You can download and save it for offline use, including viewing it on your device or printing it for your convenience if you prefer a paper version.

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