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ULN2003A PDIP (N)-16,SOIC (D)-16,SOP (NS)-16,TSSOP (PW)-16

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See Technical Specifications

ULN2003A

Darlington Transistors Seven NPN Array

Manufacturer:

Texas Instruments
Mfr.Part #:

ULN2003A
Datasheet:

ULN2003A Datasheet (PDF)
Switching voltage (max) (V):

50
Output voltage (max) (V):

50
Peak output current (A):

0.5
Delay time (typ) (ns):

250
EDA/CAD Models:

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ULN2003A General Description

The ULx200xA devices are high-voltage, high-current Darlington transistor arrays. Each consists of seven NPN Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for switching inductive loads.

The collector-current rating of a single Darlington pair is 500 mA. The Darlington pairs can be paralleled for higher current capability. Applications include relay drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers, and logic buffers. For 100-V (otherwise interchangeable) versions of the ULx2003A devices, see the SLRS023 data sheet for the SN75468 and SN75469 devices.

The ULN2002A device is designed specifically for use with 14-V to 25-V PMOS devices. Each input of this device has a Zener diode and resistor in series to control the input current to a safe limit. The ULx2003A devices have a 2.7-kΩ series base resistor for each Darlington pair for operation directly with TTL or 5-V CMOS devices.

The ULx2004A devices have a 10.5-kΩ series base resistor to allow operation directly from CMOS devices that use supply voltages of 6 V to 15 V. The required input current of the ULx2004A device is below that of the ULx2003A devices, and the required voltage is less than that required by the ULN2002A device.

Key Features

Seven Darlingtons per package
Output current 500 mA per driver (600 mA peak)
Output voltage 50 V
Integrated suppression diodes for inductive loads
Outputs can be paralleled for higher current
TTL/CMOS/PMOS/DTL compatible inputs
Input pins placed opposite to output pins to simplify layout

Application

Relay Driver
Stepping Motor Driver
Home Appliance
Industrial Application

Specifications

Switching voltage (max) (V)	50	Output voltage (max) (V)	50
Peak output current (A)	0.5	Delay time (typ) (ns)	250
Input compatibility	CMOS, TTL	Vol at lowest spec current (typ) (mV)	900
Iout/ch (max) (mA)	500	Iout_off (typ) (µA)	50
Rating	Catalog	Operating temperature range (°C)	-40 to 70
FET	Internal	Imax (A)	0.5
Device type	Low-side switches	Function	Automotive load dump compatibility, Inductive load compatibility