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Product Detailed Parameters
- Description：IC PWR RELAY NPN 1:1 16SOIC
- Series：ULx200xA
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Transistor Type：-
- Current - Collector (Ic) (Max)：-
- Voltage - Collector Emitter Breakdown (Max)：-
- Vce Saturation (Max) @ Ib, Ic：-
- Current - Collector Cutoff (Max)：-
- DC Current Gain (hFE) (Min) @ Ic, Vce：-
- Power - Max：-
- Frequency - Transition：-
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：16-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：16-SOIC
- Grade：-
- Qualification：-
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Overview
The ULN2003V12DR is a seven-channel relay and inductive load sink driver manufactured by Texas Instruments. It integrates seven NPN Darlington pairs, each with an integrated cathode clamp diode for inductive load protection. The device supports low-voltage relays from 1.8 V to 5 V and features a CMOS logic input interface compatible with microcontrollers. Key electrical parameters include a maximum continuous collector current of 140 mA per channel, a supply voltage range of 3.3 V to 5 V, and an operating temperature range of -40°C to +125°C. It is housed in a 16-pin TSSOP package.
Feature Summary
- Fully integrated seven-channel architecture designed for low-voltage relay and inductive load applications
- CMOS logic input interface compatible with a wide range of microcontrollers and logic interfaces
- Integrated cathode clamp diodes provide protection against reverse electromotive force from inductive loads
Applications
- Driving data relays and rails within telecommunications equipment
- Low-voltage relay control systems requiring reduced board space
- Inductive load switching in consumer electronics
Procurement Notes
Verify the specific suffix DR indicates tape-and-reel packaging when sourcing. Confirm the manufacturer is Texas Instruments, as other vendors produce similar part numbers with different specifications. Ensure the order matches the 16-pin TSSOP form factor required for the target PCB layout.
Selection Notes
Select this component for designs requiring low-side switching of 1.8 V to 5 V relays. It replaces discrete components to reduce board space by up to 80 percent. Verify that the 140 mA output current meets the load requirements, as it differs from the standard ULN2003's 500 mA capability.
Part Context
This part belongs to the ULN2003 family of high-voltage, high-current Darlington arrays. While the standard ULN2003 supports higher voltages and currents, the V12 variant is optimized for lower voltage operation (1.8 V to 5 V) and modern surface-mount assembly. It serves as a direct interface between digital logic controllers and analog loads.
Replacement Considerations
The ULN2003V12DR is functionally equivalent to the ULN2003V12PWR in terms of electrical performance. Both are seven-channel drivers from Texas Instruments. Verify pin compatibility if substituting between TSSOP and other packages.
