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Product Detailed Parameters
- Description：IC PWR RELAY 7NPN 1:1 16TSSOP
- 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 ~ 105°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：16-TSSOP
- Grade：-
- Qualification：-
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Overview
The ULN2003BPWR is a high-voltage, high-current Darlington transistor array manufactured by Texas Instruments. It integrates seven independent Darlington pairs within a single package, each featuring common emitters and integrated suppression diodes for inductive load protection. Designed for low-side switching applications, it accepts TTL, CMOS, PMOS, or DTL compatible inputs to drive loads such as relays, solenoids, and stepper motors. The component utilizes a surface-mount TSSOP-16 package with an exposed pad for thermal management.
Feature Summary
- Integrates seven high-voltage Darlington pairs with common emitters for multi-channel control
- Includes built-in clamping diodes across each output to suppress inductive kickback from coils
- Features input pins positioned opposite to corresponding output pins to simplify PCB layout routing
Applications
- Relay driver circuits
- Stepper motor and DC brushed motor drivers
- High-current LED and gas discharge lamp drivers
- Line drivers and logic buffers
Procurement Notes
Verify the specific suffix 'BPWR' against the official datasheet to confirm the TSSOP-16 package variant and tape-and-reel orientation. Ensure the ordering part number matches the exact manufacturer designation to avoid receiving alternative packages like PDIP or SOIC. Cross-reference the manufacturer's current product status to confirm availability and lifecycle stage before finalizing procurement plans.
Selection Notes
Select this component when driving multiple inductive loads requiring up to 500mA per channel from a microcontroller. The integrated flyback diodes eliminate the need for external snubber components, reducing bill of materials cost. Verify that the system voltage does not exceed the maximum collector-emitter rating and that the total power dissipation remains within the thermal limits of the TSSOP-16 package.
Part Context
This device belongs to the ULN2000 series of high-voltage, high-current Darlington arrays produced by Texas Instruments. The series is engineered for applications demanding significant current gain and voltage handling capabilities. The ULN2003BPWR specifically denotes the surface-mount version, providing a compact solution for space-constrained designs compared to through-hole alternatives while maintaining identical electrical performance characteristics.
Replacement Considerations
Compatible substitutes include the ULN2003AN (PDIP) and ULN2003APW (SOIC). These variants share identical pinouts and electrical specifications but differ in physical package dimensions. Verify mechanical fit and soldering requirements when substituting between through-hole and surface-mount technologies.
