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Product Detailed Parameters
- Description：IC PWR RELAY 7NPN 1:1 SOP-16
- Series：-
- Mfr：TAEJIN
- Package：Tape & Reel (TR)
- 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-SOP
- Grade：-
- Qualification：-
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Overview
The ULN2003AD is a monolithic high-voltage, high-current Darlington transistor array manufactured by TAEJIN. It contains seven NPN Darlington pairs with common cathode clamp diodes for switching inductive loads. The device features a SOP-16 package and supports an output voltage of 50V with a rated collector current of 500mA per single output. It operates within a junction temperature range of -40°C to 125°C and an ambient temperature range of -40°C to 85°C. Input pins are placed opposite to output pins to simplify board layout.
Feature Summary
- Seven integrated NPN Darlington arrays per package
- Integrated common-cathode clamp diodes for inductive load protection
- Input pins positioned opposite to output pins to facilitate PCB layout
Applications
- Relay drivers
- Stepper and DC brushed motor drivers
- Lamp drivers
- Display drivers (LED and gas discharge)
- Logic buffers
Procurement Notes
Verify the manufacturer designation on the component marking against the official datasheet specifications. Confirm that the SOP-16 package dimensions match the required footprint. Ensure the ordering suffix corresponds to the correct logic family variant before finalizing procurement orders.
Selection Notes
Select this component when driving inductive loads requiring up to 50V and 500mA per channel. The internal 2.7kΩ base resistors allow direct interfacing with standard TTL or CMOS logic families without additional buffering components.
Part Context
This part belongs to the ULN200xA series of high-voltage Darlington arrays. The 'AD' suffix specifically denotes the Small Outline Package (SOP-16) configuration, distinguishing it from through-hole DIP variants like the ULN2003AN.
Replacement Considerations
Compatible substitutes include ULN2003A and ULN2003D1013TR. Verify pin compatibility and electrical ratings before substitution.
FAQ
What is the function of Pin 9?
Pin 9 is the Common Cathode Node (COM) for the internal flyback diodes, used to suppress reverse voltage spikes from inductive loads.
How does the input logic interface work?
Each channel includes a 2.7kΩ base resistor, allowing direct connection to TTL or 5V CMOS logic inputs.
What is the maximum peak collector current?
The absolute maximum peak collector current rating is 500 mA.
