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Diodes Incorporated ULN2003V12T16-13
- Part No.:
- ULN2003V12T16-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ULN2003V12T16-13.pdf
- Description:
- IC PWR RELAY N-CHAN 1:1 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:9,272
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Product details
Overview
ULN2003V12T16-13 from Diodes Incorporated is a 7-channel high-current bipolar Darlington sink driver IC designed for relay, solenoid, and stepper motor interface in industrial control and embedded systems. It supports 3.3V/5V logic inputs, delivers up to 140mA per channel at 5V input, features integrated freewheeling diodes with common cathode (COM) pin, and achieves 0.6V typical VOL at 140mA load - enabling efficient 12V relay driving with 12× lower power dissipation than ULN2003A.
For engineers reviewing the ULN2003V12T16-13 datasheet, ULN2003V12T16-13 pinout, ULN2003V12T16-13 application, or ULN2003V12T16-13 equivalent, key selection criteria include per-channel sink current capability, COM-pin diode configuration for inductive load protection, thermal performance in TSSOP-16 package, and compatibility with tri-statable microcontroller outputs via internal 300kΩ pull-down resistors.
Technical Context
The ULN2003V12T16-13 implements seven independent NPN Darlington pairs with base resistors and integrated input RC snubbers (9ns time constant), enabling robust operation in electrically noisy environments. Each channel includes a dedicated emitter-connected output and shares a common cathode (COM) pin for freewheeling diode return path.
It operates with logic-compatible input thresholds (VI(on) = 1.65V min, VI(off) = 0.6V max), draws only 12μA typical input current at 3.3V logic high, and maintains <0.5μA off-state leakage - supporting direct interfacing with low-power MCUs without external buffering or level shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channel count | 7 independent sink drivers - enables single-package control of multi-coil relays or unipolar stepper motors |
| Max output voltage | 20V - supports 12V and 24V industrial relay and solenoid loads |
| VOL @ 140mA | 0.6V typical - minimizes power loss (PLOSS ≈ 84mW/channel) and heat generation at full load |
| Input pull-down R | 300kΩ typical - ensures defined logic-low state when MCU pins are tri-stated or floating |
| ESD rating | 4kV HBM - provides baseline ESD robustness for board-level handling and system integration |
| Thermal resistance θJA | 144°C/W (TSSOP-16) - defines maximum power dissipation limit (277mW at +85°C ambient) |
| Switching delay tPHL | 50ns typical - supports >10MHz digital control timing in fast-sequencing applications |
Pinout & Package
ULN2003V12T16-13 is housed in a 16-pin TSSOP package (JEDEC MO-153, 5.0mm × 6.4mm footprint) with exposed pad for thermal enhancement and matte tin-plated leads compliant with MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN7 (Pins 1–7) | Logic input | CMOS-compatible inputs accepting 3.3V/5V logic; each includes internal 300kΩ pull-down and RC snubber |
| GND (Pin 8) | Ground reference | Common emitter return for all Darlington stages; must be low-impedance connection to system ground |
| COM (Pin 9) | Freewheeling diode cathode | Common cathode node for all 7 internal flyback diodes; connects to positive supply rail of inductive loads |
| OUT7–OUT1 (Pins 10–16) | Sink output | Emitter outputs capable of sinking up to 140mA each; OUT1 corresponds to IN1, OUT7 to IN7 |
Key Features
| Feature | Design Value |
|---|---|
| Integrated freewheeling diodes | Eliminates need for 7 external catch diodes - reduces BOM count and PCB area in relay/motor driver designs |
| Tri-state compatible inputs | Internal 300kΩ pull-downs prevent floating inputs during MCU reset or sleep - avoids unintended channel activation |
| Noise-immune input stage | RC snubber (9ns τ) suppresses fast transients - prevents false triggering in factory automation or motor drive environments |
| Low-power logic interface | 12μA typical input current at 3.3V - enables direct connection to battery-powered or low-power microcontrollers |
| Parallel channel operation | All 7 outputs can be wired in parallel to achieve 1.0A total sink current - supports high-current solenoids or lamp banks |
Applications
| Industrial Relay Control | Unipolar Stepper Motor Driver |
|---|---|
Use Scenario: Driving 12V DC electromagnetic relays in PLC I/O modules and machine safety interlocks. IC Role / Device Role / Timing Role: High-side switch replacement - sinks relay coil current to ground while COM pin connects to +12V supply. Use Value: Eliminates discrete transistor + diode per channel; 12× lower power dissipation vs. ULN2003A reduces thermal design burden in dense I/O cards. | Use Scenario: Controlling phase windings of 5V/12V unipolar stepper motors in CNC positioning stages and 3D printer extruders. IC Role / Device Role / Timing Role: Current-sinking driver for each motor winding; sequenced via MCU GPIOs with precise timing. Use Value: Integrated freewheeling diodes prevent voltage spikes during winding de-energization - improves motor step accuracy and extends driver lifetime. |
| Logic-Level Translation Interface | LED/Lamp Matrix Driver |
Use Scenario: Interfacing 3.3V microcontroller GPIOs to 12V LED status indicators or incandescent pilot lamps on industrial HMIs. IC Role / Device Role / Timing Role: Voltage-level shifter and current amplifier - translates logic levels while sourcing up to 140mA per indicator. Use Value: Input threshold (1.65V min) ensures reliable turn-on with 3.3V CMOS; low VOL preserves LED forward voltage margin. | Use Scenario: Driving multiplexed 12V LED arrays or automotive-style bulb banks in test equipment front panels. IC Role / Device Role / Timing Role: Row/column sink driver in static or multiplexed configurations; COM pin tied to +12V supply rail. Use Value: Parallel output capability (1.0A total) allows simultaneous illumination of multiple high-brightness LEDs without external current boosters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-channel sink driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ULN2003A | Legacy 7-channel Darlington; higher VOL (1.0V typ @ 100mA), no input snubber or pull-down | Requires external pull-down resistors and flyback diodes; unsuitable for noise-sensitive or low-power MCU interfaces | Only consider for legacy redesign where footprint compatibility is mandatory and noise immunity is not required |
| TBD7200F | 7-channel MOSFET sink driver; 0.35V RDS(on), 500mA/channel, built-in thermal shutdown | Higher current capacity and integrated protection; requires 5V gate drive, not 3.3V logic compatible | Select when >140mA/channel or overtemperature protection is required; verify MCU output voltage compliance |
Compared with ULN2003A, ULN2003V12T16-13 delivers superior noise immunity and lower power loss but shares identical pinout; compared with TBD7200F, it offers native 3.3V logic compatibility and smaller thermal footprint but lower peak current and no fault protection.
Availability
ULN2003V12T16-13 is available at Aetrix Electronics and suitable for industrial relay control, unipolar stepper motor driving, logic-level translation interfaces, and LED/lamp matrix applications requiring stable component supply and long-term manufacturability.
Supply support for ULN2003V12T16-13 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for industrial, computing, and consumer markets with ISO/TS 16949 and IATF 16949 certified facilities.
The ULN2003V12 product line targets cost-sensitive, noise-resilient interface applications in factory automation and embedded control - delivering enhanced efficiency and integration over legacy Darlington arrays without sacrificing pin compatibility.
FAQ
Can ULN2003V12T16-13 drive 24V relays?
Yes - its absolute maximum VOUT rating is 20V, so it is not rated for continuous 24V operation. For 24V relay coils, use an external series resistor to limit voltage across the output transistor to ≤20V, or select a device with ≥24V VCEO rating such as the ULN2803A.
What is the purpose of the COM pin?
The COM pin is the common cathode connection for all seven internal freewheeling diodes. It must be connected to the positive supply rail of the inductive load (e.g., +12V for a relay coil) to provide a safe path for back-EMF current during turn-off - preventing voltage spikes that could damage the IC or other circuitry.
Does ULN2003V12T16-13 require external base resistors?
No - each Darlington pair includes integrated base resistors optimized for 3.3V/5V logic drive. External base resistors are unnecessary and would degrade switching speed and increase input current requirements beyond datasheet specifications.
Is ULN2003V12T16-13 pin-compatible with ULN2003A?
Yes - ULN2003V12T16-13 uses the same 16-pin SOIC/TSSOP pinout as ULN2003A, including identical IN/OUT/GND/COM assignments. This allows drop-in replacement in existing layouts, though layout review is recommended to confirm thermal performance meets the improved specs.
ULN2003V12T16-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Series:
- ULx200xA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- Relay, Solenoid Driver
- Number of Outputs:
- 7
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- Low Side
- Output Type:
- Darlington
- Interface:
- Parallel
- Voltage - Load:
- 20V (Max)
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 700mA
- Rds On (Typ):
- -
- Input Type:
- Inverting
- Features:
- -
- Fault Protection:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
ULN2003V12T16-13 FAQ
1.How can I place an order for ULN2003V12T16-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for ULN2003V12T16-13 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ULN2003V12T16-13 reliable?
The price and inventory of ULN2003V12T16-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ULN2003V12T16-13 is usually 5 days.
3.What payment methods are accepted for ULN2003V12T16-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ULN2003V12T16-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ULN2003V12T16-13?
ULN2003V12T16-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ULN2003V12T16-13 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ULN2003V12T16-13?
For technical support, including ULN2003V12T16-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ULN2003V12T16-13 requirements.
6.How does Aetrix verify that ULN2003V12T16-13 is sourced from the original manufacturer or authorized distributors?
All ULN2003V12T16-13 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ULN2003V12T16-13 meets industry standards.
7.What is the process for return or replacement of ULN2003V12T16-13?
All ULN2003V12T16-13 units undergo pre-shipment inspection (PSI). If there is an issue with ULN2003V12T16-13, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ULN2003V12T16-13 part is unused and in its original packaging.
Return procedure for ULN2003V12T16-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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