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Texas Instruments ULQ2003ATDRG4Q1
- Part No.:
- ULQ2003ATDRG4Q1
- Manufacturer:
- Texas Instruments
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ULQ2003ATDRG4Q1.pdf
- Description:
- IC PWR DRIVER NPN 1:1 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,298
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Product details
Overview
ULQ2003ATDRG4Q1 from Texas Instruments is an automotive-qualified 7-channel high-voltage Darlington transistor array with 500mA per channel collector current rating, 50V output voltage capability, integrated common-cathode clamp diodes, and 2.7kΩ input base resistors for direct TTL/5V CMOS interfacing - used in relay, stepper motor, lamp, and LED driver circuits.
For engineers reviewing the ULQ2003ATDRG4Q1 datasheet, ULQ2003ATDRG4Q1 pinout, ULQ2003ATDRG4Q1 application, or ULQ2003ATDRG4Q1 equivalent, this page delivers verified electrical specs, thermal limits, SOIC-16 package details, automotive-grade reliability data (AEC-Q100), and real-world drive capability for inductive load switching.
Technical Context
The ULQ2003ATDRG4Q1 integrates seven NPN Darlington pairs sharing a common emitter (Pin 8) and common cathode clamp node (Pin 9), enabling simultaneous sinking of up to 500mA per channel into inductive loads. Its 2.7kΩ series base resistor ensures compatible drive from 3.3V/5V logic without external components.
Each Darlington pair delivers β² gain >10,000, allowing low-input-current activation (1.35mA max at VI = 3.85V) while maintaining VCE(sat) ≤1.4V at IC = 200mA. The device operates across –40°C to +105°C and includes ESD protection exceeding ±2000V HBM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channel count | 7 independent Darlington sink outputs - enables multi-load control from single IC |
| Max collector current (per channel) | 500mA - supports driving relays, solenoids, and small DC motors directly |
| Output voltage rating | 50V - handles 12V–48V coil supplies with margin for flyback transients |
| VCE(sat) @ IC = 200mA | 1.4V max - minimizes power loss and self-heating during sustained conduction |
| Input base resistor | 2.7kΩ - sets logic-compatible input current (≤1.35mA at 3.85V), eliminating external biasing |
| Operating temperature range | –40°C to +105°C - qualified for under-hood automotive applications per AEC-Q100 |
| ESD rating (HBM) | ±2000V - exceeds automotive ESD immunity requirements without added protection |
Pinout & Package
ULQ2003ATDRG4Q1 is supplied in a 16-pin SOIC (D) package measuring 9.90mm × 3.90mm, with standard JEDEC outline and gull-wing leads suitable for automated SMT assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1B–7B (Pins 1–7) | Input base terminals | Accept TTL/CMOS logic signals; internal 2.7kΩ resistor connects each to respective Darlington base |
| E (Pin 8) | Common emitter | Shared emitter node tied to system ground; carries total sink current from all active channels |
| COM (Pin 9) | Common cathode clamp | Connects to inductive load supply rail; provides path for flyback current via integrated diodes |
| 1C–7C (Pins 10–16) | Collector outputs | Open-collector outputs rated for 50V/500mA; sink current when corresponding input is high |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Rated for automotive applications with full temperature and reliability validation |
| Integrated clamp diodes | Seven common-cathode diodes eliminate need for external flyback diodes in relay/motor circuits |
| TTL/5V CMOS compatible inputs | 2.7kΩ internal base resistors enable direct interface with microcontrollers and logic without pull-ups or current-limiting resistors |
| High-current sinking capability | 500mA per channel allows driving 12V relays (e.g., 120Ω coil) or multiple LEDs in parallel |
| Parallel output support | Multiple channels can be paralleled to deliver >500mA total sink current for higher-power loads |
Applications
| Relay Driver | Stepper Motor Phase Driver |
|---|---|
Use Scenario: Controlling 12V automotive relays in body control modules or power distribution units. IC Role / Device Role / Timing Role: High-side switch replacement - sinks relay coil current to ground on command from MCU GPIO. Use Value: Eliminates discrete transistor + diode + resistor design; reduces BOM count by 3× per channel and improves layout density. |
Use Scenario: Driving unipolar stepper motor phases in HVAC actuators or seat positioners. IC Role / Device Role / Timing Role: Current-sinking phase driver synchronized to step pulses from motor controller IC. Use Value: Handles 300–400mA phase current with <1.4V saturation drop, minimizing heat generation during continuous operation. |
| Lamp Driver | LED Display Driver |
Use Scenario: Switching incandescent or halogen lamps (e.g., dome lights, courtesy lamps) in vehicle interior lighting systems. IC Role / Device Role / Timing Role: Low-frequency on/off switch for resistive lamp loads; handles inrush current up to 5× steady-state. Use Value: Withstands 50V rating and 500mA peak, supporting 12V/24V lamp systems without derating or external snubbers. |
Use Scenario: Driving multiplexed 7-segment or dot-matrix LED displays in instrument clusters or infotainment panels. IC Role / Device Role / Timing Role: Column sink driver in common-anode LED matrix; sequenced by display controller. Use Value: Delivers consistent 20–35mA per segment with tight VCE(sat) tolerance, ensuring uniform brightness across segments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Darlington array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ULQ2004ATDRG4Q1 | 10.5kΩ input base resistor; requires ≥6V logic input for full turn-on; lower input current (0.5mA typ @ 5V) | Better suited for 6–15V CMOS logic interfaces; not compatible with 3.3V or TTL-level drivers | Select ULQ2004ATDRG4Q1 only when driving from higher-voltage logic; ULQ2003ATDRG4Q1 remains optimal for 3.3V/5V MCU interfaces. |
| ULN2003A | Non-automotive grade; rated for –20°C to +70°C; no AEC-Q100 qualification; identical pinout and electrical specs except temp range | Restricted to commercial/industrial use; unsuitable for safety-critical or under-hood automotive deployment | Use ULN2003A only in non-automotive designs where cost is prioritized over automotive qualification and extended temperature operation. |
Compared with ULQ2004ATDRG4Q1, ULQ2003ATDRG4Q1 offers superior compatibility with 3.3V/5V logic and broader ambient temperature coverage; versus ULN2003A, it adds AEC-Q100 compliance and extended –40°C to +105°C operation - critical for automotive reliability.
Availability
ULQ2003ATDRG4Q1 is available at Aetrix Electronics and suitable for automotive relay control, stepper motor actuation, lamp switching, and LED display driving requiring stable component supply and long-term production continuity.
Supply support for ULQ2003ATDRG4Q1 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and automotive-grade ICs with decades of high-reliability component development.
The ULQ200xA-Q1 product line was designed specifically for automotive signal conditioning and high-current load switching - delivering robust, integrated Darlington arrays qualified to AEC-Q100 standards for under-hood and chassis applications.
FAQ
What is the maximum operating temperature for ULQ2003ATDRG4Q1?
The ULQ2003ATDRG4Q1 is rated for operation from –40°C to +105°C ambient temperature, meeting AEC-Q100 Grade 2 requirements for automotive under-hood applications. Its junction temperature must remain ≤150°C, and thermal design must account for RθJA = 87.9°C/W in SOIC package.
Does ULQ2003ATDRG4Q1 require external flyback diodes when driving relays?
No - ULQ2003ATDRG4Q1 includes seven integrated common-cathode clamp diodes connected between each collector output (Pins 10–16) and the COM pin (Pin 9). When COM is tied to the relay coil supply, these diodes safely dissipate flyback energy without external components.
Can ULQ2003ATDRG4Q1 drive 3.3V logic directly?
Yes - the ULQ2003ATDRG4Q1's 2.7kΩ internal base resistors allow direct connection to 3.3V logic outputs. At VI = 3.85V, input current is 0.93–1.35mA, ensuring reliable saturation of each Darlington pair without external biasing.
What is the pin-compatible alternative for higher-voltage logic interfaces?
The ULQ2004ATDRG4Q1 is pin-compatible and functionally identical but uses a 10.5kΩ input resistor, making it suitable for 6–15V CMOS logic. It is not compatible with 3.3V or TTL-level signals due to insufficient base drive at lower voltages.
Is ULQ2003ATDRG4Q1 RoHS compliant?
ULQ2003ATDRG4Q1 is obsolete per TI's packaging addendum, and its RoHS status is not explicitly declared in the official documentation. For new designs, TI recommends ULQ2003AQDRQ1 (RoHS-compliant, –40°C to +125°C) or ULQ2003ATPWRQ1 (TSSOP, RoHS-compliant).
ULQ2003ATDRG4Q1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 50V (Max)
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 500mA
- Rds On (Typ):
- -
- Input Type:
- Inverting
- Features:
- -
- Fault Protection:
- -
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ULQ2003ATDRG4Q1 FAQ
1.How can I place an order for ULQ2003ATDRG4Q1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ULQ2003ATDRG4Q1 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 ULQ2003ATDRG4Q1 reliable?
The price and inventory of ULQ2003ATDRG4Q1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ULQ2003ATDRG4Q1 is usually 5 days.
3.What payment methods are accepted for ULQ2003ATDRG4Q1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ULQ2003ATDRG4Q1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ULQ2003ATDRG4Q1?
ULQ2003ATDRG4Q1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ULQ2003ATDRG4Q1 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 ULQ2003ATDRG4Q1?
For technical support, including ULQ2003ATDRG4Q1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ULQ2003ATDRG4Q1 requirements.
6.How does Aetrix verify that ULQ2003ATDRG4Q1 is sourced from the original manufacturer or authorized distributors?
All ULQ2003ATDRG4Q1 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 ULQ2003ATDRG4Q1 meets industry standards.
7.What is the process for return or replacement of ULQ2003ATDRG4Q1?
All ULQ2003ATDRG4Q1 units undergo pre-shipment inspection (PSI). If there is an issue with ULQ2003ATDRG4Q1, 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 ULQ2003ATDRG4Q1 part is unused and in its original packaging.
Return procedure for ULQ2003ATDRG4Q1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ULQ2003ATDRG4Q1 Tags
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TPS22919DCKR
Texas Instruments
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MIC2091-1YM5-TR
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MIC2090-1YM5-TR
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TPS22995RZFR
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SIP32510DT-T1-GE3
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ULN2003D1013TR
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MIC2005A-1YM5-TR
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MIC2005A-1YM6-TR
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TPS22916BYFPR
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