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Texas Instruments ULQ2004ATDRQ1
- Part No.:
- ULQ2004ATDRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ULQ2004ATDRQ1.pdf
- Description:
- IC PWR DRIVER NPN 1:1 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,107
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Product details
Overview
ULQ2004ATDRQ1 from Texas Instruments is an automotive-qualified 7-channel high-voltage Darlington transistor array designed for inductive load switching. It delivers 500mA per channel, supports 50V collector-emitter voltage, integrates common-cathode clamp diodes, and features 10.5kΩ input base resistors enabling direct interface with 6V–15V CMOS logic. It is used in relay drivers, stepper motor control, and LED/gas-discharge display systems.
For engineers reviewing the ULQ2004ATDRQ1 datasheet, ULQ2004ATDRQ1 pinout, ULQ2004ATDRQ1 application, or ULQ2004ATDRQ1 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, 500mA sink capability per channel, 10.5kΩ input resistor value, integrated flyback diodes tied to COM, and SOIC-16 thermal performance (RθJA = 87.9°C/W).
Technical Context
The ULQ2004ATDRQ1 implements seven independent NPN Darlington pairs with internal 10.5kΩ series base resistors-optimized for higher-supply CMOS logic (6V–15V), unlike the 2.7kΩ ULQ2003A-Q1 variant. Each channel provides open-collector sinking output with a shared emitter (E) and common cathode (COM) for clamp diode return.
It operates across –40°C to +105°C ambient temperature, supports 50V maximum VCE, exhibits VCE(sat) ≤1.6V at IC = 350mA and II = 500μA, and delivers tPLH/tPHL ≤10μs propagation delay. Input current is 0.35–1.45mA depending on applied VI (5V or 12V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channel count | 7 independent Darlington sink outputs - enables multi-load control without discrete transistors. |
| Max collector current per channel | 500mA - sufficient for driving relays, small solenoids, and lamp loads directly. |
| Collector-emitter voltage rating | 50V - supports 12V/24V/48V automotive and industrial supply rails with margin. |
| Input base resistor | 10.5kΩ - sets input current to ≤1.45mA at 12V, enabling direct drive from 6–15V CMOS without external biasing. |
| VCE(sat) @ 350mA | ≤1.6V - limits power dissipation to <560mW per active channel at full load. |
| ESD rating (HBM) | ±2000V - exceeds AEC-Q100-002 requirements for robustness in automotive assembly and operation. |
| Junction temperature range | –40°C to +150°C - ensures reliability under under-hood thermal stress with derated power above 25°C. |
Pinout & Package
ULQ2004ATDRQ1 is supplied in a 16-pin SOIC (D) package measuring 9.90mm × 3.90mm, with standard JEDEC MS-012AC footprint and gull-wing leads. Thermal resistance is RθJA = 87.9°C/W, supporting up to 494mW continuous power at 85°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1B–7B | Input (I) | Base inputs for channels 1–7; each internally biased via 10.5kΩ resistor to enable CMOS-level drive. |
| E | Common emitter (-) | Shared emitter node for all 7 Darlingtons; must be connected to system ground or low-side reference. |
| COM | Common cathode (-) | Return path for integrated clamp diodes; tied to inductive load supply to suppress flyback voltage. |
| 1C–7C | Collector output (O) | Open-collector outputs; sink current when corresponding input is high; require external pull-up or load connection. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Rated for automotive applications from –40°C to +125°C ambient, with full traceability and process control. |
| Integrated clamp diodes | Seven common-cathode diodes eliminate need for external flyback components when driving relays or motors. |
| CMOS-compatible input network | 10.5kΩ base resistors allow direct interface with 6–15V logic families without external current-limiting resistors. |
| Parallel-output capability | Multiple channels can be paralleled to increase total sink current beyond 500mA per channel. |
| Low input current requirement | 0.35mA typical at 5V input reduces MCU GPIO loading and simplifies level-shifting design. |
Applications
| Relay Driver | Stepper Motor Control |
|---|---|
Use Scenario: Driving 12V/24V electromagnetic relays in body control modules or power distribution units. IC Role / Device Role / Timing Role: High-current sink switch that replaces discrete transistor+diode+resistor networks for each relay coil. Use Value: Reduces BOM count by 3× per channel and eliminates layout sensitivity to flyback energy routing. |
Use Scenario: Controlling unipolar stepper motor phase windings in automotive HVAC actuators or seat positioners. IC Role / Device Role / Timing Role: Synchronized sink driver for four-phase excitation, sequenced via MCU GPIOs. Use Value: Enables precise current sinking up to 500mA per phase while maintaining thermal stability within SOIC package limits. |
| Lamp Driver | LED Display Interface |
Use Scenario: Switching incandescent or halogen lamps (e.g., interior lighting, dashboard backlighting) in vehicle cabins. IC Role / Device Role / Timing Role: Robust load switch handling inrush current and filament cold-resistance surges. Use Value: Withstands >5× cold filament current without latch-up, thanks to Darlington gain and thermal derating margins. |
Use Scenario: Multiplexed segment driving for 7-segment LED or gas-discharge displays in instrument clusters. IC Role / Device Role / Timing Role: Row-sink driver in common-anode display architecture, timed by microcontroller PWM. Use Value: Delivers consistent 20–300mA per segment with <1.6V saturation drop, minimizing display brightness variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Darlington array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ULQ2003ATDRQ1 | 2.7kΩ input resistor; optimized for 3.3V/5V TTL/CMOS; higher input current (0.93–1.35mA @ 3.85V). | Better suited for legacy 5V microcontrollers or mixed-voltage systems where lower VI drives are available. | Select ULQ2003ATDRQ1 when interfacing with 3.3V/5V logic; ULQ2004ATDRQ1 is preferred for 6–15V CMOS sources. |
| TBD7200AFG,EL | Single-channel automotive Darlington driver; 1.5A rating; integrated diagnostics and current sense; requires external flyback diode. | Used in safety-critical single-load applications requiring fault reporting (e.g., headlight leveling motors). | Choose TBD7200AFG,EL only when diagnostic feedback or >500mA per channel is required; not a drop-in replacement. |
Compared with ULQ2003ATDRQ1, ULQ2004ATDRQ1 reduces input current demand by ~60% at 5V and supports wider logic supply ranges; compared with TBD7200AFG,EL, it offers 7-channel integration but lacks diagnostics or current sensing.
Availability
ULQ2004ATDRQ1 is available at Aetrix Electronics and suitable for automotive relay control, stepper actuation, lamp switching, and LED display driving requiring stable component supply across production lifecycles.
Supply support for ULQ2004ATDRQ1 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 silicon with over 50 years of automotive qualification experience.
The ULQ200xA-Q1 family was engineered specifically for AEC-Q100-compliant high-current switching in automotive body electronics, replacing discrete transistor arrays with integrated, thermally robust Darlington solutions.
FAQ
What is the maximum operating temperature for ULQ2004ATDRQ1?
The ULQ2004ATDRQ1 is rated for operation from –40°C to +105°C ambient temperature (ULQ2004AT grade). Its junction temperature must remain ≤150°C, and power dissipation must be derated above 25°C using RθJA = 87.9°C/W. At 85°C ambient, maximum continuous power is 494mW.
Does ULQ2004ATDRQ1 require external flyback diodes when driving relays?
No. ULQ2004ATDRQ1 includes seven integrated common-cathode clamp diodes. When COM is connected to the relay coil supply rail, these diodes safely dissipate inductive kickback energy-eliminating the need for external diodes in standard relay-driving configurations.
Can ULQ2004ATDRQ1 drive a 12V automotive relay with 80Ω coil resistance?
Yes. With VCE(sat) ≤1.6V at 350mA and coil current ICOIL = (12V – 1.6V)/80Ω ≈ 130mA, ULQ2004ATDRQ1 comfortably sinks this load. Power dissipation per channel is ~208mW, well within SOIC thermal limits at moderate duty cycles.
How does ULQ2004ATDRQ1 differ from ULQ2003ATDRQ1 in input drive requirements?
ULQ2004ATDRQ1 uses a 10.5kΩ input resistor, drawing ≤1.45mA at 12V, whereas ULQ2003ATDRQ1 uses 2.7kΩ and draws 0.93–1.35mA at 3.85V. This makes ULQ2004ATDRQ1 optimal for 6–15V CMOS logic, while ULQ2003ATDRQ1 targets 3.3V/5V systems.
Is ULQ2004ATDRQ1 pin-compatible with ULN2003A or ULN2004A?
Yes-ULQ2004ATDRQ1 shares identical pinout, footprint, and functional mapping with ULN2004A and ULQ2004A-Q1 variants in SOIC-16. However, ULQ2004ATDRQ1 adds AEC-Q100 qualification, tighter ESD ratings (±2000V HBM), and automotive-grade screening not present in commercial ULN parts.
ULQ2004ATDRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Series:
- -
- 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:
- NPN
- 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
ULQ2004ATDRQ1 FAQ
1.How can I place an order for ULQ2004ATDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ULQ2004ATDRQ1 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 ULQ2004ATDRQ1 reliable?
The price and inventory of ULQ2004ATDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ULQ2004ATDRQ1 is usually 5 days.
3.What payment methods are accepted for ULQ2004ATDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ULQ2004ATDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ULQ2004ATDRQ1?
ULQ2004ATDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ULQ2004ATDRQ1 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 ULQ2004ATDRQ1?
For technical support, including ULQ2004ATDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ULQ2004ATDRQ1 requirements.
6.How does Aetrix verify that ULQ2004ATDRQ1 is sourced from the original manufacturer or authorized distributors?
All ULQ2004ATDRQ1 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 ULQ2004ATDRQ1 meets industry standards.
7.What is the process for return or replacement of ULQ2004ATDRQ1?
All ULQ2004ATDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with ULQ2004ATDRQ1, 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 ULQ2004ATDRQ1 part is unused and in its original packaging.
Return procedure for ULQ2004ATDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ULQ2004ATDRQ1 Tags
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