STMicroelectronics ULQ2004D1013TR

Overview

ULQ2004D1013TR from STMicroelectronics is an automotive-grade seven-channel Darlington array in SO16 package, designed for high-voltage (50 V), high-current (500 mA per channel) switching of inductive loads. It features integrated clamp diodes, TTL/CMOS/PMOS-compatible inputs, and operates across –40 °C to 105 °C ambient. Used in relay drivers, solenoid controls, and thermal print-head interfaces in vehicle body electronics.

For engineers reviewing the ULQ2004D1013TR datasheet, ULQ2004D1013TR pinout, ULQ2004D1013TR application, or ULQ2004D1013TR equivalent, key selection criteria include output saturation voltage (≤1.6 V at 350 mA), input voltage thresholds (5–12 V logic compatibility), AEC-Q100 qualification, and SO16 thermal resistance (120 °C/W).

Technical Context

The ULQ2004D1013TR integrates seven independent open-collector NPN Darlington pairs with common emitters and built-in flyback diodes-each rated for 500 mA continuous and 600 mA peak current. Its input stage accepts 6–15 V CMOS/PMOS logic levels, enabling direct interface without external level-shifting.

Designed for automotive environments, it meets AEC-Q100 Grade 1 requirements (–40 °C to +125 °C junction), includes PAT/SYL/SBL statistical testing, and uses a narrow SO16 package with ECOPACK® compliance. The pinout places inputs opposite outputs to minimize PCB trace crosstalk in high-noise power-switching layouts.

Key Specifications

Pinout & Package

ULQ2004D1013TR is housed in a narrow SO16 (SOIC-16) plastic package with 1.27 mm pitch, 10 mm × 4 mm footprint, and ECOPACK® environmental compliance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Darlington array applications.

Compared with ULN2004A and TBD62083AFG, ULQ2004D1013TR uniquely combines AEC-Q100 qualification, integrated clamping, and 6–15 V input compatibility-making it the only choice for production automotive body electronics requiring zero-additional-component inductive load switching.

Availability

ULQ2004D1013TR is available at Aetrix Electronics and suitable for automotive body control modules, engine bay relay panels, thermal print-head drivers, and commercial vehicle lighting controllers requiring stable component supply across multi-year production cycles.

Supply support for ULQ2004D1013TR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog components for automotive, industrial, and consumer markets.

The ULQ200x series belongs to ST's high-reliability Darlington driver product line, engineered specifically for automotive load-switching applications demanding AEC-Q100 compliance, integrated protection, and simplified system-level design.

FAQ

What is the maximum safe continuous current per channel?

The ULQ2004D1013TR is rated for 500 mA continuous collector current per Darlington channel at T_A = 105 °C with SO16 package mounted on a standard FR-4 PCB. Derating is required above 85 °C ambient; full 500 mA operation assumes adequate copper pour and airflow to maintain junction temperature below 150 °C.

Can outputs be paralleled to increase current capacity?

Yes-outputs can be paralleled to deliver up to 3.5 A total (7 × 500 mA), provided traces and PCB layout balance current sharing. ST confirms this capability in the datasheet; however, thermal management becomes critical, and simultaneous switching must be ensured to prevent current hogging during transients.

Is a pull-down resistor required on the inputs?

No-inputs are CMOS-compatible with high-impedance OFF-state (I_I(OFF) ≤ 65 µA at 105 °C). However, a 10–100 kΩ pull-down is recommended in noisy automotive environments to prevent false triggering during MCU reset or floating states.

Does the COM (pin 16) connect to load supply or ground?

Pin 16 (V_CC/COM) connects to the positive supply rail of the inductive load (e.g., +12 V or +24 V), not ground. It serves as the common cathode for all internal clamp diodes, completing the flyback path when outputs switch off. Ground connection is made only at pin 8 (GND).