STMicroelectronics ULQ2003D1013TRY

Overview

ULQ2003D1013TRY from STMicroelectronics is an automotive-grade seven-channel Darlington array in SO16 package, designed for high-voltage (50 V), high-current (500 mA continuous, 600 mA peak) switching of inductive loads. It integrates suppression diodes per channel, accepts TTL/CMOS-compatible inputs (VI(ON) = 2.4–3.0 V), and operates across –40 °C to 125 °C. It is used in engine control modules to drive fuel injectors, solenoid valves, and relay coils.

For engineers reviewing the ULQ2003D1013TRY datasheet, ULQ2003D1013TRY pinout, ULQ2003D1013TRY application, or ULQ2003D1013TRY equivalent, key selection criteria include AEC-Q100 qualification, output saturation voltage (VCE(SAT) ≤ 1.6 V at 350 mA), input current requirements (II(ON) = 0.93–1.35 mA at 3.85 V), and thermal resistance (RthJA = 120 °C/W in SO16).

Technical Context

The ULQ2003D1013TRY implements seven independent open-collector NPN Darlington pairs with common emitters and integrated flyback diodes-each rated for 50 V V_CEO and 500 mA I_C. Its input stage is optimized for 5 V TTL/CMOS logic compatibility, with VI(ON) thresholds defined at IC = 200–300 mA and VCE = 2 V.

It supports paralleling of outputs to increase current capacity and features low propagation delay (tPLH/tPHL ≤ 1 µs) and low input capacitance (CI = 15–25 pF), enabling reliable digital control of resistive and inductive loads in harsh automotive environments.

Key Specifications

Pinout & Package

ULQ2003D1013TRY is housed in a 16-pin narrow SOIC (SO16) package with gull-wing leads, ECOPACK®-compliant, and 1.27 mm pitch. Pin numbering follows standard SO16 top-view convention with inputs on one side and outputs on the opposite side to minimize PCB trace crosstalk.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ULN2003A and TBD62083AFG, ULQ2003D1013TRY uniquely combines AEC-Q100 qualification, integrated clamping, and SO16 packaging-making it the only drop-in solution for safety-critical automotive load switching without design revalidation.

Availability

ULQ2003D1013TRY is available at Aetrix Electronics and suitable for engine control units, transmission control modules, and body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ULQ2003D1013TRY 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, specializing in automotive, industrial, and power management solutions with vertical manufacturing and broad IP portfolio.

The ULQ2003 series belongs to ST's high-reliability Darlington driver product line, engineered specifically for automotive power interface applications demanding robustness against voltage transients, thermal stress, and long-term operational stability.

FAQ

Is ULQ2003D1013TRY pin-compatible with ULN2003A?

Yes - ULQ2003D1013TRY uses the identical SO16 footprint and pin assignment as ULN2003A, including input/output mapping and GND/VCC pin locations. However, pin 16 (VCC) is NC in both devices, and ULQ2003D1013TRY's AEC-Q100 qualification adds process and test rigor not present in ULN2003A.

Can outputs be paralleled, and what is the maximum combined current?

Yes - outputs may be paralleled to increase current capacity. With proper thermal design and equal trace impedance, two channels can safely deliver 1.0 A continuous (2 × 500 mA), limited by total package power dissipation and R_thJA = 120 °C/W. Derating is required above 85 °C ambient.

What is the purpose of the unused pin 16 (VCC)?

Pin 16 is a no-connect (NC) terminal with no internal bond wire or circuit connection. It exists solely for mechanical symmetry and package compatibility with other 16-pin SOIC variants. Leaving it unconnected poses no functional or reliability risk.

Does ULQ2003D1013TRY require external pull-up resistors on outputs?

No - outputs are open-collector Darlington stages that sink current to GND. External pull-ups are only needed if a logic-high signal is required at the load side (e.g., for active-high sensing); most inductive loads connect between V_BAT and the output, making pull-ups unnecessary.