Overview
The ULQ2003ATDRAS, produced by Texas Instruments, is a high-voltage, high-current Darlington transistor array. This device consists of seven NPN Darlington pairs, each featuring high-voltage outputs with common-cathode clamp diodes designed for switching inductive loads. The ULQ2003ATDRAS is qualified for automotive applications and operates over a wide temperature range of -40°C to 105°C. It is highly versatile and suitable for various interface needs, including driving solenoids, relays, lamps, small motors, and LEDs.
Key Specifications
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Output Voltage | VO | 50 | V |
| Input Voltage | VI | 30 | V |
| Collector Current - Continuous | IC | 500 | mA |
| Base Current - Continuous | IB | 25 | mA |
| Operating Ambient Temperature Range | TA | -40 to 105 | °C |
| Storage Temperature Range | Tstg | -55 to 150 | °C |
| Junction Temperature | TJ | 150 | °C |
| Thermal Resistance, Junction-to-Ambient | RθJA | 100 | °C/W |
| Collector-Emitter Saturation Voltage | VCE(sat) | 0.9 - 1.8 | V |
| Input Current - On Condition | II(on) | 0.93 - 1.35 | mA |
| Propagation Delay Time, Low- to High-Level Output | tPLH | 1 - 10 | μs |
Key Features
- Qualified for automotive applications
- ESD protection exceeds 200V using machine model (C = 200pF, R = 0)
- 500mA-rated collector current (single output)
- High-voltage outputs: 50V
- Output clamp diodes for switching inductive loads
- Inputs compatible with various types of logic (TTL, 5V CMOS, etc.)
- Relay-driver applications
- Ability to parallel outputs for higher current capability
Applications
- Relay drivers
- Stepper and DC brushed motor drivers
- Lamp drivers
- Display drivers (LED and gas discharge)
- Line drivers
- Logic buffers
- Solenoids and hammer drivers
Q & A
- What is the maximum output voltage of the ULQ2003ATDRAS?
The maximum output voltage is 50V.
- What is the continuous collector current rating of a single Darlington pair?
The continuous collector current rating is 500mA.
- What is the operating temperature range of the ULQ2003ATDRAS?
The operating temperature range is -40°C to 105°C.
- Does the ULQ2003ATDRAS have ESD protection?
Yes, it has ESD protection exceeding 200V using the machine model (C = 200pF, R = 0).
- Can the outputs of the ULQ2003ATDRAS be paralleled for higher current capability?
Yes, the outputs can be paralleled for higher current capability.
- What types of logic are the inputs compatible with?
The inputs are compatible with various types of logic, including TTL, 5V CMOS, and others.
- What is the thermal resistance, junction-to-ambient, for the ULQ2003ATDRAS?
The thermal resistance, junction-to-ambient, is 100°C/W.
- What is the collector-emitter saturation voltage range for the ULQ2003ATDRAS?
The collector-emitter saturation voltage range is 0.9 - 1.8V.
- What is the propagation delay time for low- to high-level output?
The propagation delay time is 1 - 10 μs.
- Does the ULQ2003ATDRAS require a power supply?
No, the device does not need a power supply, but the COM pin is typically tied to the system power supply.
