Overview
The ULQ2003ATDRG4Q1 is a high-voltage, high-current Darlington transistor array produced by Texas Instruments. This device is part of the ULQ200xA-Q1 family and is designed for a wide range of applications requiring high-current drive capabilities. It consists of seven npn Darlington pairs, each capable of sinking up to 500 mA of collector current. The device is qualified for automotive applications and features ESD protection, high-voltage outputs, and input compatibility with various logic types. It is particularly useful for driving inductive loads, such as motors, solenoids, and relays, due to its integrated suppression diodes.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Collector Current (single output) | 500 | mA |
| High-Voltage Output | 50 | V |
| ESD Protection | 200 | V (Machine Model, C = 200pF, R = 0) |
| Input Compatibility | TTL, 5V CMOS, 3.3V CMOS | |
| Series Base Resistor | 2.7 kΩ (ULQ2003A-Q1), 10.5 kΩ (ULQ2004A-Q1) | |
| Operating Temperature Range | -40°C to 105°C (ULQ2003AT), -40°C to 125°C (ULQ2003AQ) | |
| Package Types | SOIC (16), TSSOP (16), SOT (16) | |
| Package Size (SOIC) | 9.90mm × 3.90mm |
Key Features
- High-voltage outputs: 50V
- High-current capability: 500mA per Darlington pair
- ESD protection exceeds 200V using machine model (C = 200pF, R = 0)
- Inputs compatible with TTL, 5V CMOS, and 3.3V CMOS devices
- Integrated suppression diodes for inductive load switching
- Series base resistors for direct operation with logic devices
- Qualified for automotive applications
Applications
- Relay drivers
- Stepper and DC brushed motor drivers
- Lamp drivers
- Display drivers (LED and gas discharge)
- Line drivers
- Logic buffers
Q & A
- What is the ULQ2003ATDRG4Q1 used for? The ULQ2003ATDRG4Q1 is used for driving high-voltage, high-current loads such as relays, motors, and lamps.
- What is the maximum collector current per Darlington pair? The maximum collector current per Darlington pair is 500 mA.
- What is the ESD protection rating of the ULQ2003ATDRG4Q1? The ESD protection rating exceeds 200V using the machine model (C = 200pF, R = 0).
- What types of logic devices are the inputs compatible with? The inputs are compatible with TTL, 5V CMOS, and 3.3V CMOS devices.
- What is the purpose of the integrated suppression diodes? The integrated suppression diodes are used to suppress kick-back voltage from inductive loads.
- Can the Darlington pairs be paralleled for higher current capability? Yes, the Darlington pairs can be paralleled to achieve higher current capability.
- What are the typical package types for the ULQ2003ATDRG4Q1? The typical package types are SOIC (16), TSSOP (16), and SOT (16).
- What is the operating temperature range for the ULQ2003ATDRG4Q1? The operating temperature range is -40°C to 105°C for ULQ2003AT and -40°C to 125°C for ULQ2003AQ.
- Is the ULQ2003ATDRG4Q1 qualified for automotive applications? Yes, the ULQ2003ATDRG4Q1 is qualified for automotive applications.
- How do the series base resistors facilitate operation with logic devices? The series base resistors allow the device to operate directly with TTL or CMOS devices without additional external components.
