Overview
The ULQ2004ADRG4 is a high-voltage, high-current Darlington transistor array produced by Texas Instruments. This device is part of the ULx200xA family and is designed to provide high-current drive capabilities with low input current requirements. Each device consists of seven NPN Darlington pairs, enabling high-current gain and efficient operation with TTL or CMOS logic systems.
The ULQ2004A specifically features a 10.5kΩ series base resistor, allowing it to operate directly with CMOS devices that use supply voltages ranging from 6V to 15V. This makes it suitable for a variety of applications requiring high-current drive and low input current.
Key Specifications
| Parameter | Test Conditions | Unit | MIN | TYP | MAX |
|---|---|---|---|---|---|
| VI(on) - ON-state input voltage | VCE = 2 V, IC = 200 mA | V | 2.7 | - | 3 |
| VOH - High-level output voltage after switching | VS = 50 V, IO = 300 mA | mV | - | - | VS - 50 |
| VCE(sat) - Collector-emitter saturation voltage | II = 250 μA, IC = 100 mA | V | 0.9 | - | 1.2 |
| ICEX - Collector cutoff current | VCE = 50 V, II = 0 | μA | - | - | 100 |
| II(off) - OFF-state input current | VCE = 50 V, IC = 500 μA | μA | 30 | - | 65 |
| II - Input current | VI = 3.85 V | mA | 0.93 | - | 1.35 |
| Ci - Input capacitance | VI = 0, f = 1 MHz | pF | 15 | - | 25 |
| tPLH - Propagation delay time, low- to high-level output | - | μs | 1 | - | 10 |
| tPHL - Propagation delay time, high- to low-level output | - | μs | 1 | - | 10 |
Key Features
- High-Current Drive Capability: Each channel consists of Darlington connected NPN transistors, providing high-current gain (up to 10,000 A/A) and enabling high-output current drive with low input current.
- Low Input Current Requirements: The device features a 10.5kΩ series base resistor, allowing operation directly with CMOS devices using supply voltages from 6V to 15V.
- Internal Free-Wheeling Diodes: Diodes connected between the output and COM pin suppress kick-back voltage from inductive loads, protecting the device and the circuit.
- Multiple Package Options: Available in various packages including SOIC, PDIP, SOP, TSSOP, and SOT, offering flexibility in design and implementation.
- High-Voltage Capability: The device can handle high collector-emitter voltages, making it suitable for applications requiring high-voltage drive.
Applications
- Inductive Load Drive: The ULQ2004A is capable of driving inductive loads such as relays, solenoids, and DC motors, suppressing kick-back voltage through internal free-wheeling diodes.
- Resistive Load Drive: It can also drive resistive loads, requiring a pull-up resistor to ensure proper logic levels.
- Automotive Systems: Suitable for use in automotive systems due to its high-voltage and high-current capabilities.
- Industrial Control Systems: Used in industrial control systems for driving high-current loads such as valves, pumps, and other actuators.
- Power Supplies and Switching Regulators: Can be used in power supply and switching regulator circuits to control high-current outputs.
Q & A
- What is the ULQ2004ADRG4 used for?
The ULQ2004ADRG4 is a high-voltage, high-current Darlington transistor array used for driving high-current loads such as inductive and resistive loads.
- What is the input current requirement for the ULQ2004A?
The input current requirement for the ULQ2004A is typically around 0.93 to 1.35 mA at an input voltage of 3.85 V.
- What is the collector-emitter saturation voltage of the ULQ2004A?
The collector-emitter saturation voltage (VCE(sat)) of the ULQ2004A is typically between 0.9 V and 1.2 V.
- Can the ULQ2004A drive inductive loads?
Yes, the ULQ2004A can drive inductive loads and includes internal free-wheeling diodes to suppress kick-back voltage.
- What are the package options available for the ULQ2004A?
The ULQ2004A is available in various packages including SOIC, PDIP, SOP, TSSOP, and SOT.
- What is the propagation delay time for the ULQ2004A?
The propagation delay time (tPLH and tPHL) for the ULQ2004A is typically between 1 μs and 10 μs.
- Can the ULQ2004A operate with TTL or CMOS logic?
Yes, the ULQ2004A can operate directly with CMOS devices using supply voltages from 6V to 15V.
- What is the input capacitance of the ULQ2004A?
The input capacitance (Ci) of the ULQ2004A is typically between 15 pF and 25 pF at 1 MHz.
- Is the ULQ2004A suitable for automotive applications?
Yes, the ULQ2004A is suitable for use in automotive systems due to its high-voltage and high-current capabilities.
- What is the maximum collector cutoff current for the ULQ2004A?
The maximum collector cutoff current (ICEX) for the ULQ2004A is 100 μA.
