Overview
The ULQ2004ADR is a high-voltage, high-current Darlington transistor array produced by Texas Instruments. This device is part of the ULx200xA series, which includes seven NPN Darlington pairs designed to handle high-current and high-voltage applications. The ULQ2004ADR is specifically tailored for operation with CMOS devices that use supply voltages ranging from 6V to 15V, making it versatile for various electronic systems.
The device features internal resistors and diodes that help in controlling input current and suppressing kick-back voltages from inductive loads, ensuring reliable and efficient operation.
Key Specifications
| Parameter | Test Conditions | Unit | Min | 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 | 1.4 |
| ICEX - Collector cutoff current | VCE = 50 V, II = 0 | μA | 100 | - | - |
| VF - Clamp forward voltage | IF = 350 mA | V | 1.7 | - | 2.2 |
| 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 |
| IR - Clamp reverse current | VR = 50 V | μA | 100 | - | - |
| Ci - Input capacitance | VI = 0, f = 1 MHz | pF | 15 | - | 25 |
Key Features
- High-Current Gain: Each channel consists of Darlington connected NPN transistors, providing a high-current gain (β2) that can be as high as 10,000 A/A at certain currents.
- Internal Resistors and Diodes: The device includes a 10.5kΩ series base resistor for each Darlington pair, allowing operation directly from CMOS devices with supply voltages of 6V to 15V. It also features diodes to suppress kick-back voltages from inductive loads.
- Low Input Current: The device operates with low GPIO voltages due to the high-current gain, making it efficient for low-input current applications.
- Multiple Package Options: Available in various packages such as SOIC, PDIP, SOP, TSSOP, and SOT, providing flexibility in design and implementation.
Applications
- Inductive Load Drive: The ULQ2004ADR is capable of driving inductive loads such as relays, solenoids, and motors, with internal free-wheeling diodes to suppress kick-back voltages.
- Resistive Load Drive: It can also drive resistive loads, requiring a pullup resistor to ensure proper logic levels.
- Automotive and Industrial Systems: Suitable for use in automotive and industrial systems where high-current and high-voltage capabilities are necessary.
- Printers and Peripherals: Often used in printer and peripheral devices that require high-current drivers.
Q & A
- What is the ULQ2004ADR used for?
The ULQ2004ADR is a high-voltage, high-current Darlington transistor array used for driving inductive and resistive loads in various electronic systems.
- What are the key features of the ULQ2004ADR?
Key features include high-current gain, internal resistors and diodes, low input current operation, and multiple package options.
- What is the typical input current for the ULQ2004ADR?
The typical input current is around 0.93 to 1.35 mA at an input voltage of 3.85 V.
- How does the ULQ2004ADR handle inductive loads?
The device includes internal free-wheeling diodes to suppress kick-back voltages from inductive loads.
- What are the recommended operating conditions for the ULQ2004ADR?
The device operates with CMOS devices that use supply voltages ranging from 6V to 15V.
- What is the collector-emitter saturation voltage (VCE(sat)) for the ULQ2004ADR?
The VCE(sat) is typically between 0.9 V to 1.4 V depending on the current conditions.
- What is the maximum collector cutoff current (ICEX) for the ULQ2004ADR?
The maximum collector cutoff current is 100 μA at VCE = 50 V and II = 0.
- How does the ULQ2004ADR manage power dissipation?
The device's power dissipation is managed by ensuring the on-chip power dissipation is lower than or equal to the maximum allowable power dissipation, which is dependent on the junction temperature and thermal resistance.
- What are the typical applications of the ULQ2004ADR?
Typical applications include driving inductive and resistive loads in automotive, industrial systems, printers, and peripherals.
- What are the available package options for the ULQ2004ADR?
The device is available in SOIC, PDIP, SOP, TSSOP, and SOT packages.
