Overview
The ULQ2003ADRG4, produced by Texas Instruments, is a high-voltage, high-current Darlington transistor array. This device is part of the ULN2003A family and is designed to provide a versatile solution for various interface needs. It consists of seven NPN Darlington transistor pairs, each featuring a common emitter and open collector outputs. The ULQ2003ADRG4 is particularly useful for driving inductive loads such as solenoids, relays, lamps, small motors, and LEDs. The device includes internal suppression diodes to manage kick-back voltage from inductive loads, ensuring reliable operation.
Key Specifications
| Parameter | Test Conditions | Unit | Min | Max | |
|---|---|---|---|---|---|
| Input Capacitance | VI = 0, f = 1 MHz | pF | 15 | 25 | 25 |
| ON-state Input Voltage | VCE = 2 V, IC = 200 mA | V | 2.4 | 2.7 | 3 |
| Collector-Emitter Saturation Voltage | II = 250 μA, IC = 100 mA | V | 0.9 | 1.2 | 1.4 |
| High-Level Output Voltage after Switching | VS = 50 V, IO = 300 mA | mV | VS - 50 | VS - 50 | VS - 50 |
| Propagation Delay Time, Low- to High-Level Output | See Figure 6-9 | μs | 1 | 10 | 10 |
| Propagation Delay Time, High- to Low-Level Output | See Figure 6-9 | μs | 1 | 10 | 10 |
| Operating Temperature Range | °C | -40 | 105 | ||
| Package Type | SOIC (16), PDIP (16), SOP (16), TSSOP (16) |
Key Features
- High-Current Capability: Each channel can sink up to 500 mA, making it suitable for driving various loads such as solenoids, relays, and small motors.
- Internal Suppression Diodes: Includes diodes to suppress kick-back voltage from inductive loads, ensuring reliable operation.
- Wide GPIO Compatibility: Can operate directly with TTL or CMOS devices at supply voltages of 5 V or 3.3 V due to the integrated 2.7-kΩ series base resistor.
- High-Current Gain: Darlington connected NPN transistors provide a high-current gain, allowing for high-output current drive with low input current.
- Wide Temperature Range: Operates over a temperature range of -40°C to 105°C.
Applications
- Inductive Load Driving: Suitable for driving solenoids, relays, and other inductive loads with built-in suppression diodes to manage kick-back voltage.
- Resistive Load Driving: Can drive resistive loads such as lamps and LEDs with the appropriate pull-up resistors.
- Motor Control: Can be used to control small motors by managing the high current and voltage requirements.
- Interface Solutions: Provides solutions for various interface needs, including GPIO expansion and level shifting.
Q & A
- What is the ULQ2003ADRG4 used for?
The ULQ2003ADRG4 is used for driving high-current loads such as solenoids, relays, lamps, small motors, and LEDs.
- What is the maximum current each channel can sink?
Each channel can sink up to 500 mA.
- What is the operating temperature range of the ULQ2003ADRG4?
The device operates over a temperature range of -40°C to 105°C.
- Does the ULQ2003ADRG4 have built-in suppression diodes?
- Can the ULQ2003ADRG4 operate with TTL or CMOS devices?
- What is the purpose of the 2.7-kΩ series base resistor in the ULQ2003ADRG4?
The 2.7-kΩ series base resistor allows the device to operate directly with TTL or CMOS devices.
- How many channels does the ULQ2003ADRG4 have?
The device has seven NPN Darlington transistor pairs.
- What types of packages are available for the ULQ2003ADRG4?
The device is available in SOIC (16), PDIP (16), SOP (16), and TSSOP (16) packages.
- How do you calculate the power dissipation of the ULQ2003ADRG4?
The power dissipation can be calculated using the equation PD = Σ(VOLi * ILi), where VOLi is the output voltage for the load current ILi, and ensuring it does not exceed the maximum allowable power dissipation dictated by the thermal resistance and ambient temperature.
- What is the maximum junction temperature for the ULQ2003ADRG4?
The maximum junction temperature should be limited to less than 125°C.
