Overview
The TPL7407LDR from Texas Instruments is a high-performance, 7-channel NMOS transistor array designed to drive a variety of loads, including relays, stepper motors, lamps, and light emitting diodes. This device is part of the TPL7407L series, which offers significant improvements over traditional bipolar Darlington arrays in terms of power efficiency and output characteristics. The TPL7407LDR is particularly suited for applications requiring high-voltage and high-current drive capabilities with low output leakage and internal free-wheeling diodes for inductive kick-back protection.
Key Specifications
| Parameter | Specification |
|---|---|
| Input Supply Voltage | 0V – 5.5V |
| Relay Supply Voltage | 8.5V – 24V |
| Output Current (Per Channel) | 0mA to 600mA |
| Number of Channels | 7 |
| Output Voltage | Up to 40V |
| Output Leakage (Per Channel) | < 10 nA |
| Ambient Temperature Range | -40°C to 125°C |
| Package | 16-pin SOIC and TSSOP |
Key Features
- High-voltage, high-current NMOS transistor array with 600-mA rated drain current per channel
- CMOS pin-to-pin compatibility with improvements over Darlington arrays (e.g., ULN2003A)
- Power efficient with very low output voltage drop (VOL)
- Internal free-wheeling diodes for inductive kick-back protection
- Input pull-down resistors allow tri-stating the input driver
- Input RC-snubber to eliminate spurious operation in noisy environments
- Compatible with 1.8-V to 5.0-V microcontrollers and logic interfaces
- ESD protection exceeds JESD 22: 2-kV HBM, 500-V CDM
Applications
The TPL7407LDR is suitable for a wide range of applications, including:
- Relay drivers
- Stepper motor drivers
- Lamp and LED drivers
- Industrial control systems
- Automotive systems requiring high-voltage and high-current drive capabilities
- Medical devices and equipment
- Consumer electronics requiring robust and efficient load driving
Q & A
- What is the TPL7407LDR used for?
The TPL7407LDR is a high-performance NMOS transistor array used to drive various loads such as relays, stepper motors, lamps, and LEDs.
- What is the output current rating per channel?
The output current rating per channel is up to 600 mA.
- What is the maximum output voltage?
The maximum output voltage is up to 40 V.
- What type of protection does the TPL7407LDR have for inductive loads?
The TPL7407LDR has internal free-wheeling diodes for inductive kick-back protection.
- Is the TPL7407LDR compatible with low-voltage microcontrollers?
Yes, it is compatible with 1.8-V to 5.0-V microcontrollers and logic interfaces.
- What are the package options for the TPL7407LDR?
The TPL7407LDR is available in 16-pin SOIC and TSSOP packages.
- What is the ambient temperature range for the TPL7407LDR?
The ambient temperature range is -40°C to 125°C.
- Does the TPL7407LDR have ESD protection?
Yes, it has ESD protection that exceeds JESD 22: 2-kV HBM, 500-V CDM.
- How does the TPL7407LDR compare to traditional Darlington arrays?
The TPL7407LDR offers improved power efficiency and lower output voltage drop compared to traditional Darlington arrays.
- Can the TPL7407LDR be used in noisy environments?
Yes, it has input RC-snubbers to eliminate spurious operation in noisy environments.
