7-channel, NMOS low-side driver replaces Darlington transistor arrays
The TPL7407L replaces half of the transistor arrays required to drive high current loads, providing a new option for high voltage systems that previously required a number of transistor arrays or a motor driver. Reducing power by 40 percent, the device efficiently drives the LED matrix, relay or stepper motor in high-voltage applications, such as white goods, building automation, lighting and HVAC.
The TPL7407L complements TI’s broad portfolio of peripheral drivers, covering a wide voltage and current range, giving designers the ability to choose a device to suit their needs without extensive system redesign. When used with the SN74HC595 register, one or multiple TPL7404 can be controlled with just three GPIO pins, providing a flexible, efficient solution.
With 600 mA per channel, the TPL7407L offers 20 percent better drain current to drive higher power, reducing the number of relay drivers required per board.
The device supports energy-efficiency in high-voltage systems, reducing power dissipation by 40 percent compared to Darlington arrays.
Replacing existing arrays with the power-efficient device simplifies system design and frees power budget. The TPL7407L has been tested and is compatible with the full -40°C to 125°C temperature range for harsh environments within industrial, automotive and telecommunications applications.
Availability and Pricing
The TPL7407L is available in 16-pin SOIC and TSSOP packages. Suggested retail pricing in 1,000-unit quantities starts at $0.40. The TPL7407LEVM is also available for $49.00, providing an easy way to evaluate device performance and operating characteristics.
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