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Date: 27-06-14

NMOS low-side driver replaces darlington transistor arrays in HV systems

Texas Instruments has introduced seven-channel, NMOS low-side driver, replacing standard Darlington transistor arrays with a power-efficient, drop-in compatible integrated circuit (IC). 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, this new device efficiently drives the LED matrix, relay or stepper motor in high-voltage applications, such as white goods, building automation, lighting and HVAC.

Key features and benefits of the TPL7407L:
Highest drain current: 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.
Highest power efficiency: Supports energy-efficiency in high-voltage systems, reducing power dissipation by 40 percent compared to Darlington arrays.
Pin-to-pin compatible with traditional arrays: Replacing existing arrays with this power-efficient device eases system design and frees power budget.
Full temperature range: Tested and compatible with the full -40C to 125C temperature range for harsh environments within industrial, automotive and telecommunications applications.

Availability, packaging and pricing
The TPL7407L is available in 16-pin SOIC and TSSOP packages. Suggested retail pricing in 1,000-unit quantities starts at US$0.40. The TPL7407LEVM is also available for US$49.00, providing an easy way to evaluate device performance and operating characteristics.

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