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Mixed Signal & Analog Showcase
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Mixed Signal & Analog Showcase

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Showcase (Volume 21) is available in HTML and PDF format. - 305KB

Single, high-speed MOSFET drivers in SOT-23 packages

Product Features

  • 25 ns rise/fall times, with 40 ns propagation delay
  • 2 A peak output drive current
  • 4 V to 14 V normal operating range
  • 40 V internal regulator
  • Resists latch-up
  • 50 µA max supply current - inputs high or low
  • Characterized for operation from -40° to 125°C

The TPS2816 through TPS2819 are low-cost, single-channel, high-speed MOSFET drivers, capable of delivering up to 2 A into highly capacitive loads. These MOSFET drivers follow the performance features of the previously released TPS2811 family of dual-channel drivers, but are single-channel devices in a SOT-23 package.

This family drives 1 nF loads with a maximum 25 ns rise/fall time and a maximum 40 ns propagation delay. The high speed of these devices provides maximum efficiency for high frequency operation. The internal design of these devices inherently minimizes shoot-through currents.

These devices include an internal voltage regulator that allows the 4 V to 14 V operating range to be extended to 40 V, for higher voltage applications. The regulator can power other PWM control circuitry provided the power dissipation requirements do not exceed the

SOT-23 package limitations. The regulator input can be left disconnected if not used. Implementations with and without the internal regulator are shown above.

The TPS2816 and TPS2818 are single inverting drivers, and the TPS2817 and TPS2819 are single noninverting drivers. An additional feature in the TPS2816 and TPS2817 is the implementation of an active pull-up circuit on the input pins. This eliminates the need for the external pull-up when using an open-collector PWM.

Ideally suited for applications such as: off-line power supplies and DC-DC converters up to 1-kW, motor drivers, and relay or solenoid drivers. These devices provide a cost effective solution in a 5-pin SOT-23 package.

Device Function Internal VREG Package
TPS2811 Dual inverting Yes PDIP, SO, TSSOP
TPS2812 Dual noninverting Yes PDIP, SO, TSSOP
TPS2813 One inverting & one noninverting Yes PDIP, SO, TSSOP
TPS2814 Dual 2-input AND gate No PDIP, SO, TSSOP
TPS2815 Dual 2-input NAND gate No PDIP, SO, TSSOP
TPS2816 Single Inverting, with pull-up Input Yes SOT-23
TPS2817 Single Noninverting with pull-up Input Yes SOT-23
TPS2818 Single Inverting driver Yes SOT-23

Vol 21 March, 1997

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