See datasheet for actual packaging/pinout drawings

Packaging

Package | PIN:

DGQ | 10

Temp:

I (-40 to 85)

ECO Plan:

Green (RoHS & no Sb/Br)

TPS40000DGQ


Low Input (2.25V-5.5V) 300 kHz Frequency, Synchronous Buck Controller, Source Only

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Texas Instruments TPS40000DGQ

The TPS4000x are controllers for low-voltage, non-isolated synchronous buck regulators. These controllers drive an N-channel MOSFET for the primary buck switch, and an N-channel MOSFET for the synchronous rectifier switch, thereby achieving very high-efficiency power conversion. In addition, the device controls the delays from main switch off to rectifier turn-on and from rectifier turn-off to main switch turn-on in such a way as to minimize diode losses (both conduction and recovery) in the synchronous rectifier with TI’s proprietary Predictive Gate Drive™ technology. The reduction in these losses is significant and increases efficiency. For a given converter power level, smaller FETs can be used, or heat sinking can be reduced or even eliminated.

The current-limit threshold is adjustable with a single resistor connected to the device. The TPS4000x controllers implement a closed-loop soft start function. Startup ramp time is set by a single external capacitor connected to the SS/SD pin. The SS/SD pin is also used for shutdown.

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