| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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35 pcs
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35 pcs | On Request | 1 | On Request | On Request | 12+ | On Request | On Request |
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The Texas Instruments TPS79428DCQ is a 250mA low-dropout (LDO) linear voltage regulator featuring ultralow noise, high power-supply rejection ratio (PSRR), and fast start-up times. It provides a fixed 2.8V output voltage and is designed for noise-sensitive analog applications.
Key electrical characteristics include a typical dropout voltage of 155mV at 250mA and a quiescent current of 170µA. The device boasts a high PSRR of 60dB at 10kHz, making it suitable for RF applications like VCOs and receivers. It also exhibits very low output noise, with the TPS79428 variant showing approximately 32µVrms of output voltage noise.
This regulator is available in a compact SOT-223-6 package, suitable for surface mounting. It includes an enable pin for control and protection features such as over current, over temperature, reverse polarity, and under voltage lockout (UVLO). The device is stable with a small 2.2µF ceramic capacitor on the output.
Applications benefiting from its performance include portable RF electronics, Bluetooth devices, wireless LAN, cellular telephones, and handheld organizers where clean power is critical.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.28 | $0.28 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The fixed output voltage is 2.8V.
The maximum input voltage is 5.5V.
The output current is 250mA typical.
The typical dropout voltage is 155mV at 250mA output current.
The operating temperature range is -40°C to 125°C.
It is available in a surface-mount SOT-223-6 package.
Over-current, over-temperature, reverse polarity, and under-voltage lockout protection are included.