TLV70028DCKR

Product Overview

TLV70028DCKR from Texas Instruments is a single-output linear voltage regulator that provides a fixed 2.8 V positive rail from inputs up to 5.5 V. The device is rated for 200 mA output current and specifies a maximum dropout voltage of 0.25 V at 200 mA. It includes an enable control feature and protection against over-current, over-temperature, reverse-polarity, and under-voltage lockout conditions. The regulator is supplied in a 5-TSSOP, SC-70-5, SOT-353 surface-mount package and is specified for operation from -40°C to 125°C junction temperature.

Key Features

• Fixed 2.8 V positive output with 200 mA rated output current
• Maximum input voltage of 5.5 V and maximum dropout voltage of 0.25 V at 200 mA
• 55 µA quiescent current and 270 µA maximum supply current
• 68 dB power-supply rejection ratio at 1 kHz
• Enable control feature for regulator state management
• Over-current, over-temperature, reverse-polarity, and under-voltage lockout protection features
• Surface-mount 5-TSSOP, SC-70-5, SOT-353 package
• Junction temperature range of -40°C to 125°C

Applications

• Low-power logic circuits requiring a fixed 2.8 V rail from a 5.5 V supply
• Compact board designs using an enable-controlled local power domain
• Sensor or interface boards needing linear regulation with over-current and over-temperature protection
• Supply inputs requiring reverse-polarity and under-voltage lockout protection

Design & Procurement Notes

Designers should verify that the available input voltage remains above the 2.8 V output plus the 0.25 V dropout margin at the intended load current, and does not exceed the 5.5 V maximum input rating. The enable control can be used to turn the regulator on or off in a board-level power sequence. The 55 µA quiescent current and 270 µA maximum supply current should be considered in low-power budget calculations. Because the device is specified for a junction temperature range of -40°C to 125°C, thermal design should account for the SC-70-5 surface-mount package and the expected operating conditions. The over-current, over-temperature, reverse-polarity, and under-voltage lockout protection features should be considered within the overall system fault-handling design.