LDO Voltage Regulators 120-mA smart cap-drop low-dropout (LDO) linear voltage regulator 14-HTSSOP -40 to 125

Sku: TT-MU-595-TPS7A7836PWPR

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Description of product

TPS7A78 Low-Dropout (LDO) Linear Regulator

Texas Instruments TPS7A78 Low-Dropout (LDO) Linear Regulator improves the overall efficiency and standby-power in power-supplies in an easy-to-use, non-magnetic approach to AC/DC conversion. The TPS7A78 uses a capacitor-drop architecture to lower the AC source voltage before actively clamping the rectified voltage. The device then regulates this rectified voltage down to the application-specific operating voltage. The unique architecture of the device allows the standby power to be reduced to just a few 10s of milliwatts. The TPS7A78 switched-capacitor stage reduces power losses by stepping down the rectified input voltage by a factor of four and increasing the output-to-input current by the same ratio, as given by PIN ≅ POUT and VIN ≅ VOUT × 4. Compared to a traditional capacitor-drop (cap-drop) stage, this step down reduces input current, thus minimizing the value of the capacitance needed.