The TPS7A25 low-dropout linear voltage regulator (LDO) introduces a unique combination of a 2.4-V to 18-V input voltage range with very-low quiescent current (IQ). These features better help modern appliances meet increasingly stringent energy requirements, and help extend battery life in portable-power solutions.
The TPS7A25 is available in both fixed and adjustable versions. The fixed-voltage version eliminates external resistors and helps minimize printed circuit board (PCB) area. For more flexibility or higher output voltages, the adjustable version uses feedback resistors to set the output voltage from 1.24 V to 17.64 V. Both version have a 1% output regulation accuracy that provides precision regulation for most microcontrollers (MCUs).
The TPS7A25 LDO operates more efficiently than standard linear regulators because the maximum dropout voltage is less than 360 mV at 300 mA of current. This maximum dropout voltage allows for 92.5% efficiency from a 5.4-V input voltage (VIN) to 5.0-V output voltage (VOUT).
The power-good (PG) indicator can be used to either hold an MCU in reset until power is good, or for sequencing. The PG pin is an open-drain output; therefore, the pin is easily level-shifted for monitoring by a rail other than VOUT. The built-in current limit and thermal shutdown help protect the regulator in the event of a load short or fault.
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|Part number||Order||Output options||Iout (Max) (A)||Vin (Max) (V)||Vin (Min) (V)||Vout (Max) (V)||Vout (Min) (V)||Package Group||Features||Regulated outputs (#)||Operating temperature range (C)||Thermal resistance θJA (°C/W)||Noise (uVrms)||Approx. price (US$)||Rating||Output capacitor type||PSRR @ 100 KHz (dB)||Accuracy (%)||Vdo (Typ) (mV)||Iq (Typ) (mA)||Package size: mm2:W x L (PKG)|
||Adjustable Output||0.3||18||2.4||17.64||1.24||WSON | 6||
|1||-40 to 125||73||200||0.44 | 1ku||Catalog||Ceramic||22||1||200||0.0025||See datasheet (WSON)|
|TPS7A26||Samples not available||Adjustable Output||0.5||18||2.4||17.45||1.24||WSON | 6||
|1||-40 to 125||73||200||0.49 | 1ku||Catalog||Ceramic||22||1||330||0.0025||See datasheet (WSON)|