The TS2950/A & TS2951/A are low power voltage regulators . These devices are excellent choice for use in batterypowered applications such as cordless telephone, radio contr ol systems , and portable computers . The TS2950/A & TS2951/A is features v ery low quiescent current (75uA Typ.) and very low drop output voltage (Typ . 40uV at light load and 380 mV at 100 mA). This includes a tight initial tolerance of 1% (A version), extremely good load and line regulation 0.05% typ. and very low output temperature coefficient, making the TS2950/A & TS2951/A useful as a low-power v oltage reference. TS2950/A & TS2951/A have other key additional feature of unregulated input voltage transient of -20V below ground (reverse battery) . The error flag output feature is used as pow er-on reset for warn of a low output voltage, due to following batteries on input. The logic-compatible shutdown input which enable the regulator to be switched on/off. The regulator output voltage may be pin-s trapped for a 5.0, 3.3 & 3V of programmed from 1.24V to 29V with external pair of resistors. Using of as design, processing and testing techniques make TS2950/A & TS2951/A superior over similar produc ts.