LP4950C-5V

LP4950C-5V, LP4951C www.ti.com SNVS208C – SEPTEMBER 2002 – REVISED APRIL 2013 LP4950C-5V and LP4951C Adjustable Micropower Voltage Regulators Check for Samples: LP4950C-5V, LP4951C FEATURES 1 2 High Accuracy 5V Specified 100mA Output Extremely Low Quiescent Current Low Dropout Voltage Extremely Tight Load and Line Regulation Very Low Temperature Coefficient Use as Regulator or Reference Needs Only 1μF for Stability Current and Thermal Limiting . LP4951C VERSIONS ONLY Error Flag Warns of Output Dropout Logic-controlled Electronic Shutdown Output Pogrammable From 1.24 to 29V DESCRIPTION The LP4950C and LP4951C are micropower voltage regulators with very low quiescent current (75μA typ.) and very low dropout voltage (typ. 40mV at light loads and 380mV at 100mA). They are ideally suited for use in battery-powered systems. Furthermore, the quiescent current of the LP4950C/LP4951C increases only slightly in dropout, prolonging battery life. The LP4950C in the popular 3-pin TO-92 package is pin compatible with older 5V regulators. The 8-lead LP4951C is available in a plastic surface mount package and offers additional system functions. One such feature is an error flag output which warns of a low output voltage, often due to falling batteries on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. Also, the part may be pin-strapped for a 5V output or pr...