LP2954A Datasheet | Texas Instruments

Features - 1 5-V Output within 1.2% Over Temperature (A Grade) - Adjustable 1.23-V to 29-V Output Voltage Available (LP2954IM and LP2954AIM) - Ensured 250-m A Output Current - Extremely Low Quiescent Current - Low Dropout Voltage - Reverse Battery Protection - Extremely Tight Line and Load Regulation - Very Low Temperature Coefficient - Current and Thermal Limiting - Pin patible with LM2940 and LM340 (5-V Version Only) - Adjustable Version Adds ERROR Flag to Warn of Output Drop and a Logic-Controlled Shutdown 2 Applications - High-Efficiency Linear Regulator - Low Dropout Battery-Powered Regulator 3 Description The LP2954 is a 5-V micropower LDO with very low quiescent current (90 μA typical at 1-m A load) and very low dropout voltage (typically 60 m V at light loads and 470 m V at 250-m A load current). The quiescent current increases only slightly at dropout (120 μA typical), which prolongs battery life. The LP2954 with a fixed 5-V output is available in three-pin TO-220 and DDPAK/TO-263 packages. The adjustable LP2954 is provided in an 8-pin, smalloutline SOIC package. The adjustable version also provides a resistor network which can be pin strapped to set the output to any voltage from to 1.23 V to 29 V. Reverse battery protection is provided for the IN pin. The tight line and load regulation (0.04% typical), as well as very low output temperature coefficient make the LP2954 well suited for use as a low-power voltage reference. Output accuracy is ensured at both room temperature and over the entire operating temperature range. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) SOIC (8) 4.90 mm × 3.91 mm LP2954 DDPAK/TO-263 (3) 10.18 mm × 8.41 mm TO-220 (3) 14.986 mm × 10.16 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Simplified Schematic VOUT...