LP2954AISX/NOPB

The LP2954 is a 5-V micropower LDO with very low quiescent current (/90 μA typical at 1-mA load) and very low dropout voltage (typically 60 mV at light loads and 470 mv at 250-mA 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.

Applications

• High-Efficiency Linear Regulator
• Low Dropout Battery-Powered Regulator

Key features

• 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-mA 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 Compatible with LM2940 and LM340 (5-V Version Only)
• Adjustable Version Adds ERROR Flag to Warn of Output Drop and a Logic-Controlled Shutdown