LP2951A

Features:

• Guaranteed 150mA current
• Adjustable output voltage - 1.24V to 29V
• Accurate 5V output @150mA
• Low dropout voltage - 450mV @ 150mA
• Regulator or reference functions
• Direct replacement for LP2951AC, MIC2951-02, AS2951AC


Application

• Microcontroller supplies
•Linear regulators
• Adjustable supplies
• Switching power supplies - post-regulation
• Portable modems
• Battery powered systems
• Cellular telephones
• Voltage references


Pinout




Specifications

Parameter	Symbol	Maximum	Units
Supply Voltage	VIN	-0.3 to 30	V
Shutdown Input Voltage		-0.3 to 30	V
Error Comp. Output Voltage		-0.3 to 30	V
Power Dissipation	PD	Internally Limited	W
Operating Junction Temperature Range	TJ	-40 to 125
Storage Temperature Range	TSTG	-65 to 150
Lead Temperature (Soldering) 5 Sec	TLEAD	260

Description

·The LP2951A is an improved version of the LP2951 and features tighter tolerance on the output voltage and reference voltage specifications. Both the LP2951 and LP2951A feature 150mA output current capability.

·The LP2951A series of low power voltage regulators have low quiescent current and low dropout voltage.

·The quiescent current increases minimally during dropout conditions thereby extending battery life.

·Available in the eight lead SOIC package, the LP2951A series includes features such as shutdown and low output voltage detect (typically due to low battery conditions) . This function may also be used as a power on reset function when triggered by CMOS or TTL inputs.

·The circuit can be used as a fixed voltage 5 volt regulator or adjusted between 1.24 volts and 29 volts using external resistor pairs.