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LP2951 Datasheet(PDF) 1 Page - Semtech Corporation |
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LP2951 Datasheet(HTML) 1 Page - Semtech Corporation |
1 / 3 page LP2951 © 1998 SEMTECH CORP. 150mA ADJUSTABLE VOLTAGE REGULATOR March 17, 1998 652 MITCHELL ROAD NEWBURY PARK CA 91320 1 DESCRIPTION The LP2951 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 8 lead SOIC package, the LP2951 se- ries includes features such as shutdown and low out- put voltage detect (typically due to low battery condi- tions). 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 (3.3 volt for LP2951CM-3.3) regulator or adjusted between 1.24 volts and 29 volts using external resistor pairs. FEATURES •= Guaranteed 150mA current •= Adjustable output voltage - 1.24V to 29V •= Accurate 5V or 3.3V output @ 100mA •= Low dropout voltage - 350-400mV @ 100mA •= Regulator or reference functions •= Direct replacement for LP2951C, MIC2951-03, AS2951C TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com PIN CONFIGURATION BLOCK DIAGRAM ABSOLUTE MAXIMUM RATINGS Parameter Symbol Maximum Units Supply Voltage V IN -0.3 to 30 V Shutdown Input Voltage -0.3 to 30 V Error Comp. Output Voltage -0.3 to 30 V Power Dissipation P D Internally Limited W Thermal Resistance Junction to Ambient θ JA 175 °C/W Operating Junction Temperature Range T J -40 to 125 °C Storage Temperature Range T STG -65 to 150 °C Lead Temperature (Soldering) 5 Sec T LEAD 260 °C APPLICATIONS •= Microcontroller supplies •= Linear regulators •= Adjustable Supplies •= Switching power supplies - post-regulation •= Portable modems •= Battery powered systems •= Cellular telephones •= Voltage references Notes: (1) Where -X.X denotes voltage options. Available voltages are: 3.3V (-3.3) and 5V (leave blank). (2) Add suffix ‘TR’ for tape and reel. ORDERING INFORMATION DEVICE (1)(2) OUTPUT PACKAGE LP2951CM-X.X ADJ SO-8 |
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