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Micropower, 150mA Low-Dropout CMOS Voltage Regulator
LP5951
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1 PF
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SNVS345G –JUNE 2006–REVISED
LP5951 Micropower, 150-mA Low-Dropout CMOS Voltage Regulator Features 3 DescriptionThe LP5951 regulator is designed to meet the Input Voltage Range: 1.8Vto 5.5V requirements of portable battery-powered systems• Output Voltage Range: 1.3Vto 3.7V providing a regulated output voltage and low• Excellent Line Transient Response:±2 mV quiescent current. When switchedto shutdown mode
(typical) viaa logic signalat the Enable (EN) pin, the power
consumptionis reducedto virtually zero.• Excellent PSRR: –60 dBat1 kHz typical Low Quiescent Currentof29 µA typical The LP5951is designedtobe stable with small 1-µF
ceramic capacitors. The device also features internal• Small SC70-5 and SOT-23-5 Packages protection against short-circuit currents and over-• Fast Turnon Timeof30µs typ. temperature conditions.• Typical<1 nA Quiescent Currentin Shutdown Performance is specified fora –40°C to 125°C• Ensured 150-mA Output Current temperature range. Logic Controlled Enable 0.4 V/0.9V The deviceis availablein fixed output voltagesin the• Good Load Transient Responseof50 mVpp range of 1.3V to 3.7 V. For availability, please(typical) contact your localTI sales office. Thermal Overload and Short-Circuit Protection
Device Information(1)• -40°Cto 125°C Junction Temperature Range
2 ApplicationsGeneral Purpose
(1) Forall available packages, see the orderable addendumat
the endofthe datasheet.
Simplified Schematic
