IC, V REG, LDO, 150MA, SMD, SOT23-5

 

LP5951MF-2.0

Manufacturer Part NumberLP5951MF-2.0
DescriptionIC, V REG, LDO, 150MA, SMD, SOT23-5
ManufacturerNational Semiconductor
LP5951MF-2.0 datasheets

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Specifications of LP5951MF-2.0

Primary Input Voltage3VOutput Voltage2V
Dropout Voltage Vdo250mVNo. Of Pins5
Output Current150mAVoltage Regulator Case StyleSOT-23
Operating Temperature Range-40°C To +125°COutput Voltage Fixed2V
Rohs CompliantYesLead Free Status / RoHS StatusLead free / RoHS Compliant
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Micropower, 150mA Low-Dropout CMOS Voltage
Regulator
General Description
The LP5951 regulator is designed to meet the requirements
of portable, battery-powered systems providing a regulated
output voltage and low quiescent current. When switched to
shutdown mode via a logic signal at the Enable pin, the power
consumption is reduced to virtually zero.
The LP5951 is designed to be stable with small 1µF ceramic
capacitors.
The LP5951 also features internal protection against short-
circuit currents and over-temperature conditions.
Performance is specified for a -40°C to 125°C temperature
range.
The device is available in SOT23-5 and SC70-5 package.
The device is available in fixed output voltages in the range
of 1.3V to 3.7V. For availability, please contact your local NSC
sales office.
Typical Application Circuit
© 2011 National Semiconductor Corporation
LP5951
Features
■
Excellent line transient response: ±2mV typ.
■
Excellent PSRR: -60dB at 1kHz typ.
■
Low quiescent current of 29µA typ.
■
1.8 to 5.5V input voltage range
■
Small SC70-5 and SOT23-5 packages
■
Fast turn-on time of 30µs typ.
■
Typ. < 1nA quiescent current in shutdown
■
Guaranteed 150mA output current
■
Output voltage range: 1.3V to 3.7V
■
Logic controlled enable 0.4V/0.9V
■
Good load transient response of 50mVpp typ.
■
Thermal-overload and short-circuit protection
■
-40°C to +125°C junction temperature range
Applications
■
General purpose
201362
January 19, 2011
20136201
www.national.com

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LP5951MF-2.0 Summary of contents

  • Page 1

    ... The device is available in SOT23-5 and SC70-5 package. The device is available in fixed output voltages in the range of 1.3V to 3.7V. For availability, please contact your local NSC sales office. Typical Application Circuit © 2011 National Semiconductor Corporation LP5951 Features ■ Excellent line transient response: ±2mV typ. ...

  • Page 2

    ... For 5-Lead Small Outline Package SOT23-5 (MF) Output Voltage LP5951 Supplied as 1000 Units, (V) Tape and Reel LP5951MF-1.3 1.3 LP5951MF-1.3 LP5951MF-1.5 1.5 LP5951MF-1.5 LP5951MF-1.8 1.8 LP5951MF-1.8 LP5951MF-2.0 2.0 LP5951MF-2.0 LP5951MF-2.5 2.5 LP5951MF-2.5 LP5951MF-2.8 2.8 LP5951MF-2.8 LP5951MF-3.0 3.0 LP5951MF-3.0 LP5951MF-3.3 3.3 LP5951MF-3.3 www.national.com 20136202 See NS Package Number MAA05A ...

  • Page 3

    For 5-Lead Small Outline Package SC70-5 (MG) Output Voltage LP5951 Supplied as 1000 Units, (V) Tape and Reel LP5951MG-1.3 1.3 LP5951MG-1.3 LP5951MG-1.5 1.5 LP5951MG-1.5 LP5951MG-1.8 1.8 LP5951MG-1.8 LP5951MG-2.0 2.0 LP5951MG-2.0 LP5951MG-2.5 2.5 LP5951MG-2.5 LP5951MG-2.8 2.8 LP5951MG-2.8 LP5951MG-3.0 3.0 LP5951MG-3.0 LP5951MG-3.3 ...

  • Page 4

    ... Human Body Model: Machine Model ESD Caution Notice National Semiconductor recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper ESD handling techniques can result in damage. Electrical Characteristics Typical values and limits appearing in standard typeface are for T operating temperature range: -40°C ...

  • Page 5

    Enable Control Characteristics Symbol Parameter I Maximum Input Current Input EN V Low Input Threshold IL (shutdown) V High Input Threshold IH (enable) Transient Characteristics Symbol Parameter ΔV Dynamic Line V IN OUT Transient V OUT(NOM) ΔV ...

  • Page 6

    Output Current Derating Maximum Load Current Block Diagram www.national.com , T = 85° 1.5V OUT A OUT 6 20136204 20136205 ...

  • Page 7

    Typical Performance Characteristics ceramic 1V 25°C, Enable pin is tied OUT(NOM) A Load Transient Response Line Transient Response Enable Start-up Time Unless otherwise specified Load Transient Response 20136209 ...

  • Page 8

    Output Voltage Change vs Temperature Power Supply Rejection Ratio www.national.com Ground Current vs V 20136217 20136215 8 IN 20136216 ...

  • Page 9

    Application Hints POWER DISSIPATION AND DEVICE OPERATION The permissible power dissipation for any package is a mea- sure of the capability of the device to pass heat from the power source, the junctions of the IC, to the ultimate heat ...

  • Page 10

    The ceramic capacitor’s capacitance can vary with tempera- ture. The capacitor type X7R, which operates over a temper- ature range of -55°C to +125°C, will only vary the capacitance to within ±15%. The capacitor type X5R has a similar toler- ...

  • Page 11

    Physical Dimensions inches (millimeters) unless otherwise noted For most accurate revision please refer to www.national.com/packaging/parts/ NS Package Number MF05A 5-Lead Small Outline Package SOT23-5 (MF), NS Package Number MAA05A 5-Lead Small Outline Package SC70-5 (MG), 11 www.national.com ...

  • Page 12

    ... For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...

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