LP38841MRX-ADJ NOPB ,0.8A Fast-Response Ultra Low Dropout Adjustable Linear Regulators 8-SO PowerPAD -40 to 125FEATURES DESCRIPTIONThe LP38841-ADJ is a high current, fast response2• Ideal for Conversion from 1. ..
LP38841MRX-ADJ/NOPB ,0.8A Fast-Response Ultra Low Dropout Adjustable Linear Regulators 8-SO PowerPAD -40 to 125ELECTRICAL CHARACTERISTICSLimits in standard typeface are for T = 25°C, and limits in boldface type ..
LP38841S-1.2 ,0.8A Ultra Low Dropout Linear RegulatorsFeaturesn Ideal for conversion from 1.8V or 1.5V inputsThe LP38841 is a high current, fast response ..
LP38842MR-ADJ ,1.5A Ultra Low Dropout Linear RegulatorsPin DescriptionPin Name DescriptionBIAS The bias pin is used to provide the low current bias voltag ..
LP38842S-1.2 ,1.5A Ultra Low Dropout Linear RegulatorsApplicationssuitable for use in powering DSP, Microcontroller Core volt-n ASIC Power Supplies In:ag ..
LP38842SX-1.2 ,1.5A Ultra Low Dropout Linear RegulatorsFeaturesn Ideal for conversion from 1.8V or 1.5V inputsThe LP38842 is a high current, fast response ..
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LP38841MRX-ADJ NOPB-LP38841MRX-ADJ/NOPB
0.8A Fast-Response Ultra Low Dropout Adjustable Linear Regulators
OUT
OUT
GND
BIAS
LP38841-
ADJ GND
10 PF
Ceramic
S/D
CFFR1
LP38841-ADJ
www.ti.com SNVS305C –FEBRUARY 2005–REVISED APRIL 2013
1FEATURES DESCRIPTIONThe LP38841-ADJisa high current, fast response
Ideal for Conversion from 1.8Vor 1.5V Inputs regulator which can maintain output voltage
• Designed for Use with Low ESR Ceramic regulation with minimum inputto output voltage drop.
Capacitors Fabricated ona CMOS process, the device operates
Ultra Low Dropout Voltage (75mV@ 0.8A Typ) from two input voltages: Vbias provides voltage
drive the gateof the N-MOS power transistor, while
• 0.56Vto 1.5V Adjustable Output Range Vinis the input voltage which supplies powerto
• Load Regulationof 0.1%/A (Typ) load. The useof an external bias rail allows the
30nA Quiescent Currentin Shutdown (Typ) to operate from ultra low Vin voltages. Unlike bipolar
regulators, the CMOS architecture consumes
• Low Ground Pin Currentatall Loads extremely low quiescent currentat any output load
• Over Temperature/Over Current Protection current. The use of an N-MOS power transistor
• Availablein8 Lead SO results in wide bandwidth, yet minimum external
capacitanceis requiredto maintain loop stability.
• −40°Cto +125°C Junction Temperature Range UVLO Disables Output when VBIAS< 3.8V The fast transient responseof these devices makes
them suitable for use in powering DSP,
Microcontroller Core voltages and Switch Mode
APPLICATIONSPower Supply post regulators. The parts are available
• ASIC Power Supplies In: in the SO package.
Desktops, Notebooks, and Graphics Cards, Dropout Voltage:75 mV (typ)@ 0.8A load current.
Servers
Quiescent Current:30 mA (typ)at full load.
– Gaming Set Top Boxes, Printers and
Copiers Shutdown Current:30 nA (typ) when S/D pin
Server Core and I/O Supplies Precision Reference Voltage: 1.5%
• DSP and FPGA Power Supplies accuracy.
SMPS Post-Regulators
Typical Application Circuit capacitoris used (see APPLICATION HINTS).
