LP38692-ADJ - 1A Low Dropout CMOS Linear Regulators with Adjustable Output Stable with Ceramic Output Capacitors from the PowerWise® Family
Datasheet Packaging Samples & Pricing Eval. Boards Reliability Knowledge Base

Features
•Output voltage range of 1.25V - 9V
•2.5% adjust pin voltage accuracy (25°C)
•Low dropout voltage: 450mV @ 1A (typ, 5V out)
•Wide input voltage range (2.7V to 10V)
•Precision (trimmed) bandgap reference
•Guaranteed specs for -40°C to +125°C
•1µA off-state quiescent current
•Thermal overload protection
•Foldback current limiting
•SOT-223 and 6-Lead LLP packages
•Enable pin (LP38692-ADJ)

General Description

The LP38690/2-ADJ low dropout CMOS linear regulators provide 2.5% precision reference voltage, extremely low dropout voltage (450mV @ 1A load current, VOUT = 5V) and excellent AC performance utilizing ultra low ESR ceramic output capacitors.

The low thermal resistance of the LLP and SOT-223 packages allow the full operating current to be used even in high ambient temperature environments.

The use of a PMOS power transistor means that no DC base drive current is required to bias it allowing ground pin current to remain below 100 µA regardless of load current, input voltage, or operating temperature.

Dropout Voltage: 450 mV (typ) @ 1A (typ. More...


Applications

•Hard Disk Drives
•Notebook Computers
•Battery Powered Devices
•Portable Instrumentation
  Typical Application
*click for larger image


ParametersValues
Output Current 1000 mA
Output Min 1.25 Volt
Input Min Voltage 2.7 Volt
Input Max Voltage 10 Volt
Dropout Voltage Undefined Volt
Adjustable Output Yes
Quiescent Current 0.055 mA
On/Off Pin Yes
Error Flag No
RegType LDO
Temperature Min -40 deg C
Temperature Max 125 deg C
Output Voltage Undefined Volt
Output Max 9 Volt
Automotive Yes
PowerWise Yes


Typical Performance

click for larger image


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Block Diagram
click for larger image

LP38690-ADJ Internal Block Diagram

Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LP38690-ADJ/LP38692-ADJ 1A Low Dropout CMOS Linear Regulators with Adjustable Output Stable with Ceramic Output Capacitors 380
Kbytes		 19-Aug-09 Download

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Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
Format
TypePinsSpec.MSL
Rating		Peak
Reflow		RoHS
Report		CAD
Symbols		WeeksQtyQty$US each
LP38692EVAL1A Low Dropout CMOS Linear Regulators with Adjustable OutputFull productionN/A
 
Buy Now 		1+$12.001-
8 weeksN/A
LP38692MP-ADJSOT-2235NOPB1260RoHS N/A Full productionN/A
Samples
Buy Now 		1K+$0.55reel
of
1000		XYTT
LJNB
6 weeks10000
LP38692MPX-ADJSOT-2235NOPB1260RoHS N/A Full productionN/A
 
Buy Now 		1K+$0.55reel
of
2000		XYTT
LJNB
6 weeks10000
LP38692SD-ADJLLP6NOPB1260RoHS N/A Full productionN/A
Samples
Buy Now 		1K+$0.55reel
of
1000		ZXYTT
L122B
8 weeks2000
LP38692SDX-ADJLLP6NOPB1260RoHS N/A Full productionN/A
 
Buy Now 		1K+$0.55reel
of
4500		ZXYTT
L122B
8 weeks10000

General Description

The LP38690/2-ADJ low dropout CMOS linear regulators provide 2.5% precision reference voltage, extremely low dropout voltage (450mV @ 1A load current, VOUT = 5V) and excellent AC performance utilizing ultra low ESR ceramic output capacitors.

The low thermal resistance of the LLP and SOT-223 packages allow the full operating current to be used even in high ambient temperature environments.

The use of a PMOS power transistor means that no DC base drive current is required to bias it allowing ground pin current to remain below 100 µA regardless of load current, input voltage, or operating temperature.

Dropout Voltage: 450 mV (typ) @ 1A (typ. 5V out).

Ground Pin Current: 55 µA (typ) at full load.

Adjust Pin Voltage: 2.5% (25°C) accuracy.

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LP38692MP-ADJABCD15003417500423400011201409060
LP38692MPX-ADJABCD15003417500423400011201409060
LP38692SD-ADJABCD15003417500423400011201409060
LP38692SDX-ADJABCD15003417500423400011201409060

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-1424: Application Note 1424 LP38692-ADJ Evaluation Board 116
Kbytes		 9-Nov-07 Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 8-Nov-2009]