LP38512   
1.5A Fast-Transient Response Low-Dropout Linear Voltage Regulator with Error Flag 		Click link to Download

Features
•2.25V to 5.5V Input Voltage Range
•1.8V Fixed Output Voltage
•1.5A Output Load Current
•±2.5% Accuracy over Line, Load, and Full-Temperature Range from -40°C to +125°C
•Stable with tiny 10 µF ceramic capacitors
•0.20% Output Voltage Load Regulation from 10 mA to 1.5A
•Enable pin
• ^Error Flag Indicates Status of Output Voltage
•1uA of Quiescent current in Shutdown
•40dB of PSRR at 100 kHz
•Over-Temperature and Over-Current Protection
•TO-263 and TO-263 THIN Surface Mount Packages

Description

The LP38512-1.8 Fast-Transient Response Low-Dropout Voltage Regulator offers the highest-performance in meeting AC and DC accuracy requirements for powering Digital Cores. The LP38512-1.8 uses a proprietary control loop that enables extremely fast response to change in line conditions and load demands. Output Voltage DC accuracy is guaranteed at 2.5% over line, load and full temperature range from -40°C to +125°C. The LP38512-1.8 is designed for inputs from the 2.5V, 3.3V, and 5.0V rail, is stable with 10 μF ceramic capacitors, and has a fixed 1.8V output. An Error Flag feature monitors the output voltage and notifies the system processor when the output voltage falls more than 15% below the nominal value. The LP38512-1.8 provides excellent transient performance to meet the demand of high performance digital core ASICs, DSPs, and FPGAs found in highly-intensive applications such as servers, routers/switches, and base stations.

Applications
•Digital Core ASICs, FPGAs, and DSPs
•Servers
•Routers and Switches
•Base Stations
•Storage Area Networks
•DDR2 Memory


LP38512 Typical Application
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ParametersValues
Output Current 1500 mA
Input Min Voltage 2.25 Volt
Input Max Voltage 5.50 Volt
Dropout Voltage 0.300 Volt
Adjustable Output No
Quiescent Current 7.5 mA
PSRR 73 dB
Voltage Noise (rms) 75 uV
Ceramic Capacitors Stable Yes
On/Off Pin Yes
Error Flag Yes
RegType LDO
Temperature Min -40 deg C
Temperature Max +125 deg C
Output Voltage 1.8 Volt

Datasheet
TitleSizeDateOther
Language
LP38512-1.8 1.5A Fast-Transient Response Low-Dropout Linear Voltage Regulator with Error Flag356
Kbytes		6-Mar-09日本語


Featured Application Notes
TitleSizeDateOther
Language
AN-1676: Application Note 1676 LP38512TS-1.8 Evaluation Board344
Kbytes		5-Nov-07 


More Application Notes
TitleSizeDateOther
Language
AN-1518: Application Note 1518 LP38513S-1.8 Evaluation Board295
Kbytes		15-Aug-07 
AN-1675: Application Note 1675 LP38511TS-1.8 Evaluation Board437
Kbytes		5-Nov-07 

Part Number(s)
(NSID)		Top ViewAvailabilityCurrent Reported StockBudgetary PricingStandard Pack Size
LP38512TJ-1.8/NOPB

RoHS

Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
DIGIKEYWorldwide1000
$1.50 each at 1K+ pcsreel
of
1000
LP38512TS-1.8/NOPB

RoHS



TO-263		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
DIGIKEYWorldwide648
RS COMPONENTSWorldwide55
$1.50 each at 1K+ pcsrail
of
45
LP38512TSX-1.8/NOPB

RoHS



TO-263		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$1.50 each at 1K+ pcsreel
of
500

Part Number(s)
(NSID)		DescriptionAvailabilityCurrent Reported StockBudgetary PricingStandard Pack Size
LP38512TS-1.8EV
LP38512TS-1.8 1.5A Fast-Transient Response LDO with Error Flag Evaluation BoardFull production


 
DistributorRegionQty
DIGIKEYWorldwide0
NATIONALWorldwide70
$30.00 each1

This board is designed to enable the evaluation of the LP38512TS-1.8 voltage regulator.

Features:

  • 2.25V to 5.5V Input Range
  • 1.8V Fixed Output Range
  • 1.5A Output Load Current
  • 1.5A Output Load Current
  • ± 2.5% VOUT Accuracy over Line, Load, and Full-Temperature Range from -40°C to +125 °C
  • Stable with 10 µF ceramic capacitors
  • 0.20% Output Voltage Load Regulation from 10 mA to 800 mA
  • Enable pin
  • Error Flag Indicates Status of Output Voltage
  • 1 µA of Quiescent Current in Shutdown
  • 40dB of PSRR at 100 kHz
  • Over-Temperature and Over-Current Protection
  • TO263-5 Package

Applications:

  • Digital Core ASICs, FPGAs, and DSPs
  • Servers
  • Routers and Switches
  • Base Stations
  • Storage Area Networks
  • DDR2 Memory

Contents:

  • A LP38512TS-1.8 Fully Assembled Evaluation Board
  • A LP38521 Datasheet
  • A LP38512TS-1.8 Evaluation Board Appnote

Part Number(s)
(NSID)		DescriptionAvailabilityCurrent Reported StockBudgetary PricingStandard Pack Size
LP38512MR-ADJEV
LP38512 PSOP 1.5A Fast-Transient Response LDO with Error Flag Evaluation BoardFull production


 
DistributorRegionQty
DIGIKEYWorldwide0
NATIONALWorldwide95
$35.00 each1

Description:

The LP38512MR-ADJ is an adjustable LDO linear regulator capable of supplying up to 1.5A of output current, and incorporates an Enable function. The device has been designed to work with 10 µF input and output ceramic capacitors. Footprints areas for CIN and COUT will allow for a variety of sizes. Each board is assembled and tested in the factory. This evaluation board has the PSOP-8 package mounted, and the output voltage is set to 1.20V.

Contents:


Part Number(s)
(NSID)		Top ViewTypePinsMSL RatingPeak ReflowRoHSCAD SymbolsModelsPackage
Marking
Format
LP38512TJ-1.8/NOPB
TO-263 THIN51260RoHSN/AN/A
NSUZXYTTE#
L38512TJ
-1.8
LP38512TS-1.8/NOPB
TO-26353245RoHSN/AN/A
NSUZXYTTE#
LP38512
TS-1.8
LP38512TSX-1.8/NOPB
TO-26353245RoHSN/AN/A
NSUZXYTTE#
LP38512
TS-1.8

Reliability Metrics
Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LP38512TJ-1.8CMOS70184060010890004309006723
LP38512TS-1.8CMOS70184060010890004309006723
LP38512TSX-1.8CMOS70184060010890004309006723

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.


[Information as of 22-Nov-2009]