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LP38513
SNVS...
Product Folder
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Technical Documents
Tools & Software
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Reference Design
LP38513
SNVS361E – JULY 2007 – REVISED NOVEMBER 2015
LP38513 3-A Fast Response Ultra-Low Dropout Linear Regulator
1 Features
1 Input Supply
Voltage 2.25 V to 5.5 V Conversions from 2.5-V Rail to 1.8-V Rail Stable with Ceramic
Capacitors Low Ground Pin Current Load Regulation of 0.1% for 10 mA to 3-A Load
Current 60-μA Typical Quiescent Current in Shutdown
Mode Specified Output Current of 3 A Specified VOUT Accuracy of ±2.6% With
TJ from 0°C to +125°C ERROR Flag Indicates VOUT Status Overtemperature and Overcurrent Protection −40°C to +125°C Operating TJ Range
2 Applications
Microprocessor Power Supplies GTL, GTL+, BTL, and SSTL Bus Terminators Power Supplies for DSPs SCSI Terminator Post Regulators Battery Chargers Other Battery Powered Applications
3 Description
The LP38513 fast-response ultra-low dropout linear regulator operates from a 2.25-V to 5.5-V input supply. This device responds very quickly to step changes in line or load conditions, making it suitable for low-
voltage microprocessor applications. Developed on a
CMOS process, with a PMOS pass transistor, the LP38513 has low quiescent-current operation independent of the output load current.
Ground Pin Current: Typically 12 mA at 3-A load current.
Disable Mode: Typically 60 µA quiescent current when the enable (EN) pin is pulled low.
ERROR Flag: The ERROR flag goes low...