LP38513 Datasheet, PDF (1/25 Pages) National Semiconductor (TI) – 3A Fast Response Ultra Low Dropout Linear Regulator

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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 V_OUT Accuracy of ±2.6% With
T_J from 0°C to +125°C
• ERROR Flag Indicates V_OUT Status
• Overtemperature and Overcurrent Protection
• −40°C to +125°C Operating T_J 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 if V_OUT
falls more than typically 15% below the nominal
value.
• Precision Output Voltage: A specified V_OUT
accuracy of ±2.6% with T_J from 0°C to 125°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LP38513
TO-220 (5)
14.986 mm × 10.16 mm
DDPAK/TO-263 (5) 10.16 mm × 8.42 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application
V_IN
ON
V_EN
OFF
GND
C_IN
10 PF
Ceramic
IN
OUT
LP38513
EN
ERROR
GND
C_OUT
10 PF
Ceramic
10 k:
V_OUT
GND
V_ERROR
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.