LP38500-ADJ Datasheet, PDF (1/23 Pages) National Semiconductor (TI) – 1.5A FlexCap Low Dropout Linear Regulator for 2.7V to 5.5V Inputs

LP38500-ADJ, LP38502-ADJ
www.ti.com
SNVS539F – NOVEMBER 2007 – REVISED APRIL 2013
LP38500/2-ADJ, LP38500A/2A-ADJ 1.5A FlexCap Low Dropout Linear Regulator for 2.7V to
5.5V Inputs
Check for Samples: LP38500-ADJ, LP38502-ADJ
FEATURES
1
•2 FlexCap: Stable with Ceramic, Tantalum, or
Aluminum Capacitors
• Stable with 10 µF Input/output Capacitor
• Adjustable Output Voltage from 0.6V to 5V
• Low Ground Pin Current
• 25 nA Quiescent Current in Shutdown Mode
• Ensured Output Current of 1.5A
• Available in DDPAK/TO-263, PFM, and WSON-8
Packages
• Ensured V_ADJ Accuracy of ±1.5% @ 25°C (A
Grade)
• Ensured Accuracy of ±3.5% @ 25°C (STD)
• Over-Temperature and Over-Current
Protection
• −40°C to +125°C Operating T_J Range
• Enable Pin (LP38502)
APPLICATIONS
• ASIC Power Supplies In:
– Printers, Graphics Cards, DVD Players
– Set Top Boxes, Copiers, Routers
• DSP and FPGA Power Supplies
• SMPS Regulator
• Conversion from 3.3V or 5V Rail
DESCRIPTION
TI's FlexCap LDO's feature unique compensation that
allows the use of any type of output capacitor with no
limits on minimum or maximum ESR. The LP38500/2
series of low-dropout linear regulators operates from
a +2.7V to +5.5V input supply. These ultra low
dropout linear regulators respond very quickly to step
changes in load, which makes them suitable for low
voltage microprocessor applications. Developed on a
CMOS process, (utilizing a PMOS pass transistor),
the LP38500/2 has low quiescent current that
changes little with load current.
Ground Pin Current: Typically 2 mA at 1.5A load
current.
Disable Mode: Typically 25 nA quiescent current
when the Enable pin is pulled low.
Simplified Compensation: Stable with any type of
output capacitor, regardless of ESR.
Precision Output: "A" grade versions available with
1.5% V_ADJ tolerance (25°C) and 3% over line, load
and temperature.
1
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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