LP38502-ADJ Datasheet, PDF (1/27 Pages) Texas Instruments – LP3850x-ADJ, LP3850xA-ADJ 1.5-A Flexcap Low-Dropout Linear Regulatorfor 2.7-V to 5.5-V Inputs

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
LP38500-ADJ, LP38502-ADJ
SNVS539G – NOVEMBER 2007 – REVISED JUNE 2015
LP3850x-ADJ, LP3850xA-ADJ 1.5-A Flexcap Low-Dropout Linear Regulator
for 2.7-V to 5.5-V Inputs
1 Features
•1 Input Voltage: 2.7 V to 5.5 V
• Adjustable Output Voltage: 0.6 V to 5 V
• FlexCap: Stable with Ceramic, Tantalum, or
Aluminum Capacitors
• Stable with 10-µF Input and Output Capacitors
• Low Ground-Pin Current
• 25-nA Quiescent Current in Shutdown Mode
• Ensured Output Current of 1.5 A
• Ensured V_ADJ Accuracy of ±1.5% at 25°C (A
Grade)
• Ensured Accuracy of ±3.5% at 25°C (STD)
• Overtemperature and Overcurrent Protection
• ENABLE Pin (LP38502)
2 Applications
• ASIC Power Supplies In:
– Printers, Graphics Cards, DVD Players
– Set Top Boxes, Copiers, Routers
• DSP and FPGA Power Supplies
• SMPS Regulator
• Conversion from 3.3-V or 5-V Rail
3 Description
TI's FlexCap low-dropout (LDO) linear regulators
feature unique compensation that allow use of any
type of output capacitor with no limits on minimum or
maximum equivalent series resistance (ESR). The
LP38500 and LP38502 series of LDOs operates from
a 2.7-V to 5.5-V input supply. These ultra-low-dropout
linear regulators respond very quickly to step
changes in load, which make them suitable for low-
voltage microprocessor applications. Developed on a
CMOS process (utilizing a PMOS pass transistor) the
LP38500-ADJ and LP38502-ADJ have low quiescent
currents that changes little with load current.
Ground Pin Current: Typically 2 mA at 1.5-A load
current.
Disable Mode: Typically 25-nA quiescent current
when the ENABLE pin is pulled low. (LP38502)
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.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LP38500
LP38502
DDPAK/TO-263 (5) 10.16 mm x 8.42 mm
TO-263 (5)
10.16 mm x 9.85 mm
WSON (8)
3.00 mm x 2.50 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Typical Circuit (LP38500)
Typical Circuit (LP38502)
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.