LP2985LV Datasheet, PDF (1/15 Pages) National Semiconductor (TI) – Micropower 150 mA Low-Noise Low-Dropout Regulator in SOT-23 and micro SMD packages for Applications

LP2985LV
150ĆmA LOWĆNOISE, LOWĆDROPOUT REGULATOR
WITH SHUTDOWN FOR OUTPUT VOLTAGES <2.3 V
SLVS552 − OCTOBER 2004
D Available in the Texas Instruments
NanoStar and NanoFree Wafer Chip
Scale Packages
D Output Tolerance of:
− 1% (A Grade)
− 1.5% (Standard Grade)
D Ultra Low Dropout, Typically
280 mV at Full Load of 150 mA
D Wide V_IN Range . . . 16 V (Max)
D Low I_Q . . . 850 µA at Full Load at 150 mA
D Shutdown Current . . . 0.01 µA Typ
D Low Noise . . . 30 µV_RMS With 10-nF Bypass
Capacitor
D Stable With Low ESR Capacitors, Including
Ceramic
D Over-Current and Thermal Protection
D High Peak Current Capability
D For V_OUT Options .2.5 V, See LP2985 Data
Sheet
D Portable Applications
− Cellular Phones
− Palmtop and Laptop Computers
− Personal Digital Assistants (PDAs)
− Digital Cameras and Camcorders
− CD Players
− MP3 Players
DBV (SOT-23) PACKAGE
(TOP VIEW)
V_IN 1
GND 2
ON/OFF 3
5 V_OUT
4 BYPASS
YEQ, YEU, YZQ, OR YZU (WCSP) PACKAGE
(TOP VIEW)
V_IN
C3 _C1
B2
V_OUT
BYPASS
ON/OFF
A3 ^A1
GND
description/ordering information
The LP2985LV family of fixed-output, low-dropout regulators offers exceptional, cost-effective performance for
both portable and nonportable applications. Available in voltages of 1.25 V, 1.35 V, 1.5 V, 1.7 V, 1.8 V, and
2 V, the family has an output tolerance of 1% for the A version (1.5% for the non-A version), and is capable of
delivering 150-mA continuous load current. Standard regulator features, such as over-current and
over-temperature protection, are included.
The LP2985LV has a host of features that makes the regulator an ideal candidate for a variety of portable
applications:
• Low dropout: A PNP pass element allows a typical dropout of 280 mV at 150-mA load current.
• Low quiescent current: The use of a vertical PNP process allows for quiescent currents that are
considerably lower than those associated with traditional lateral PNP regulators.
• Shutdown: A shutdown feature is available, allowing the regulator to consume only 0.01 µA when the
ON/OFF pin is pulled low.
• Low-ESR-capacitor friendly: The regulator is stable with low ESR capacitors, allowing for the use of
small, inexpensive ceramic capacitors in cost-sensitive applications.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
NanoStar and NanoFree are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright  2004, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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