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LP2985
150 mA LOW NOISE, LOW DROPOUT REGULATOR
WITH SHUTDOWN
SLVS522C − JULY 2004 − REVISED OCTOBER 2004
D
Available in the Texas Instruments
D
D
D
D
D
D
NanoStar and NanoFree Wafer Chip
Scale Packages
Output Tolerance of:
− 1% (A Grade)
− 1.5% (Standard Grade)
Ultra-Low Dropout, Typically
− 280 mV at Full Load of 150 mA
− 7 mV at 1 mA
Wide V
IN
Range . . . 16 V Max
Low I
Q
. . . 850
µA
at Full Load at 150 mA
Shutdown Current . . . 0.01
µA
Typ
Low Noise . . . 30
µV
RMS
With 10-nF Bypass
Capacitor
DBV (SOT-23) PACKAGE
(TOP VIEW)
D
Stable With Low-ESR Capacitors, Including
D
D
D
D
Ceramic
Over-Current and Thermal Protection
High Peak-Current Capability
For V
OUT
Options
32.3
V, See LP2985LV
Data Sheet
Portable Applications
− Cellular Phones
− Palmtop and Laptop Computers
− Personal Digital Assistants (PDAs)
− Digital Cameras and Camcorders
− CD Players
− MP3 Players
YEQ, YEU, YZQ, OR YZU (WCSP) PACKAGE
(TOP VIEW)
C3 C1
B2
V
IN
GND
ON/OFF
1
2
3
5
4
V
OUT
BYPASS
V
IN
V
OUT
BYPASS
ON/OFF
A3
A1
GND
description/ordering information
The LP2985 family of fixed-output, low-dropout regulators offers exceptional, cost-effective performance for
both portable and nonportable applications. Available in voltages of 2.5 V, 2.6 V, 2.7 V, 2.8 V, 2.85 V, 3 V,
3.1 V, 3.2 V, 3.3 V, and 5 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 LP2985 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 and 7 mV
at 1-mA load.
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 the use of small,
inexpensive, ceramic capacitors in cost-sensitive applications.
Low noise: A BYPASS pin allows for low-noise operation, with a typical output noise of 30
µV
(RMS),
with the use of a 10-nF bypass capacitor.
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
1
SLVS522C − JULY 2004 − REVISED OCTOBER 2004
LP2985
150 mA LOW NOISE, LOW DROPOUT REGULATOR
WITH SHUTDOWN
description/ordering information (continued)
•
Small packaging: For the most space-constraint needs, the regulator is available in SOT-23 package,
as well as NanoStar wafer chip scale packaging, offering an even smaller size with improved thermal
and electrical characteristics. NanoStar package technology is a major breakthrough in IC packaging
concepts, using the die as the package.
ORDERING INFORMATION
TJ
PART
GRADE
VOUT
(NOM)
2.5 V
2.6 V
2.7 V
2.8 V
2.85 V
PACKAGE†
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
SOT23-5 (DBV)
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
ORDERABLE
PART NUMBER
LP2985A-25DBVR
LP2985A-25DBVT
LP2985A-26DBVR
LP2985A-26DBVT
LP2985A-27DBVR
LP2985A-27DBVT
LP2985A-28DBVR
LP2985A-28DBVT
LP2985A-285DBVR
LP2985A-285DBVT
LP2985A-30DBVR
LP2985A-30DBVT
LP2985A-31DBVR
LP2985A-31DBVT
LP2985A-32DBVR
LP2985A-32DBVT
LP2985A-33DBVR
LP2985A-33DBVT
LP2985A-50DBVR
LP2985A-50DBVT
TOP-SIDE
MARKING‡
PREVIEW
PREVIEW
PREVIEW
LPJ_
−40°C to 125°C
A grade:
1% tolerance
3V
3.1 V
3.2 V
3.3 V
5V
PREVIEW
PREVIEW
PREVIEW
PREVIEW
LPK_
PREVIEW
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
‡ DBV: The actual top-side marking has one additional character that designates the assembly/test site.
2
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
LP2985
150 mA LOW NOISE, LOW DROPOUT REGULATOR
WITH SHUTDOWN
SLVS522C − JULY 2004 − REVISED OCTOBER 2004
ORDERING INFORMATION (continued)
TJ
PART
GRADE
VOUT
(NOM)
2.5 V
2.6 V
2.7 V
2.8 V
2.85 V
3V
3.1 V
3.2 V
3.3 V
5V
2.5 V
2.6 V
2.7 V
2.8 V
2.85 V
3V
3.1 V
3.2 V
3.3 V
−40°C to 125°C
A grade:
1% tolerance
5V
2.5 V
2.6 V
2.7 V
2.8 V
2.85 V
3V
3.1 V
3.2 V
3.3 V
5V
2.5 V
2.6 V
2.7 V
2.8 V
2.85 V
3V
3.1 V
3.2 V
3.3 V
5V
NanoFree
NanoFree − WCSP
0.30-mm Bump
(YZU, Pb-free)
Reel of 3000
NanoFree − WCSP
NanoFree
0.30-mm Bump (YEU)
Reel of 3000
NanoFree
NanoFree − WCSP
0.17-mm Bump
(YZQ, Pb-free)
Reel of 3000
NanoStar − WCSP
NanoStar
0.17-mm Bump (YEQ)
Reel of 3000
PACKAGE†
ORDERABLE
PART NUMBER
LP2985A-25YEQR
LP2985A-26YEQR
LP2985A-27YEQR
LP2985A-28YEQR
LP2985A-285YEQR
LP2985A-30YEQR
LP2985A-31YEQR
LP2985A-32YEQR
LP2985A-33YEQR
LP2985A-50YEQR
LP2985A-25YZQR
LP2985A-26YZQR
LP2985A-27YZQR
LP2985A-28YZQR
LP2985A-285YZQR
LP2985A-30YZQR
LP2985A-31YZQR
LP2985A-32YZQR
LP2985A-33YZQR
LP2985A-50YZQR
LP2985A-25YEUR
LP2985A-26YEUR
LP2985A-27YEUR
LP2985A-28YEUR
LP2985A-285YEUR
LP2985A-30YEUR
LP2985A-31YEUR
LP2985A-32YEUR
LP2985A-33YEUR
LP2985A-50YEUR
LP2985A-25YZUR
LP2985A-26YZUR
LP2985A-27YZUR
LP2985A-28YZUR
LP2985A-285YZUR
LP2985A-30YZUR
LP2985A-31YZUR
LP2985A-32YZUR
LP2985A-33YZUR
LP2985A-50YZUR
TOP-SIDE
MARKING‡
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
‡ YEQ/YZQ, YEU/YZU: The actual top-side marking has three preceding characters to denote year, month, and sequence code, and one
following character to designate the assembly/test site. Pin 1 identifier indicates solder-bump composition (1 = SnPb,
•
= Pb-free).
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
3
SLVS522C − JULY 2004 − REVISED OCTOBER 2004
LP2985
150 mA LOW NOISE, LOW DROPOUT REGULATOR
WITH SHUTDOWN
ORDERING INFORMATION (continued)
TJ
PART GRADE
VOUT
(NOM)
2.5 V
2.6 V
2.7 V
2.8 V
2.85 V
−40°C to 125°C
Standard grade:
1.5% tolerance
3V
3.1 V
3.2 V
3.3 V
5V
SOT-23 (DBV)
PACKAGE†
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
ORDERABLE
PART NUMBER
LP2985-25DBVR
LP2985-25DBVT
LP2985-26DBVR
LP2985-26DBVT
LP2985-27DBVR
LP2985-27DBVT
LP2985-28DBVR
LP2985-28DBVT
LP2985-285DBVR
LP2985-285DBVT
LP2985-30DBVR
LP2985-30DBVT
LP2985-31DBVR
LP2985-31DBVT
LP2985-32DBVR
LP2985-32DBVT
LP2985-33DBVR
LP2985-33DBVT
LP2985-50DBVR
LP2985-50DBVT
LPF_
LPG_
TOP-SIDE
MARKING‡
PREVIEW
PREVIEW
PREVIEW
PREVIEW
PREVIEW
PREVIEW
PREVIEW
PREVIEW
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
‡ DBV: The actual top-side marking has one additional character that designates the assembly/test site.
4
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
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