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LP2981 Datasheet

100-mA ULTRA-LOW DROPOUT REGULATOR

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LP2981
www.ti.com ......................................................................................................................................................... SLVS521F – JULY 2004 – REVISED AUGUST 2008
100-mA ULTRA-LOW DROPOUT REGULATOR WITH SHUTDOWN
FEATURES
1
Output Tolerance of
– 0.75% (A Grade)
– 1.25% (Standard Grade)
Ultra-Low Dropout, Typically
– 200 mV at Full Load of 100 mA
– 7 mV at 1 mA
Wide VIN Range…16 V Max
Low IQ…600 µA Typ at Full Load of 100 mA
Shutdown Current…0.01 µA Typ
Fast Transient Response to Line and Load
Overcurrent and Thermal Protection
High Peak Current Capability
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
PORTABLE APPLICATIONS
Mobile Phones
Laptops
Personal Digital Assistants (PDAs)
Digital Cameras and Camcorders
CD and MP3 Players
DBV (SOT-23) PACKAGE
(TOP VIEW)
VIN
GND
ON/OFF
1
2
3
5 VOUT
4 NC
NC − No connect; must be left open
DESCRIPTION/ORDERING INFORMATION
The LP2981 family of fixed-output, low-dropout regulators offers exceptional, cost-effective performance for both
portable and nonportable applications. Available in fixed voltages of 2.8 V, 3 V, 3.3 V, and 5 V, the family has an
output tolerance of 0.75% for the A-grade devices (1.25% for the standard grade) and is capable of delivering
100-mA continuous load current. Standard regulator features, such as overcurrent and overtemperature
protection, are included.
The LP2981 has features that make the regulator an ideal candidate for a variety of portable applications:
Low dropout: A PNP pass element allows a typical dropout of 200 mV at 100-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.
Small packaging: For the most space-constrained needs, the regulator is available in the SOT-23 package.
1
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.
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.
Copyright © 2004–2008, Texas Instruments Incorporated




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LP2981 Datasheet Preview

LP2981 Datasheet

100-mA ULTRA-LOW DROPOUT REGULATOR

No Preview Available !

LP2981
SLVS521F – JULY 2004 – REVISED AUGUST 2008 ......................................................................................................................................................... www.ti.com
TJ PART GRADE
A grade:
0.75% tolerance
–40°C to 125°C
Standard grade:
1.25% tolerance
ORDERING INFORMATION(1)
VOUT
(NOM)
2.8 V
2.9 V
3V
3.3 V
5V
2.8 V
2.9 V
3V
3.3 V
5V
PACKAGE (2)
SOT-23-5 – 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
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
LP2981A-28DBVR
LP2981A-28DBVT
LP2981A-29DBVR
LP2981A-29DBVT
LP2981A-30DBVR
LP2981A-30DBVT
LP2981A-33DBVR
LP2981A-33DBVT
LP2981A-50DBVR
LP2981A-50DBVT
LP2981-28DBVR
LP2981-28DBVT
LP2981-29DBVR
LP2981-29DBVT
LP2981-30DBVR
LP2981-30DBVT
LP2981-33DBVR
LP2981-33DBVT
LP2981-50DBVR
LP2981-50DBVT
TOP-SIDE
MARKING (3)
LP6_
LRB_
LP8_
LPC_
LPE_
LP5_
LP3_
LP7_
LPB_
LPD_
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
(3) The actual top-side marking has one additional character that designates the wafer fab/assembly site.
2 Submit Documentation Feedback
Copyright © 2004–2008, Texas Instruments Incorporated


Part Number LP2981
Description 100-mA ULTRA-LOW DROPOUT REGULATOR
Maker etcTI
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