LP2981-29 Datasheet, PDF (1/14 Pages) Texas Instruments – 100-mA ULTRA-LOW DROPOUT REGULATOR WITH SHUTDOWN

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FEATURES
• 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 V_IN Range…16 V Max
• Low I_Q…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
LP2981-29, LP2981-50, LP2981A-29, LP2981A-50
100-mA ULTRA-LOW DROPOUT REGULATOR
WITH SHUTDOWN
SLVS768 – MARCH 2007
PORTABLE APPLICATIONS
• Mobile Phones
• Laptops
• Personal Digital Assistants (PDAs)
• Digital Cameras and Camcorders
• CD and MP3 Players
DBV (SOT-23) PACKAGE
(TOP VIEW)
V_IN 1
GND 2
ON/OFF 3
5 V_OUT
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 2.9 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.
T_J
PART GRADE
A grade:
0.75% tolerance
–40°C to 125°C
Standard grade:
1.25% tolerance
V_OUT
(NOM)
2.9 V
5V
2.9 V
5V
ORDERING INFORMATION⁽¹⁾
PACKAGE ⁽²⁾
SOT-23-5 – DBV
SOT-23-5 – DBV
SOT-23-5 – DBV
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
ORDERABLE
PART NUMBER
LP2981A-29DBVR
LP2981A-29DBVT
LP2981A-50DBVR
LP2981A-50DBVT
LP2981-29DBVR
LP2981-29DBVT
LP2981-50DBVR
LP2981-50DBVT
TOP-SIDE
MARKING ⁽³⁾
LRB_
LPE_
LP3_
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, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
(3) The actual top-side marking has one additional character that designates the assembly/test site.
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 © 2007, Texas Instruments Incorporated