LP2981 Datasheet, PDF (1/17 Pages) National Semiconductor (TI) – Micropower 100 mA Ultra Low-Dropout Regulator

LP2981
www.ti.com ......................................................................................................................................................... SLVS521F – JULY 2004 – REVISED AUGUST 2008
100-mA ULTRA-LOW DROPOUT REGULATOR WITH SHUTDOWN
FEATURES
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• 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
• 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)
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 2.8 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.
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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