LP2985_10 Datasheet, PDF (1/27 Pages) Texas Instruments – 150-mA LOW-NOISE LOW-DROPOUT REGULATOR WITH SHUTDOWN

LP2985
www.ti.com .......................................................................................................................................................... SLVS522M – JULY 2004 – REVISED MARCH 2009
150-mA LOW-NOISE LOW-DROPOUT REGULATOR WITH SHUTDOWN
FEATURES
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• 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
• Stable With Low-ESR Capacitors, Including
Ceramic
• 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
• 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
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 1.8 V, 2.5 V, 2.8 V, 2.9 V, 3 V, 3.1 V, 3.3 V, 5 V,
and 10 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 overcurrent and
overtemperature 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.
• Small packaging: For the most space-constrained needs, the regulator is available in the SOT-23 package.
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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 © 2004–2009, Texas Instruments Incorporated