LP2992_15 Datasheet, PDF (1/33 Pages) Texas Instruments – LP2992 Micropower 250-mA Low-Noise Ultralow-Dropout Regulator in SOT-23 and WSON Packages Designed for Use with Very Low-ESR Output Capacitors

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LP2992
SNVS171H – NOVEMBER 2001 – REVISED JANUARY 2015
LP2992 Micropower 250-mA Low-Noise Ultralow-Dropout Regulator in SOT-23 and WSON
Packages Designed for Use with Very Low-ESR Output Capacitors
1 Features
•1 Input Voltage Range: 2.2 V to 16 V
• Output Voltage Range: 1.5 V to 5 V
• Wide Supply Voltage Range (16-V Maximum)
• Ultralow-Dropout Voltage
• Specified 250-mA Output Current
• Smallest Possible Size (SOT-23, WSON
Package)
• Requires Minimum External Components
• Stable With Low-ESR Output Capacitor
• < 1-µA Quiescent Current When Shut Down
• Low Ground Pin Current at All Loads
• Output Voltage Accuracy 1% (A Grade)
• High Peak Current Capability
• Low Z_OUT: 0.3-Ω Typical (10 Hz to 1 MHz)
• Overtemperature and Overcurrent Protection
• −40°C to 125°C Junction Temperature Range
• Custom Voltages Available
2 Applications
• Cellular Phone
• Palmtop/Laptop Computer
• Personal Digital Assistant (PDA)
• Camcorder, Personal Stereo, Camera
3 Description
The LP2992 is a 250-mA, fixed-output voltage
regulator designed to provide ultralow-dropout and
low noise in battery powered applications.
Using an optimized Vertically Integrated PNP (VIP)
process, the LP2992 delivers unequaled performance
in all specifications critical to battery-powered
designs:
• Dropout voltage: Typically 450 mV at 250-mA
load, and 5 mV at 1-mA load.
• Ground pin current: Typically 1500 µA at 250-mA
load, and 75 µA at 1-mA load.
• Enhanced stability: The LP2992 is stable with
output capacitor equivalent series resistance
(ESR) as low as 5 mΩ which allows the use of
ceramic capacitors on the output.
• Sleep mode: Less than 1-µA quiescent current
when ON/OFF pin is pulled low.
• Smallest possible size: SOT-23 and WSON
packages use absolute minimum board space.
• Precision output: 1% tolerance output voltages
available (A grade).
• Low noise: By adding a 10-nF bypass capacitor,
output noise can be reduced to 30 µV (typical).
• Multiple voltage options, from 1.5 V to 5 V, are
available as standard products. Consult factory for
custom voltages.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LP2992
WSON (6)
SOT-23 (5)
3.29 mm × 2.92 mm
2.90 mm × 1.60 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
V_IN
C_IN
1 µF
Simplified Schematic
IN
OUT
LP2992
GND
V_OUT
C_OUT
4.7 µF
V_ON/OFF
ON
OFF
ON/OFF BYPASS
C_BYPASS
4.7 µF
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.