Datasheet
Table Of Contents
2.2PF
SHDN
GND
IN
OUT
FAULT
100k
2.2PF
CERAMIC
V
IN
V
O
CC
33n
F
LP3982
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SNVS185D –FEBRUARY 2002–REVISED APRIL 2013
LP3982 Micropower, Ultra Low-Dropout, Low-Noise, 300 mA CMOS Regulator
Check for Samples: LP3982
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FEATURES
DESCRIPTION
The LP3982 low-dropout (LDO) CMOS linear
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• MAX8860 Pin, Package and Spec. Compatible
regulator is available in 1.8V, 2.5V, 2.77V, 2.82V,
• WSON Space Saving Package
3.0V, 3.3V, and adjustable versions. They deliver 300
• 300 mA Output Current
mA of output current. Packaged in an 8-Pin VSSOP,
the LP3982 is pin and package compatible with
• 120 mV Typical Dropout @ 300 mA
Maxim's MAX8860. The LM3982 is also available in
• 90 μA Typical Quiescent Current
the small footprint WSON package.
• 1 nA Typical Shutdown Mode
The LP3982 suits battery-powered applications
• 60 dB Typical PSRR
because of its shutdown mode (1nA typ), low
• 2.5V to 6V Input Range
quiescent current (90 μA typ), and LDO voltage (120
mV typ). The low dropout voltage allows for more
• 120μs Typical Turn-on Time
utilization of a battery’s available energy by operating
• Stable with Small Ceramic Output Capacitors
closer to its end-of-life voltage. The LP3982's PMOS
• 37 μV RMS Output Voltage Noise (10 Hz to 100
output transistor consumes relatively no drive current
kHz)
compared to PNP LDO regulators.
• Over-Temperature/Over-Current Protection
This PMOS regulator is stable with small ceramic
• ±2% Output Voltage Tolerance
capacitive loads (2.2 μF typ).
These devices also include regulation fault detection,
APPLICATIONS
a bandgap voltage reference, constant current limiting
and thermal overload protection.
• Wireless Handsets
• DSP Core Power
• Battery Powered Electronics
• Portable Information Appliances
Application Circuit
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2002–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.