SNVS185D – FEBRUARY 2002 – REVISED APRIL 2013
LP3982 Micropower, Ultra Low-Dropout, Low-Noise, 300 mA CMOS Regulator
Check for Samples:
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FEATURES
MAX8860 Pin, Package and Spec. Compatible
WSON Space Saving Package
300 mA Output Current
120 mV Typical Dropout @ 300 mA
90
μA
Typical Quiescent Current
1 nA Typical Shutdown Mode
60 dB Typical PSRR
2.5V to 6V Input Range
120μs Typical Turn-on Time
Stable with Small Ceramic Output Capacitors
37
μV
RMS Output Voltage Noise (10 Hz to 100
kHz)
Over-Temperature/Over-Current Protection
±2% Output Voltage Tolerance
DESCRIPTION
The LP3982 low-dropout (LDO) CMOS linear
regulator is available in 1.8V, 2.5V, 2.77V, 2.82V,
3.0V, 3.3V, and adjustable versions. They deliver 300
mA of output current. Packaged in an 8-Pin VSSOP,
the LP3982 is pin and package compatible with
Maxim's MAX8860. The LM3982 is also available in
the small footprint WSON package.
The LP3982 suits battery-powered applications
because of its shutdown mode (1nA typ), low
quiescent current (90
μA
typ), and LDO voltage (120
mV typ). The low dropout voltage allows for more
utilization of a battery’s available energy by operating
closer to its end-of-life voltage. The LP3982's PMOS
output transistor consumes relatively no drive current
compared to PNP LDO regulators.
This PMOS regulator is stable with small ceramic
capacitive loads (2.2
μF
typ).
These devices also include regulation fault detection,
a bandgap voltage reference, constant current limiting
and thermal overload protection.
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APPLICATIONS
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Wireless Handsets
DSP Core Power
Battery Powered Electronics
Portable Information Appliances
Application Circuit
V
IN
IN
2.22F
100k
OUT
2.22F
CERAMIC
V
O
SHDN
FAULT
GND
CC
33n
F
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Copyright © 2002–2013, Texas Instruments Incorporated
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.
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