LP3999
www.ti.com
SNVS207E –JUNE 2003–REVISED MAY 2013
LP3999 Low Noise 150mA Voltage Regulator for RF/Analog Applications
Check for Samples: LP3999
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FEATURES
APPLICATIONS
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5 pin DSBGA Package
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GSM Portable Phones
Stable with Ceramic Capacitor
Logic Controlled Enable
CDMA Cellular Handsets
Wideband CDMA Cellular Handsets
Bluetooth Devices
Fast Turn-on
Thermal-overload and short-circuit protection
Portable Information Appliances
Handheld MP3 Devices
−40 to +125°C junction temperature range for
operation
DESCRIPTION
KEY SPECIFICATIONS
The LP3999 regulator is designed to meet the
requirements of portable wireless battery-powered
applications and will provide an accurate output
voltage with low noise and low quiescent current.
Ideally suited for powering RF/Analog devices this
device will also be used to meet more general circuit
requirements.
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2.5V to 6.0V Input Range
Accurate Output Voltage; ±75mV / 2%
60 mV Typical Dropout with 150 mA Load. Vout
> 2.5V
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Virtually Zero Quiescent Current when
Disabled
For battery powered applications the low dropout and
low ground current provided by the device allows the
lifetime of the battery to be maximized.The inclusion
of an Enable(disable) control can be used by the
system to further extend the battery lifetime by
reducing the power consumption to virtually zero.
Should the application require a device with an active
disable function please refer to device LP3995.
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10 μVrms Output Noise Over 10Hz to 100kHz
Stable with a 1 μF Output Capacitor
Ensured 150 mA Output Current
Fast Turn-on Time; 140 μs (Typ.)
The LP3999 also features internal protection against
short-circuit
conditions.
currents
and
over-temperature
Typical Application Circuit
LP3999
C3
V
V
IN
IN
C1
A3
V
1.0 mF
OUT
1.0 uF
A1
Enable Control,
Active high
C
Load
BYPASS
V
EN
GND
B2
10 nF
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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 © 2003–2013, Texas Instruments Incorporated