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LP3999ITL-3.3/NOPB-LP3999ITLX-1.8/NOPB
Low Noise 150mA Voltage Regulator for RF/Analog Applications. 5-DSBGA -40 to 125
LP3999 LoadCBYPASS
10 nF
1.0 uF
1.0 PF
VIN
VOUT
GND
VEN
LP3999
www.ti.com SNVS207E –JUNE 2003–REVISED MAY 2013
LP3999 Low Noise 150mA Voltage Regulator for RF/Analog Applications
Checkfor Samples: LP3999
1FEATURES APPLICATIONS 5 pin DSBGA Package • GSM Portable Phones Stable with Ceramic Capacitor • CDMA Cellular Handsets Logic Controlled Enable • Wideband CDMA Cellular Handsets Fast Turn-on • Bluetooth Devices Thermal-overload and short-circuit protection • Portable Information Appliances −40to +125°C junction temperature range for • Handheld MP3 Devices
operation
DESCRIPTION
KEY SPECIFICATIONS The LP3999 regulator is designed to meet the
requirements of portable wireless battery-powered
• 2.5Vto 6.0V Input Range applications and will provide an accurate output
• Accurate Output Voltage; ±75mV/ 2% voltage with low noise and low quiescent current.
60 mV Typical Dropout with 150 mA Load. Vout Ideally suited for powering RF/Analog devices this
device will also be usedto meet more general circuit
> 2.5Vrequirements.
• Virtually Zero Quiescent Current when
Disabled For battery powered applications the low dropout and
low ground current providedby the device allows the
• 10 μVrms Output Noise Over 10Hzto 100kHz lifetimeof the batteryto be maximized.The inclusion
• Stable witha1 μF Output Capacitor of an Enable(disable) control can be used by the
• Ensured 150 mA Output Current system to further extend the battery lifetime by
reducing the power consumption to virtually zero.
• Fast Turn-on Time; 140 μs (Typ.)Should the application requirea device with an active
disable function please referto device LP3995.
The LP3999 also features internal protection against
short-circuit currents and over-temperature
conditions.
Typical Application Circuit
