LP2985-N_15 Datasheet, PDF (1/41 Pages) Texas Instruments – LP2985-N Micropower 150-mA Low-Noise Ultra-Low-Dropout Regulator in SOT-23 and DSBGA Packages Designed for Use with Very Low ESR Output Capacitors

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LP2985-N
SNVS018X – MARCH 2000 – REVISED MAY 2015
LP2985-N Micropower 150-mA Low-Noise Ultra-Low-Dropout Regulator in SOT-23 and
DSBGA Packages Designed for Use with Very Low ESR Output Capacitors
1 Features
•1 Input Voltage Range: 2.5 V to 16 V
• Ultra Low-Dropout Voltage
• Ensured 150 mA Output Current
• Smallest Possible Size (SOT-23 and DSBGA 0.5-
mm Pitch Packages)
• 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 and Laptop Computer
• Personal Digital Assistant (PDA)
• Camcorder, Personal Stereo, Camera
3 Description
The LP2985-N low noise linear regulator delivers up
to 150-mA output current and only requires 300-mV
dropout voltage of input to output. Using an optimized
VIP (Vertically Integrated PNP) process, the LP2985-
N delivers unequaled performance for all battery-
powered designs. The LP2985-N device provides 1%
tolerance precision output voltage with only 75 µA
quiescent current at 1 mA load and 850 µA at 150
mA load. By adding a 10-nF bypass capacitor, the
output noise can be reduced to 30 µV_RMS in a 30-kHz
bandwidth.
The LP2985-N is designed to work with a ceramic
output capacitor with equivalent series resistance
(ESR) as low as 5 mΩ. The devices are available
with fixed output voltage from 2.5 V to 6.1 V. Contact
Texas Instrument Sales for specific voltage option
needs.
The smallest SOT-23 and DSBGA packages are
available for absolute minimum board space.
Device Information⁽¹⁾
PART NUMBER PACKAGE
BODY SIZE
SOT-23 (5) 2.90 mm x 1.60 mm (NOM)
LP2985-N
DSBGA (5)
1.159 mm x 0.981 mm (MAX)
1.464 mm x 1.095 mm (MAX)
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
V_IN
C_IN
1 µF
IN
OUT
LP2985
GND
V_OUT
C_OUT
2.2 µF
ON/OFF
ON/OFF BYPASS
C_BYPASS
0.01 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.