LP2982 Datasheet, PDF (1/28 Pages) National Semiconductor (TI) – Micropower 50 mA Ultra Low-Dropout Regulator

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LP2982
SNVS128K – MARCH 2000 – REVISED JUNE 2016
LP2982 50-mA Micropower Ultra-Low-Dropout LDO in SOT-23 Package
1 Features
•1 2.1-V to 16-V Input Voltage
• Ultra-Low-Dropout Voltage
• Ensured 50-mA Output Current
• Typical Dropout Voltage 180 mV at 80 mA
• Requires Minimum External Components
• < 1 μA Quiescent Current When Shut Down
• Low Ground Pin Current at All Loads
• Output Voltage Accuracy 1% (A Grade)
• High Peak Current Capability (150 mA Typical)
• Wide Supply Voltage Range (16 V Maximum)
• Low Z_OUT 0.3 Ω Typical (10 Hz to 1 MHz)
• Overtemperature and Overcurrent Protection
• −40°C to +125°C Junction Temperature Range
2 Applications
• Cellular Phones
• Palmtop and Laptop Computers
• Personal Digital Assistants (PDA)
• Camcorders, Personal Stereos, Cameras
3 Description
The LP2982 is a 50-mA, fixed-output voltage LDO
designed to provide ultra-low dropout and lower noise
in battery-powered applications.
Using an optimized vertically integrated PNP (VIP)
process, the LP2982 delivers unequaled performance
in all specifications critical to battery-powered
designs:
Dropout Voltage: Typically 120 mV at 50 mA load,
and 7 mV at 1 mA load.
Ground Pin Current: Typically 375 μA at 50 mA load,
and 80 μA at 1 mA load.
Sleep Mode: Less than 1-μA quiescent current when
ON/OFF pin is pulled low.
Precision Output: 1% tolerance output voltages
available (A grade).
Low Noise: By adding an external bypass capacitor,
output noise can be reduced to 30 μV (typical).
Device Information⁽¹⁾
PART NUMBER PACKAGE
BODY SIZE (NOM)
LP2982
SOT-23 (5)
2.90 mm × 1.60 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
V_IN
IN
C_IN
OUT
C_OUT
V_OUT
ON/OFF
ON
OFF
ON/OFF BYPASS
GND
C_BYPASS
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.