LP2987 Datasheet, PDF (1/30 Pages) National Semiconductor (TI) – Micropower, 200 mA Ultra Low-Dropout Voltage Regulator with Programmable Power-On Reset Delay; Low Noise Version Available (LP2988)

LP2987, LP2988
www.ti.com
SNVS004J – MARCH 1999 – REVISED APRIL 2013
LP2987/LP2988 Micropower, 200 mA Ultra Low-Dropout Voltage Regulator with
Programmable Power-On Reset Delay; Low Noise Version Available (LP2988)
Check for Samples: LP2987, LP2988
FEATURES
1
•2 Ultra Low Dropout Voltage
• Power-ON Reset Delay Requires Only One
Component
• Bypass Pin for Reduced Output Noise
(LP2988)
• Specified Continuous Output Current 200 mA
• Specified Peak Output Current > 250 mA
• SOIC-8 and VSSOP-8 Surface Mount Packages
• <2 μA Quiescent Current when Shutdown
• Low Ground Pin Current at All Loads
• 0.5% Output Voltage Accuracy (“A” Grade)
• Wide Supply Voltage Range (16V Max)
• Overtemperature/overcurrent Protection
• −40°C to +125°C Junction Temperature Range
APPLICATIONS
• Cellular Phone
• Palmtop/Laptop Computer
• Camcorder, Personal Stereo, Camera
DESCRIPTION
The LP2987/8 are fixed-output 200 mA precision LDO
voltage regulators with power-ON reset delay which
can be implemented using a single external capacitor.
The LP2988 is specifically designed for noise-critical
applications. A single external capacitor connected to
the Bypass pin reduces regulator output noise.
Using an optimized VIP (Vertically Integrated PNP)
process, these regulators deliver superior
performance:
Dropout Voltage: 180 mV @ 200 mA load, and 1
mV @ 1 mA load (typical).
Ground Pin Current: 1 mA @ 200 mA load, and 200
μA @ 10 mA load (typical).
Sleep Mode: The LP2987/8 draws less than 2 μA
quiescent current when shutdown pin is held low.
Error Flag/Reset: The error flag goes low when the
output drops approximately 5% below nominal. This
pin also provides a power-ON reset signal if a
capacitor is connected to the DELAY pin.
Precision Output: Standard product versions of the
LP2987 and LP2988 are available with output
voltages of 5.0V, 3.8V, 3.3V, 3.2V, 3.0V, or 2.8V, with
specified accuracy of 0.5% (“A” grade) and 1%
(standard grade) at room temperature.
Block Diagram
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
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 © 1999–2013, Texas Instruments Incorporated