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LP2980-N Datasheet Preview

LP2980-N Datasheet

Micropower 50-mA Ultra-Low-Dropout Regulator

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LP2980-N
SNOS733P – APRIL 2000 – REVISED SEPTEMBER 2016
LP2980-N Micropower 50-mA Ultra-Low-Dropout Regulator in SOT-23 Package
1 Features
1 2.1-V to 16-V Input Voltage Range
• 5-V, 4.7-V, 3.3-V, 3-V, and 2.5-V Output Versions
• Ultra-Low-Dropout Voltage
• Output Voltage Accuracy 0.5% (A Grade)
• Ensured 50-mA Output Current
• Requires Only 1-μF External Capacitance
• < 1-μA Quiescent Current When Shutdown
• Low Ground Pin Current at All Load Currents
• High Peak Current Capability (150 mA Typical)
• Wide Supply Voltage Range (16 V Maximum)
• Fast Dynamic Response to Line and Load
• Low ZOUT Over Wide Frequency Range
• Overtemperature and Overcurrent Protection
40°C to 125°C Junction Temperature Range
2 Applications
• Cellular Phone
• Palmtop/Laptop Computer
• Personal Digital Assistant (PDA)
• Camcorder, Personal Stereo, Camera
3 Description
The LP2980-N is a 50-mA, fixed-output voltage
regulator designed specifically to meet the
requirements of battery-powered applications.
Using an optimized VIP (Vertically Integrated PNP)
process, the LP2980-N 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 to less than 0.18 V.
Minimum part count: Requires only a 1-μF capacitor
on the regulator output.
Precision output: Initial output voltage tolerance of
±0.5% (A grade).
5-V, 4.7-V, 3.3-V, 3-V, and 2.5-V versions available
as standard products.
Device Information(1)
PART NUMBER PACKAGE
BODY SIZE (NOM)
LP2980-N
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
VIN
CIN
1 µF
IN
OUT
LP2980
GND
VOUT
COUT
2.2 µF
ON/OFF
ON/OFF
NC
Copyright © 2016, Texas Instruments Incorporated
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.




etcTI

LP2980-N Datasheet Preview

LP2980-N Datasheet

Micropower 50-mA Ultra-Low-Dropout Regulator

No Preview Available !

LP2980-N
SNOS733P – APRIL 2000 – REVISED SEPTEMBER 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 5
6.6 Typical Characteristics .............................................. 7
7 Detailed Description ............................................ 12
7.1 Overview ................................................................. 12
7.2 Functional Block Diagram ....................................... 12
7.3 Feature Description................................................. 12
7.4 Device Functional Modes........................................ 13
8 Application and Implementation ........................ 14
8.1 Application Information............................................ 14
8.2 Typical Application ................................................. 14
9 Power Supply Recommendations...................... 22
10 Layout................................................................... 22
10.1 Layout Guidelines ................................................. 22
10.2 Layout Example .................................................... 22
11 Device and Documentation Support ................. 23
11.1 Device Support...................................................... 23
11.2 Receiving Notification of Documentation Updates 23
11.3 Community Resources.......................................... 23
11.4 Trademarks ........................................................... 23
11.5 Electrostatic Discharge Caution ............................ 23
11.6 Glossary ................................................................ 23
12 Mechanical, Packaging, and Orderable
Information ........................................................... 23
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision O (June 2015) to Revision P
Page
• Changed minor wording in Description for clarity................................................................................................................... 1
• Deleted input supply voltage (operating) row; deleted "(survival)" from rows of Abs Max table ........................................... 4
• Deleted lead temperature from Abs Max per new format rules.............................................................................................. 4
• Added "(operating") from ROC table; add second row for "Shutdown input voltage" to ROC ............................................... 4
• Added "High K" and footnote 2 to Thermal Information ........................................................................................................ 4
• Changed "...an output tolerance of %..." to "...an initial output voltage tolerance of ±0.5%..." ........................................... 12
• Deleted "Very high accuracy 1.23-V reference" .................................................................................................................. 12
• Changed "150 mA" to "50 mA" to correct typo from reformat (2 places) ............................................................................. 12
• Changed "...only 1 µA" to "...less than 1 µA"........................................................................................................................ 12
• Changed "... pulled low" to "...pulled to less than 0.18 V" ................................................................................................... 12
Changes from Revision N (December 2014) to Revision O
Page
• Changed pin names VOUT to OUT and VIN to IN per TI nomenclature; correct typos ....................................................... 1
• Changed format of ESD Ratings table .................................................................................................................................. 4
• Deleted (the TO-220 package alone will safely dissipate this) - no TO-220 package for this part ...................................... 20
Changes from Revision M (April 2013) to Revision N
Page
• Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section; add updated
Thermal Information .............................................................................................................................................................. 1
2
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Product Folder Links: LP2980-N
Copyright © 2000–2016, Texas Instruments Incorporated


Part Number LP2980-N
Description Micropower 50-mA Ultra-Low-Dropout Regulator
Maker etcTI
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