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LP2989LV Datasheet Preview

LP2989LV Datasheet

500-mA Ultra Low-Dropout Regulator

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LP2989LV
SNVS086K – MAY 2000 – REVISED JULY 2015
LP2989LV Micropower and Low-Noise, 500-mA Ultra Low-Dropout Regulator for Use With
Ceramic Output Capacitors
1 Features
1 2.1-V to 16-V Input Voltage Range
• Ultra-Low Dropout Voltage
• 500-mA Continuous Output Current
• Very Low Output Noise With External Capacitor
• < 0.8-µA Quiescent Current When Shut Down
• Low Ground Pin Current at All Loads
• 0.75% Output Voltage Accuracy (A Grade)
• High Peak Current Capability (800-mA typical)
• Overtemperature and Overcurrent Protection
40°C to +125°C Junction Temperature Range
2 Applications
• Notebooks and Desktop PCs
• PDAs and Palmtop Computers
• Wireless Communication Pins
• SMPS Post-Regulators
3 Description
The LP2989LV is a fixed-output 500-mA precision
LDO regulator designed for use with ceramic output
capacitors.
Output noise can be reduced to 18 μV (typical) by
connecting an external 10-nF capacitor to the bypass
pin.
Using an optimized Vertically Integrated PNP (VIP)
process, the LP2989LV delivers superior
performance:
Ground Pin Current: Typically 3 mA at 500-mA load,
and 110 µA at 100-µA load.
Sleep Mode: The LP2989LV draws less than 0.8-µA
quiescent current when SHUTDOWN pin is pulled
low.
ERROR Flag: The built-in ERROR flag goes low
when the output drops approximately 5% below
nominal.
Precision Output: Output voltage accuracy is 0.75%
(A grade) and 1.25% (standard grade) at room
temperature.
For output voltages greater than or equal to 2 V, see
the LP2989 (SNVS083) data sheet.
Device Information(1)
PART NUMBER PACKAGE
BODY SIZE (NOM)
LP2989LV
WSON (8)
SOIC (8)
4.00 mm x 4.00 mm
4.90 mm x 3.91 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application
*Capacitance values shown are minimum required to assure stability, but may be increased without limit. Larger
output capacitor provides improved dynamic response. See the Output Capacitor section.
**Shutdown must be actively terminated (see the Shutdown Input Operation section). Tie to IN (pin 4) if not use.
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.




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LP2989LV Datasheet Preview

LP2989LV Datasheet

500-mA Ultra Low-Dropout Regulator

No Preview Available !

LP2989LV
SNVS086K – MAY 2000 – REVISED JULY 2015
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 .............................................. 9
7.1 Overview ................................................................... 9
7.2 Functional Block Diagram ......................................... 9
7.3 Feature Description................................................... 9
7.4 Device Functional Modes........................................ 10
8 Application and Implementation ........................ 11
8.1 Application Information............................................ 11
8.2 Typical Application ................................................. 11
9 Power Supply Recommendations...................... 15
10 Layout................................................................... 16
10.1 Layout Guidelines ................................................. 16
10.2 Layout Example .................................................... 16
11 Device and Documentation Support ................. 18
11.1 Documentation Support ....................................... 18
11.2 Community Resources.......................................... 18
11.3 Trademarks ........................................................... 18
11.4 Electrostatic Discharge Caution ............................ 18
11.5 Glossary ................................................................ 18
12 Mechanical, Packaging, and Orderable
Information ........................................................... 19
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision J (April 2013) to Revision K
Page
• Changed "Wide Supply Voltage Range (16V Max)" to "2.1-V to 16-V Input Voltage Range" in Features ........................... 1
• Added Handling Rating 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
values; delete lead temperature from Ab Max (in POA); update pin names to TI nomenclature; removed reference to
VSSOP package option (no longer available for this part number) ...................................................................................... 1
• Changed caption for Figure 11 .............................................................................................................................................. 8
Changes from Revision I (April 2013) to Revision J
Page
• Changed Changed layout of National data sheet to TI format ............................................................................................ 15
2
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Part Number LP2989LV
Description 500-mA Ultra Low-Dropout Regulator
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