LP2951-33-Q1 Datasheet, PDF (2/30 Pages) Texas Instruments – Adjustable Micropower Voltage Regulators With Shutdown

LP2951-33-Q1, LP2951-50-Q1
SLVSAW6E – JUNE 2011 – REVISED NOVEMBER 2014
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......................................................... 3
6.1 Absolute Maximum Ratings ..................................... 3
6.2 Handling Ratings....................................................... 3
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 4
6.6 Typical Characteristics .............................................. 6
7 Detailed Description ............................................ 12
7.1 Overview ................................................................. 12
7.2 LP2951-xx-Q1 Functional Block Diagram............... 13
7.3 Feature Description................................................. 14
7.4 Device Functional Modes........................................ 15
8 Application and Implementation ........................ 16
8.1 Application Information............................................ 16
8.2 Typical Application ................................................. 16
9 Power Supply Recommendations...................... 19
10 Layout................................................................... 19
10.1 Layout Guidelines ................................................. 19
10.2 Layout Example .................................................... 19
11 Device and Documentation Support ................. 19
11.1 Related Links ........................................................ 19
11.2 Trademarks ........................................................... 19
11.3 Electrostatic Discharge Caution ............................ 19
11.4 Glossary ................................................................ 19
12 Mechanical, Packaging, and Orderable
Information ........................................................... 20
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision D (April 2013) to Revision E
Page
• 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................................................................ 1
Changes from Revision C (February 2013) to Revision D
Page
• Deleted unreleased devices ................................................................................................................................................... 1
• Added the THERMAL INFORMATION table .......................................................................................................................... 4
Changes from Revision B (December 2012) to Revision C
Page
• Deleted P/N LP2951-Q1 from page header ........................................................................................................................... 1
• Deleted ORDERING INFORMATION table............................................................................................................................ 3
Changes from Revision A (July 2012) to Revision B
Page
• Changed LP2951-33QDRGRQ1 From: Preview To: Active ................................................................................................... 3
Changes from Original (June, 2011) to Revision A
Page
• Removed continuous from input voltage range parameter description; changed max values for V_IN and V_SHDN from
30 to 35................................................................................................................................................................................... 3
2
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