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REF1925, REF1930, REF1933, REF1941

SBOS697A – SEPTEMBER 2014 – REVISED JANUARY 2017

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Product Folder Links: REF1925 REF1930 REF1933 REF1941

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Copyright © 2014–2017, Texas Instruments Incorporated

Table of Contents

1

Features .................................................................. 1

2

Applications ........................................................... 1

3

Description ............................................................. 1

4

Revision History..................................................... 2

5

Device Comparison Table..................................... 3

6

Pin Configuration and Functions ......................... 3

7

Specifications......................................................... 4

7.1

Absolute Maximum Ratings ...................................... 4

7.2

ESD Ratings.............................................................. 4

7.3

Recommended Operating Conditions ....................... 4

7.4

Thermal Information .................................................. 4

7.5

Electrical Characteristics.......................................... 5

7.6

Typical Characteristics .............................................. 6

8

Parameter Measurement Information ................ 12

8.1

Solder Heat Shift ..................................................... 12

8.2

Thermal Hysteresis ................................................. 13

8.3

Noise Performance ................................................. 14

9

Detailed Description ............................................ 15

9.1

Overview ................................................................. 15

9.2

Functional Block Diagram ....................................... 15

9.3

Feature Description................................................. 15

9.4

Device Functional Modes........................................ 16

10

Applications and Implementation...................... 17

10.1

Application Information.......................................... 17

10.2

Typical Application ................................................ 17

11

Power-Supply Recommendations ..................... 22

12

Layout................................................................... 23

12.1

Layout Guidelines ................................................. 23

12.2

Layout Example .................................................... 23

13

Device and Documentation Support ................. 24

13.1

Documentation Support ........................................ 24

13.2

Related Links ........................................................ 24

13.3

Receiving Notification of Documentation Updates 24

13.4

Community Resources.......................................... 24

13.5

Trademarks ........................................................... 24

13.6

Electrostatic Discharge Caution ............................ 24

13.7

Glossary ................................................................ 24

14

Mechanical, Packaging, and Orderable

Information ........................................................... 25

4 Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Original (September 2014) to Revision A

Page

•

Changed Input to Output in I/O column of pin 1 row in Pin Functions table ......................................................................... 3

•

Added Storage temperature parameter to Absolute Maximum Ratings table (moved from ESD Ratings table)................... 4

•

Changed ESD Ratings table: changed title and updated table format .................................................................................. 4