TPS22921, TPS22922, TPS22922B

SLVS749C – NOVEMBER 2008 – REVISED JANUARY 2015

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Table of Contents

8.14

Typical Characteristics .......................................... 10

1

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

9

Parameter Measurement Information ................ 19

2

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

10

Detailed Description ........................................... 20

3

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

10.1

Overview ............................................................... 20

4

Typical Application ................................................ 1

10.2

Functional Block Diagram ..................................... 20

5

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

10.3

Feature Description............................................... 20

6

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

10.4

Device Functional Modes...................................... 20

7

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

11

Application and Implementation........................ 21

8

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

11.1

Application Information.......................................... 21

8.1

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

11.2

Typical Application ............................................... 21

8.2

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

12

Power Supply Recommendations ..................... 24

8.3

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

13

Layout................................................................... 24

8.4

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

13.1

Layout Guidelines ................................................. 24

8.5

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

13.2

Layout Example .................................................... 24

8.6

Switching Characteristics: VIN = 0.9 V ...................... 6

14

Device and Documentation Support ................. 25

8.7

Switching Characteristics: VIN = 1 V ......................... 6

14.1

Related Links ........................................................ 25

8.8

Switching Characteristics: VIN = 1.1 V ...................... 7

14.2

Trademarks ........................................................... 25

8.9

Switching Characteristics: VIN = 1.2 V ...................... 7

14.3

Electrostatic Discharge Caution ............................ 25

8.10

Switching Characteristics: VIN = 1.8 V .................... 8

14.4

Glossary ................................................................ 25

8.11

Switching Characteristics: VIN = 2.5 V .................... 8

15

Mechanical, Packaging, and Orderable

8.12

Switching Characteristics: VIN = 3 V ....................... 9

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

8.13

Switching Characteristics: VIN = 3.6 V .................... 9

5 Revision History

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

Changes from Revision B (May 2012) to Revision C

Page

•

Added Pin Configuration and Functions section, ESD 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 A (December 2008) to Revision B

Page

•

Changed Feature From: Ultra-Low Quiescent Current: 78 nA at 1.8 V To: Ultra-Low Quiescent Current: Typical 78

nA at 1.8 V.............................................................................................................................................................................. 1

•

Changed Feature From: Typical 78 nA at 1.8 V To: Ultra-Low Shutdown Current: Typical 35 nA at 1.8 V .......................... 1

•

Changed Feature From: Six Terminal Wafer-Chip-Scale Package To: Six Terminal Wafer-Chip-Scale Package

(nominal dimensions shown - see addendum for details ....................................................................................................... 1

•

Changed Feature From: 0.5-mm Height To: 0.5-mm Height (YFP) ....................................................................................... 1

•

Changed TPS22921 QUICK OUTPUT DISCHARGE From: - To: No.................................................................................... 3

•

Changed the format of the ELECTRICAL CHARACTERISTICS Test Conditions From: VIN = 1-V to VIN = 1 V.................... 5

•

Deleted Note 1 - RL_CHIP = 120

Ω from all SWITCHING CHARACTERISTICS tables....................................................... 6

•

Changed Figure 50 title From: tOFF Response To: tON Response ........................................................................................ 17

Changes from Original (November 2008) to Revision A

Page

•

Added Note A to the TYPICAL APPLICATION circuit............................................................................................................ 1

2

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