UCD3138A64 datasheet(2/84 Pages) TI2

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UCD3138128, UCD3138A64

SLUSBZ8B – JUNE 2014 – REVISED FEBRUARY 2017

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Product Folder Links: UCD3138128 UCD3138A64

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Table of Contents

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

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

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

Description ............................................................. 4

Product Family Comparison ................................. 5

Product Feature Overview .................................... 7

Pin Configuration and Functions ......................... 8

Specifications....................................................... 10

8.1

Absolute Maximum Ratings ................................... 10

8.2

Handling Ratings..................................................... 10

8.3

Recommended Operating Conditions ..................... 11

8.4

Thermal Information ................................................ 11

8.5

Electrical Characteristics......................................... 11

8.6

Timing Characteristics............................................. 13

8.7

PMBUS/SMBUS/IC Timing2.................................... 14

8.8

Timing Requirements .............................................. 14

8.9

Power On Reset (POR) / Brown Out Detect

(BOD) ....................................................................... 16

8.10

Typical Clock Gating Power Savings .................... 17

8.11

Typical Characteristics .......................................... 18

Detailed Description ............................................ 19

9.1

Overview ................................................................. 19

9.2

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

9.3

Feature Description................................................. 21

9.4

Device Functional Modes........................................ 46

9.5

9.6

Synchronous Rectifier MOSFET Ramp And IDE

Calculation ............................................................... 58

Applications and Implementation...................... 59

10.1

Application Information.......................................... 59

10.2

Typical Application ............................................... 60

Power Supply Recommendations ..................... 71

Layout................................................................... 71

12.1

Device Grounding and Layout Guidelines ............ 71

12.2

Layout Examples................................................... 72

Device and Documentation Support ................. 73

13.1

Device Support...................................................... 73

13.2

Documentation Support ........................................ 73

13.3

Trademarks ........................................................... 75

13.4

Electrostatic Discharge Caution ............................ 75

13.5

Glossary ................................................................ 75

Mechanical, Packaging, and Orderable

Information ........................................................... 75

3 Revision History

Changes from Revision A (June 2014) to Revision B

Page

•

Changed Device Grounding and Layout Guidelines. .......................................................................................................... 71

Changes from Original (June 2014) to Revision A

Page

•

Added device UCD313128 .................................................................................................................................................... 1

•

Changed Feature From: "64 kB Program Flash Derivative." To: "64 kB and 128 kB Program Flash Derivative..." .............. 1

•

Changed Feature From: 2-32 kB Program Flash Memory Banks To: 2-32 kB or 4-32 kB Program Flash Memory Banks .. 1

•

Added Feature: "Boot Flash Based Dual Memory..." ............................................................................................................. 1

•

Changed Feature From: 4 kB Data RAM To: 8 kB Data RAM .............................................................................................. 1

•

Changed Feature From: "8 kB Boot ROM Enables..." To: "4 kB Boot ROM Enables..." ....................................................... 1

•

Changed From: UCD3138A64 to UCD3138x throughout the document................................................................................ 4

•

Changed the Product Family Comparison table..................................................................................................................... 5

•

Changed title From: POWER ON RESET AND BROWN OUT (V33D pin, See Figure 3) To: POWER ON RESET

AND BROWN OUT (V33A pin, See Figure 3)...................................................................................................................... 12

•

Changed title From: POWER ON RESET AND BROWN OUT (V33A pin, See Figure 3) To: POWER ON RESET

AND BROWN OUT (V33A pin, See Figure 3)...................................................................................................................... 14

•

Changed From: V33D To: V33A in the definitions list following Figure 3 ........................................................................... 16

•

Changed paragraph 2 of the Memory section From: 2048x32-bit Boot ROM To: 1024x32-bit Boot ROM ........................ 19

•

Changed text in the Memory section description From: The availability of 64 kB of program Flash memory in 2-32

kB banks, enables the designers to implement dual images To: The availability of 64 kB or 128 kB of program Flash

memory in 2-32 kB or 4-32 kB banks, enables the designers to implement multiple images.............................................. 19

•

Added a 2 new paragraphs to the end of the Memory section description. ......................................................................... 19

•

Changed the Memory Map (After Reset Operation) to include Program Flash 2 and Program Flash 3 ............................ 55

•

Changed the Memory Map (Normal Operation) to include Program Flash 2 and Program Flash 3 ................................... 55

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