US91AEDC datasheet(2/12 Pages) MELEXIS

2 / 12 page

US90A / US91A

24V Hall IC Fan Driver

390109026302

Page 2 of 12

Data Sheet

Rev 002

Apr/07

Table of Contents

1 Functional Diagram ........................................................................................................ 1

2 General Description........................................................................................................ 1

3 Glossary of Terms .......................................................................................................... 3

4 Absolute Maximum Ratings ........................................................................................... 3

5 Pin Definitions and Descriptions................................................................................... 3

6 General Electrical Specifications .................................................................................. 4

7 Magnetic Specifications ................................................................................................. 4

8 Driver Output vs Magnetic Pole..................................................................................... 4

9 Detailed General Description ......................................................................................... 5

10 Unique Features............................................................................................................ 5

11 Performance Graphs .................................................................................................... 6

11.1 RDSON vs TJ...................................................................................................................................................................... 6

11.2 RDSON vs VDD.................................................................................................................................................................. 6

11.3 Magnetic parameters vs TJ .................................................................................................................................. 6

11.4 Magnetic parameters vs VDD............................................................................................................................... 6

11.5 IDD vs TJ............................................................................................................................................................................. 6

11.6 IDD vs VDD ......................................................................................................................................................................... 6

11.7 VOL vs TJ ........................................................................................................................................................................... 7

11.8 Power Dissipation vs. TA ....................................................................................................................................... 7

12 Application Information................................................................................................ 7

12.1 Typical application with pull-up resistor..................................................................... 7

12.2 Configuration for reverse voltage / ground hot-switch protection and enhanced ESD

module protection ............................................................................................................. 7

13 Application Comments ................................................................................................. 7

14 Standard information regarding manufacturability of Melexis products with

different soldering processes........................................................................................... 8

15 ESD Precautions ........................................................................................................... 8

16 Package Information..................................................................................................... 9

16.1 VK Package Information (4-pin TO92)......................................................................................................... 9

16.2 DC Package Information (8-pin narrow SOIC)..................................................................................... 10

16.3 VA Package Information (4-pin TO92 flat) .............................................................................................. 11

17 Disclaimer.................................................................................................................... 12

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