US890 Melexis Company, US890 Datasheet - Page 2

• Manufacturer Part Number: US890
• Description: Two-coil Fan Driver ? High Output Curren
• Manufacturer: Melexis Company

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 .................................................................................................... 7
12 Test conditions ............................................................................................................. 8
13 Application Information................................................................................................ 9
14 Application Comments ................................................................................................. 9
15 Standard information regarding manufacturability of Melexis products with
different soldering processes......................................................................................... 10
16 ESD Precautions ......................................................................................................... 10
17 VK Package Information (4-pin TO-92)...................................................................... 11
18 Disclaimer.................................................................................................................... 12
3901000890
Rev 002
11.1 R
11.2 R
11.3 Magnetic parameters vs T
11.4 Magnetic parameters vs V
11.5 I
11.6 I
12.1 V
12.2 R
12.3 I
12.4 FG/RD Output Low Voltage ...................................................................................... 8
13.1 Typical application circuit .......................................................................................... 9
13.2 Recommended circuit for ground disconnection protection....................................... 9
DD
DD
DD
DD
DSON
DSON
DSON
............................................................................................................................. 8
vs T
vs V
– operating ......................................................................................................... 8
........................................................................................................................ 8
vs T
vs V
A
DD
.................................................................................................................... 7
.................................................................................................................. 7
A
DD
............................................................................................................... 7
............................................................................................................. 7
A
DD
....................................................................................... 7
..................................................................................... 7
Two-Coil Fan Driver – High Output Current
Page 2 of 12
US890 / US891
Data Sheet
Sep/07