emc2103-3-kp-tr Standard Microsystems Corp., emc2103-3-kp-tr Datasheet - Page 5
emc2103-3-kp-tr
Manufacturer Part Number
emc2103-3-kp-tr
Description
Emc2103 Rpm-based Fan Controller With Hardware Thermal Shutdown
Manufacturer
Standard Microsystems Corp.
Datasheet
1.EMC2103-3-KP-TR.pdf
(85 pages)
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RPM-Based Fan Controller with HW Thermal Shutdown
Datasheet
List of Figures
Figure 1.1 EMC2103 Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 2.1 EMC2103-1 Pin Diagram (12 Pin QFN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 2.2
EMC2103-2 Pin Diagram (16 pin QFN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 4.1 SMBus Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 5.1 System Diagram for EMC2103 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 5.2 Block Diagram of Critical / Thermal Shutdown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 5.3 Fan Control Look-Up Table Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 5.4 RPM based Fan Speed Control Algorithm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 5.5 Spin Up Routine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 5.6 Ramp Rate Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 5.7 Diode Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 7.1 Preliminary 12 pin QFN 4mm x 4mm Package Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 71
Figure 7.2 Preliminary 12 Pin QFN 4mm x 4mm Package Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Figure 7.3 Recommended PCB Footprint 12-pin QFN 4mm x 4mm. . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Figure 7.4 Preliminary 16 Pin QFN 4mm x 4mm Package Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 74
Figure 7.5 Preliminary 16 Pin QFN 4mm x 4mm Package Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Figure 7.6 Recommended PCB Footprint 16-pin QFN 4mm x 4mm. . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
SMSC EMC2103
5
Revision 0.88 (06-30-08)
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