EMC2103 datasheet(5/84 Pages) SMSC

Part #	EMC2103

Description	RPM-Based Fan Controller with HW Thermal Shutdown

Download	84 Pages

Scroll/Zoom	100%

Manufacturer	SMSC [SMSC Corporation]

Direct Link	http://www.smsc.com

Logo

5 / 84 page

RPM-Based Fan Controller with HW Thermal Shutdown

Datasheet

SMSC EMC2103

5

Revision 0.85 (01-29-08)

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 . . . . . . . . . . . . . . . . . . . . . . . . . 70

Figure 7.2 Preliminary 12 Pin QFN 4mm x 4mm Package Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Figure 7.3 Recommended PCB Footprint 12-pin QFN 4mm x 4mm. . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Figure 7.4 Preliminary 16 Pin QFN 4mm x 4mm Package Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 73

Figure 7.5 Preliminary 16 Pin QFN 4mm x 4mm Package Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Figure 7.6 Recommended PCB Footprint 16-pin QFN 4mm x 4mm. . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Similar Part No. - EMC2103

Manufacturer	Part #	Datasheet	Description
Microchip Technology	EMC2103	874Kb / 85P	RPM-Based Fan Controller with Hardware Thermal Shutdown 10/28/13
	EMC2103-1	2Mb / 44P	Analog & Interface Product Selector Guide 11/29/11
	EMC2103-1	2Mb / 44P	Analog and Interface Product Selector Guide 11/29/11
	EMC2103-1-KP-TR	874Kb / 85P	RPM-Based Fan Controller with Hardware Thermal Shutdown 10/28/13
SMSC Corporation	EMC2103-1-KP-TR	293Kb / 9P	RPM-Based Fan Controller with Hardware Thermal Shutdown

Manufacturer	Part #	Datasheet	Description
SMSC Corporation	EMC2102	1Mb / 52P	RPM-Based Fan Controller with HW Thermal Shutdown
SMSC Corporation	EMC2103DB	293Kb / 9P	RPM-Based Fan Controller with Hardware Thermal Shutdown
Microchip Technology	EMC2103	874Kb / 85P	RPM-Based Fan Controller with Hardware Thermal Shutdown 10/28/13
SMSC Corporation	EMC2112	930Kb / 65P	RPM-Based Linear Fan Controller with Hardware Thermal Shutdown
	EMC2106	1Mb / 106P	Dual RPM-Based Linear Fan Controller with Hardware Thermal Shutdown
	EMC2105	1Mb / 89P	RPM-Based High Side Fan Controller with Hardware Thermal Shutdown
	EMC2104	1Mb / 101P	Dual RPM-Based PWM Fan Controller with Hardware Thermal Shutdown
	EMC2105	1Mb / 90P	RPM-Based High Side Fan Controller with Hardware Thermal Shutdown
	EMC2106	2Mb / 106P	Dual RPM-Based Linear Fan Controller with Hardware Thermal Shutdown
	EMC2104	1Mb / 99P	Dual RPM-Based PWM Fan Controller with Hardware Thermal Shutdown