EMC2300 Fan Control Device with High Frequency PWM and Temperature Monitors Datasheet PRODUCT FEATURES 3.3 Volt Operation (5 Volt Tolerant Input Buffers) Temperature Monitor Monitoring of Two Remote Thermal Diodes (+/- 3 deg SMBus 2.0 Compliant Interface (Fixed, not C accuracy) Discoverable) with Three Slave Address Options Internal Ambient Temperature Measurement Fan Control Limit Comparison of all Monitored Values PWM (Pulse width Modulation) Outputs (3) Interrupt Pin for out-of-limit Temperature Indication Fan Tachometer Inputs (4) Voltage Monitor Programmable automatic fan control based on Monitors VCC and VCCP temperature Limit Comparison of all Monitored Values Backwards compatible with fans requiring lower Interrupt Pin for out-of-limit Voltage Indication frequency PWM drive XOR Tree Test Mode High frequency fan support for 4 wire fans One fan can be controlled from as many as 3 16-Pin SSOP Lead-Free RoHS Compliant Package temperature zones Fan ramp rate control for acoustic noise reduction Power Savings Modes Two monitoring modes: continuous or cycling (for power savings) Two low power modes when monitoring if off: Sleep and Shutdown ORDER NUMBERS: EMC2300-AZC FOR 16 PIN, SSOP LEAD-FREE ROHS COMPLIANT PACKAGE EMC2300-AZC-TR FOR 16 PIN, SSOP LEAD-FREE ROHS COMPLIANT PACKAGE (TAPE AND REEL) 2,800 UNITS FOR 13 INCH REEL, 97 UNITS PER TUBE SMSC EMC2300 DATASHEET Revision 0.32 (06-23-08) Fan Control Device with High Frequency PWM and Temperature Monitors Datasheet 80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123 Copyright 2008 SMSC or its subsidiaries. All rights reserved. Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information sufficient for construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no responsibility is assumed for inaccuracies. SMSC reserves the right to make changes to specifications and product descriptions at any time without notice. Contact your local SMSC sales office to obtain the latest specifications before placing your product order. The provision of this information does not convey to the purchaser of the described semiconductor devices any licenses under any patent rights or other intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated version of SMSC s standard Terms of Sale Agreement dated before the date of your order (theTerms of Sale Agreemen). The product may contain design defects or errors known as anomalies which may cause the product s functions to deviate from published specifications. Anomaly sheets are available upon request. SMSC products are not designed, intended, authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe property damage. Any and all such uses without prior written approval of an Officer of SMSC and further testing and/or modification will be fully at the risk of the customer. Copies of this document or other SMSC literature, as well as the Terms of Sale Agreement, may be obtained by visiting SMSCs website at