EMC1701 High-Side Current-Sense and Internal 1C Temperature Monitor Datasheet PRODUCT FEATURES General Description Features The EMC1701 is a combination high-side current sensing High-side current sensor Bi-directional current measurement device with precision temperature measurement. It Measures source voltage and indicates power ratio measures the voltage developed across an external sense 1% current measurement accuracy resistor to represent the high-side current of a battery or Integrated over 82ms to 2.6sec with 11-bit resolution voltage regulator. The EMC1701 also measures the source 3V to 24V bus voltage range voltage and uses these measured values to present a Independent hardware set instantaneous current peak proportional power calculation. The EMC1701 contains detector (EMC1701-1 only) additional bi-directional peak detection circuitry to flag Software controls to program time duration and instantaneous current spikes with programmable time magnitude threshold duration and magnitude threshold. Finally, the EMC1701 Power supply options includes an internal diode channel for ambient temperature Bus or separately powered for low voltage operation measurement. Wide temperature operating range: -40C to +85C Both current sensing and temperature monitoring include Internal temperature monitor two tiers of protection: one that can be masked and causes 1C accuracy (-5C < T < 85C) A the ALERT pin to be asserted, and the other that cannot be ALERT and THERM outputs for temperature, voltage, masked and causes the THERM pin to be asserted. and out-of-current limit reporting SMBus 2.0 interface Applications Pin-selectable SMBus Address Notebook and Desktop Computers Block Read and Write Industrial Available in a 12-pin 4mm x 4mm QFN RoHS Compliant Power Management Systems Package (EMC1701-1) Embedded Applications Available in a 10-pin MSOP RoHS Compliant Package (EMC1701-2) Block Diagram Peak Detection Current Limits ADDR SEL SMBus 13 - 15 bit SMCLK Current Registers Slave Internal ADC Analog Protocol Temp SMDATA Mux Diode Configuration Power Register ALERT THERM 11 - 15 bit Voltage and ADC Temp Registers Voltage and Temp Limits *EMC1701-1 only SMSC EMC1701 DATASHEET Revision 1.2 (09-27-10) SENSE+ SENSE- DUR SEL* TH SEL*High-Side Current-Sense and Internal 1C Temperature Monitor Datasheet Ordering Information: ORDERING NUMBER PACKAGE FEATURES EMC1701-1-KP-TR 12-pin 4mm x 4mm QFN Internal diode, current sensor, (Lead-free RoHS compliant) hardware set peak detector EMC1701-2-AIZL-TR 10-pin MSOP Internal diode, current sensor (Lead-free RoHS compliant) REEL SIZE IS 4,000 PIECES This product meets the halogen maximum concentration values per IEC61249-2-21 For RoHS compliance and environmental information, please visit www.smsc.com/rohs 80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123 Copyright 2010 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