EMC1704-2-AP-TR Microchip

EMC1704 High-Side Current-Sense and Multiple 1C Temperature Monitor Datasheet PRODUCT FEATURES General Description Features High-side current sensor The EMC1704 is a combination high-side current sensing 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. It also measures the source voltage and 3V to 24V bus voltage range uses these measured values to present a proportional Independent hardware set instantaneous current peak power calculation. The EMC1704 contains additional bi- detector (EMC1704-2 only) directional peak detection circuitry to flag instantaneous Software controls to program time duration and current spikes with programmable time duration and magnitude threshold magnitude threshold. Finally, the EMC1704 includes up to Power supply options three (3) external diode channels and an internal Bus or separately powered for low voltage operation temperature sensor for temperature measurement. Wide temperature operating range: -40C to +85C The temperature measurement includes advanced features Up to three external temperature monitors such as Resistance Error Correction (REC), Beta 1C accuracy (20C < T < 110C) with 0.125C DIODE Compensation (to support CPU diodes requiring the resolution BJT/transistor model including 45nm and 65nm Ideality factor setting processors), and automatic diode type detection. Support for 45nm and 65nm CPU diodes requiring the BJT/transistor model w/ beta compensation Both current sensing and temperature monitoring include Determines external diode type and optimal settings two tiers of protection: one that can be masked and causes Resistance Error Correction the ALERT pin to be asserted, and the other that cannot be Anti-parallel diode support for additional diode options masked and causes the THERM pin to be asserted. Internal temperature monitor Applications 1C accuracy (-5C < T < 85C) A ALERT and THERM outputs for temperature, voltage, Notebook and Desktop Computers and out-of-current limit reporting Industrial SMBus 2.0 interface Power Management Systems Pin-selectable SMBus Address Embedded Applications Block Read and Write General Purpose I/O Available in a RoHS Compliant Package: 14-pin SOIC (EMC1704-1) or 16-pin 4mm x 4mm QFN (EMC1704-2) Block Diagram Peak Detection DP1 External DN1 Temp DP2 / DN3 Diodes DN2 / DP3 Current Limits ADDR SEL SMBus 13 - 15 bit SMCLK Current Registers Slave ADC Anti- Analog Protocol parallel SMDATA Mux diode Configuration Power Register ALERT THERM Internal 11-15 bit Voltage and Temp ADC Temp Registers Diode Voltage and Temp Limits * EMC1704-2 only EMC1704 DATASHEET DS20005239A SENSE+ SENSE- DUR SEL* TH SEL* GPIOHigh-Side Current-Sense and Multiple 1C Temperature Monitor Datasheet Ordering Information: ORDERING NUMBER PACKAGE FEATURES EMC1704-1-YZT-TR 14-pin SOIC Up to three external diodes, current (Lead-free ROHS compliant) sensor, software set peak detector EMC1704-2-AP-TR 16-pin 4mm x 4mm QFN Up to three external diodes, current (Lead-free ROHS compliant) sensor, hardware/software set peak detector 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 Please contact your SMSC sales representative for additional documentation related to this product such as application notes, anomaly sheets, and design guidelines. DS20005239A 2 EMC1704 DATASHEET