Document
EMC1701
High-Side Current-Sense and Internal 1°C Temperature Monitor
PRODUCT FEATURES
General Description
The EMC1701 is a combination high-side current sensing device with precision temperature measurement. It measures the voltage developed across an external sense resistor to represent the high-side current of a battery or voltage regulator. The EMC1701 also measures the source voltage and uses these measured values to present a proportional power calculation. The EMC1701 contains additional bi-directional peak detection circuitry to flag instantaneous current spikes with programmable time duration and magnitude threshold. Finally, the EMC1701 includes an internal diode channel for ambient temperature measurement. Both current sensing and temperature monitoring include two tiers of protection: one that can be masked and causes the ALERT pin to be asserted, and the other that cannot be masked and causes the THERM pin to be asserted.
Datasheet
Features
High-side current sensor
— — — — — Bi-directional current measurement Measures source voltage and indicates power ratio 1% current measurement accuracy Integrated over 82ms to 2.6sec with 11-bit resolution 3V to 24V bus voltage range
Independent hardware set instantaneous current peak detector (EMC1701-1 only)
— Software controls to program time duration and magnitude threshold
www.DataSheet.net/
Power supply options
— Bus or separately powered for low voltage operation
Wide temperature operating range: -40°C to +85°C Internal temperature monitor ALERT and THERM outputs for temperature, voltage, and out-of-current limit reporting SMBus 2.0 interface
— Pin-selectable SMBus Address — Block Read and Write — ±1°C accuracy (-5°C < TA < 85°C)
Applications
Notebook and Desktop Computers Industrial Power Management Systems Embedded Applications
Available in a 12-pin 4mm x 4mm QFN RoHS Compliant Package (EMC1701-1) Available in a 10-pin MSOP RoHS Compliant Package (EMC1701-2)
Block Diagram
DUR_SEL* TH_SEL* Peak Detection Current Limits 13 - 15 bit Σ Δ ADC Current Registers SMBus Slave Protocol SENSE+ SENSE-
ADDR_SEL SMCLK SMDATA ALERT THERM
Internal Temp Diode
Analog Mux
Configuration
Power Register
11 - 15 bit Σ Δ ADC
Voltage and Temp Registers Voltage and Temp Limits
*EMC1701-1 only
SMSC EMC1701
DATASHEET
Revision 1.2 (09-27-10)
Datasheet pdf - http://www.DataSheet4U.co.kr/
High-Side Current-Sense and Internal 1°C Temperature Monitor Datasheet
Ordering Information:
ORDERING NUMBER EMC1701-1-KP-TR EMC1701-2-AIZL-TR
PACKAGE 12-pin 4mm x 4mm QFN (Lead-free RoHS compliant) 10-pin MSOP (Lead-free RoHS compliant)
FEATURES Internal diode, current sensor, hardware set peak detector Internal diode, current sensor
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
www.DataSheet.net/
80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631).