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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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EMC1702 데이터시트(PDF) 1 Page - Microchip Technology |
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EMC1702 데이터시트(HTML) 1 Page - Microchip Technology |
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1 / 60 page  2020 Microchip Technology Inc. DS20006455A EMC1702 High-Side Current-Sense and Dual 1°C Temperature Monitor General Description The EMC1702 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. It also measures the source voltage and uses these measured values to present a proportional power calculation. The EMC1702 contains additional bi- directional peak detection circuitry to flag instantaneous current spikes with programmable time duration and magnitude threshold. Finally, the EMC1702 includes an external diode channel for temperature measurement as well as an internal diode for ambient temperature measurements. The temperature measurement includes advanced features such as Resistance Error Correction (REC), Beta Compensation (to support CPU diodes requiring the BJT/transistor model including 45nm and 65nm processors), and automatic diode type detection. 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. Applications Notebook and Desktop Computers Industrial Power Management Systems Embedded Applications 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 — Software controls to program time duration and magnitude threshold Power supply options — Bus or separately powered for low voltage operation Wide temperature operating range: -40°C to +85°C One external temperature monitor — 1°C accuracy (20°C < TDIODE < 110°C) with 0.125°C resolution — Ideality factor setting — Support for 45nm and 65nm CPU diodes requiring the BJT/transistor model w/ beta compensation — Determines external diode type and optimal settings — Resistance Error Correction Internal temperature monitor — ±1°C accuracy (-5°C < TA < 85°C) 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 Available in a 12-pin 4mm x 4mm QFN RoHS Compliant Package Block Diagram Analog Mux External Temp Diode Internal Temp Diode SMBus Slave Protocol DP DN SMCLK SMDATA ADDR_SEL Peak Detection Voltage and Temp Registers Configuration 11 - 15 bit ADC 13 - 15 bit ADC Current Registers Current Limits Voltage and Temp Limits THERM ALERT Power Register |
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