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PDF EMC1701 Data sheet ( Hoja de datos )
| Número de pieza | EMC1701 | |
| Descripción | High-Side Current-Sense | |
| Fabricantes | SMSC | |
| Logotipo |  |
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EMC1701
High-Side Current-Sense and Internal
1°C Temperature Monitor
PRODUCT FEATURES
Datasheet
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.
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 (EMC1701-1 only)
— 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
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 Addresswww.DataSheet.net/
— Block Read and Write
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
Peak
Detection
Internal
Temp
Diode
Analog
Mux
13 - 15 bit
Σ Δ ADC
Configuration
11 - 15 bit
Σ Δ ADC
*EMC1701-1 only
Current Limits
Current Registers
Power Register
Voltage and
Temp Registers
Voltage and
Temp Limits
SMSC EMC1701
DATASHEET
SMBus
Slave
Protocol
ADDR_SEL
SMCLK
SMDATA
ALERT
THERM
Revision 1.2 (09-27-10)
Datasheet pdf - http://www.DataSheet4U.co.kr/
1 page  
High-Side Current-Sense and Internal 1°C Temperature Monitor
Datasheet
List of Figures
Figure 1.1
Figure 1.2
Figure 3.1
Figure 4.1
Figure 4.2
Figure 6.1
Figure 6.2
Figure 6.3
Figure 6.1
Figure 6.2
Figure 6.3
Figure 6.1
Figure 6.2
EMC1701 Pin Diagram 12-Pin QFN 4mm x 4mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
EMC1701 Pin Diagram 10-Pin MSOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
SMBus Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
EMC1701 System Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Peak Detection Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
12-Pin QFN 4mm x 4mm Package Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
12-Pin QFN 4mm x 4mm Package Dimensions and Notes . . . . . . . . . . . . . . . . . . . . . . . . . . 48
12-Pin QFN 4mm x 4mm PCB Footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
10-Pin MSOP Package Drawings (see Note 6.1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
10-Pin MSOP Package Dimensions and Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
10-Pin MSOP PCB Footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
EMC1701-1 Package Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
EMC1701-2 Package Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
www.DataSheet.net/
SMSC EMC1701
5
DATASHEET
Revision 1.2 (09-27-10)
Datasheet pdf - http://www.DataSheet4U.co.kr/
5 Page 
High-Side Current-Sense and Internal 1°C Temperature Monitor
Datasheet
2.1 Electrical Specifications
Table 2.2 Electrical Specifications
VDD = VBUS = 3V TO 24V, VPULLUP = 3V TO 5.5V, TA = -40°C TO 85°C,
ALL TYPICAL VALUES AT VDD = VPULLUP = 3.3V, VBUS = 12V, AND TA = 27°C UNLESS OTHERWISE NOTED.
CHARACTERISTIC SYMBOL
MIN
TYP MAX UNIT
CONDITIONS
DC POWER
Supply Voltage
VDD
3
VDD Pin Supply
Current
IDD
VDD Pin Supply
Current
IDD_
T_STANDBY
VDD Pin Supply
Current
IDD_ALL_
STANDBY
SENSE+ Pin Bias
Current
ISENSE+
SENSE- Pin Bias
Current
ISENSE-
Pull-up Voltage
Leakage Current (±)
VPULLUP
ILEAK
3
24
610 750
650 950
950 1100
750
www.DataSheet.net/
300
90
15
10 20
10
10
0
5.5
5
V
Temp conversions at 0.0625
uA
conversions / second,
dynamic averaging disabled
current sense active
Temp conversions at 4
uA
conversions / second,
dynamic averaging disabled
current sense active
Temp conversions at 8
uA
conversions / second,
dynamic averaging enabled
current sense active
Temp conversions disabled
uA (TMEAS / STOP = ‘1’)
current sense active
Temp conversions disabled
uA
(TMEAS / STOP = ‘1’)
Current sense disabled
(IMEAS / STOP = ‘1’)
uA
VSENSE = 0V, VDD = 3V to 24V,
Current sense active
uA
VSENSE = 0V, VDD = 3V to 24V,
current sense disabled
uA VDD = 0V
uA
VSENSE = 0V, VDD = 3V to 24V,
Current sense active
uA
VSENSE = 0V, VDD = 3V to 24V,
current sense disabled
uA VDD = 0V
V
Pull-up voltage for SMBus,
ALERT, and THERM pins
ALERT and THERM pins,
uA
SMDATA and SMCLK pins
powered or unpowered,
TA < 85°C
SMSC EMC1701
11
DATASHEET
Revision 1.2 (09-27-10)
Datasheet pdf - http://www.DataSheet4U.co.kr/
11 Page | ||
| Páginas | Total 54 Páginas | |
| PDF Descargar | [ Datasheet EMC1701.PDF ] | |
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