DS2741N(2008) 查看數據表（PDF） - Maxim Integrated
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DS2741N Datasheet PDF : 9 Pages
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Current Monitor and Accumulator with
Integrated Sense Resistor
TEMPERATURE SENSOR CHARACTERISTICS
(VCC = +2.5V to +4.5V, TA = -20°C to +70°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
Temperature Error
MIN TYP MAX UNITS
±5
°C
AC ELECTRICAL CHARACTERISTICS: I2C INTERFACE
(2.5V ≤ VCC ≤ 4.5V, TA = -20°C to +70°C, timing referenced to VIL(MAX) and VIH(MIN). See Figure 4.)
PARAMETER
SCL Clock Frequency
Bus Free Time Between STOP
and START Conditions
SYMBOL
fSCL
(Note 5)
tBUF
CONDITIONS
MIN TYP MAX UNITS
0
400
kHz
1.3
μs
Hold Time (Repeated) START
Condition
Low Period of SCL
High Period of SCL
Data Hold Time
Data Setup Time
START Setup Time
SDA and SCL Rise Time
SDA and SCL Fall Time
STOP Setup Time
SDA and SCL Capacitive
Loading
tHD:STA
tLOW
tHIGH
tHD:DAT
tSU:DAT
tSU:STA
tR
(Note 6)
tF
tSU:STO
CB
(Note 6)
(Note 6)
0.6
1.3
0.6
0
100
0.6
20 +
0.1CB
20 +
0.1CB
0.6
μs
μs
μs
0.9
μs
ns
μs
300
ns
300
ns
μs
400
pF
Note 1: All voltages are referenced to GND. Currents entering the IC are specified positive and currents exiting the IC are negative.
Note 2: Compensation of the internal sense resistor value for initial tolerance and temperature coefficient of -20°C to +70°C can
reduce the maximum reportable magnitude to 2.5A.
Note 3: Current sampling ceases for 2.5ms every 144ms to allow the ADC to measure temperature.
Note 4: Typical value for tERR1 is specified at 3.6V and +25°C, max value is specified for 0°C to +50°C. Max value for tERR2 is
specified for -20°C to +70°C.
Note 5: Interface timing shown is for fast-mode (400kHz) operation. This device is also backward compatible with standard-mode
I2C timing.
Note 6: CB—Total capacitance of one bus line in pF; timing referenced to 0.1 x VCC and 0.9 x VCC.
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