Rainbow-electronics MAX34440 Manual do Utilizador descarregar pdf (Página 7)

PMBus 6-Channel Power-Supply Manager

MAX34440

DC ELECTRICAL CHARACTERISTICS (continued)

= 2.7V to 5.5V, T

= -40NC to +85NC, unless otherwise noted. Typical values are at V

= 3.3V, T

= +25NC, unless otherwise noted.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

ADC Internal Reference Initial

Accuracy (+25NC)

-1 +1 mV

ADC Full-Scale Input Voltage V

1.213 1.225 1.237 V

ADC Measurement Resolution V

LSB

300

ADC Bit Resolution 12 Bits

RS+ Input Resistance R

ADC Integral Nonlinearity INL

LSB

ADC Differential Nonlinearity DNL

LSB

ADC Offset V

OFFSET

LSB

Internal Temperature

Measurement Error

= -40NC to +85NC

-3 +3

Store Default All Time 37 ms

Nonvolatile Log Write Time 12 ms

Nonvolatile Log Delete Time 200 ms

Flash Endurance N

FLASH

= +50NC

20,000

Write

Cycles

Data Retention

= +50NC

100 Years

Voltage Sample Rate 5 ms

Current Sample Rate 200 ms

Temperature Sample Rate 1000 ms

Device Startup Time

Measurement from POR until monitoring

begins

12 ms

PWM Frequency Power supply 62.5 kHz

PWM Resolution Power supply 6 Bits

1 2 3 4 5 6 7 8 9 10 11 12 ... 42 43

MAX34440 1
43 43

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