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ADUCM350 bảng dữ liệu(PDF) 13 Page - Analog Devices

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ADUCM350 bảng dữ liệu(HTML) 13 Page - Analog Devices

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ADuCM350
Data Sheet
Rev. A | Page 12 of 40
POWER MANAGEMENT SPECIFICATIONS
The following tables cover the specifications for the power management section of the ADuCM350.
Power Supplies
Table 23. Power Supplies Specifications
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
SUPPLIES
VCCM_ANA/VCCM_DIG
2
3.6
V
VCCM_x pins connected to the CR2032 battery, main supply for ADuCM350
VCCM_ANA/VCCM_DIG
2.5
3.6
V
Battery operating range
VBACK
1.62
3.6
V
Super capacitor pin, back-up mode supply
VBUS
4.75
5
5.25
V
USB 5 V supply
VDD_IO
1.8
3.6
V
Supply for some digital I/O pads; see Table 35, I/O supply column for details
VLCDVDD
1.8
3.6
V
Supply for LCD I/O
Power Supply Monitoring
Table 24. Power Supply Monitoring Specifications
Parameter1
Min
Typ
Max
Unit
Test Conditions/Comments
VCCM PSM
Voltage Detection Range
1.7
3.2
V
100 mV step size
Hysteresis
±10
±100
mV
Trip Point Detection Accuracy
Hysteresis + 70
mV
VRTC PSM
Voltage Detection Range
1.55
1.7
V
100 mV step size
Hysteresis
±25
±100
mV
Trip Point Detection Accuracy
Hysteresis + 70
mV
VBACK PSM
Voltage Detection Range
1.7
3.2
V
100 mV step size
Hysteresis
±100
mV
Trip Point Detection Accuracy
Hysteresis + 70
mV
1
For details regarding these parameters, see the UG-587 hardware reference manual.
TRICKLE CHARGER
Table 25. Trickle Charger Specifications
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
CURRENT
Charge Current
0.48
mA
Limits load on button cell at power-up
Reverse Current
1
μA
VOLTAGE
Forward Voltage
40
120
mV
Where forward current reduces to zero



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