EnerChip CC CBC3150
Electrical Properties
EnerChip Backup Output voltage:
Energy Capacity (typical):
Recharge time to 80%:
Charge/Discharge cycles:
Physical Properties
Package size:
Operating temperature:
Storage temperature:
3.3V
50μAh
20 minutes
>5000 to 10% discharge
9 mm x 9 mm
-20°C to +70°C
-40°C to +125°C (before 1st charge)
Functional Block Diagram
The EnerChip CC internal schematic is shown in Figure 2. The input voltage from the power supply (V DD ) is
applied to the charge pump, the control logic, and is compared to the user-set threshold as determined by the
voltage on V MODE . V MODE is an analog input ranging from 0V to V DD . The ENABLE pin is a digital input that turns
off the c harge pump when low. V OUT is either supplied from V DD or the integrated EnerChip energy storage
device. RESET is a digital output that, when low, indicates V OUT is being sourced by the integrated EnerChip.
C FLY is the flying capacitor in the voltage doubler circuit. The value of C FLY can be changed if the output
impedance of the EnerChip CC needs to be modified. The output impedance is dictated by 1/fC , where f is the
frequency of oscillation (typically 100kHz) and C is the capacitor value (typically 0.1μF). GND is system ground.
Figure 2: EnerChip CC CBC3150 Internal Block Diagram
DS-72-03 Rev F
?2009-2013 Cymbet Corporation ? Tel: +1-763-633-1780 ? www.cymbet.com
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