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CBC3112 Datasheet(PDF) 2 Page - Cymbet Corporation |
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CBC3112 Datasheet(HTML) 2 Page - Cymbet Corporation |
2 / 16 page EnerChip CC CBC3112 ©2009-2013 Cymbet Corporation • Tel: +1-763-633-1780 • www.cymbet.com DS-72-04 Rev F Page 2 of 16 Electrical Properties EnerChip Backup Output voltage: 3.3V Energy Capacity (typical): 12µAh Recharge time to 80%: 10 minutes Charge/Discharge cycles: >5000 to 10% discharge Physical Properties Package size: 7 mm x 7 mm Operating temperature: -20°C to +70°C Storage temperature: -40°C to +125°C (prior to 1st charge) Functional Block Diagram Figure 2: EnerChip CC CBC3112 Internal Block Diagram The EnerChip CC internal schematic is shown in Figure 2. The input voltage from the power supply (VDD) is applied to the charge pump, the control logic, and is compared to the user-set threshold as determined by the voltage on VMODE. VMODE is an analog input ranging from 0V to VDD. The ENABLE pin is a digital input that turns off the charge pump when low. VOUT is either supplied from VDD or the integrated EnerChip. RESET is a digital output that, when low, indicates VOUT is being sourced by the integrated EnerChip. CFLY is the flying capacitor in the voltage doubler circuit. The value of CFLY 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. |
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