EnerChip CC CBC3105

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DS-72-21 Rev E

Page 2 of 12

Preliminary

Electrical Properties

EnerChip Backup Output voltage:

3.3V

Energy Capacity (typical):

5µAh

Recharge time to 80%:

10 minutes

Charge/Discharge cycles:

>5000 to 10% discharge

Physical Properties

Package size:

4mm x 5mm

Operating temperature:

-20°C to +70°C

Storage temperature:

-40°C to +125°C

Functional Block Diagram

Figure 2: EnerChip CC CBC3105 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.

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.