CBC3112-D7C-TR5 Cymbet Corporation, CBC3112-D7C-TR5 Datasheet - Page 11

• Manufacturer Part Number: CBC3112-D7C-TR5
• Description: IC BATT SOLID ST ENERCHIP 20DFN
• Manufacturer: Cymbet Corporation
• Series: EnerChip™ CCr

Specifications of CBC3112-D7C-TR5

• Voltage - Output: 3.3V
• Capacity: 12µAh
• Operating Temperature: -20°C ~ 70°C
• Package / Case: 20-DFN
• Output Voltage: 3.3 V
• Termination Style: SMD/SMT
• Battery Cell Size: 7 mm x 7 mm
• For Use With: 859-1001 - ENERCHIP CC EVAL KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: CBC3112-D9C-TR5; CBC3112-D9C-TR5

EnerChip charging and backup power switchover threshold for 2.5 to 5.5 volt operation is selected by changing
the value of R2 (see Figure 7). To determine the backup switchover point, set the value of R1 to 200kΩ and
choose the value of R2 according to Figure 8. For example, to set a 3.0V trip point: If R1=200 kΩ then R2 = R1
x 0.72 = 144kΩ. Figure 7 shows a Mode 2 circuit with standard value resistors of 200kΩ and 143kΩ.
To determine the backup switchover hysteresis for Mode 2 operation, use Figure 9.
DS-72-04 Rev B
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6
5
4
3
2
1
0
Figure 9: Mode 2 Hysteresis as a Function of R2/R1
0.1
Figure 8: Mode 2 Resistor Selection Graph
0.09
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
Battery Switchover Threshold Voltage vs. R2/R1
0
0.2
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
Hysteresis in Battery Switchover Threshold
0.3
0.4
Voltage vs. R2/R1 Ratio
0.5
R2/R1 Ratio
R2/R1 Ratio
0.6
Ratio
0.7
0.8
0.9
1
1
1.1
1.1
EnerChip CC CBC3112
Hysteresis
Trip point
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