CBC3112-D7C Cymbet Corporation, CBC3112-D7C Datasheet
CBC3112-D7C
Specifications of CBC3112-D7C
CBC3112-D9C
Related parts for CBC3112-D7C
CBC3112-D7C Summary of contents
Page 1
... EnerChip voltage to V The EnerChip CC also has energy storage protection such as: circuitry to enable thousands of recharge cycles. The CBC3112 is a 20-pin Dual Flat No- lead (DFN) package, available in tubes, trays, or tape- and-reel for use with automatic insertion equipment DFN SMT Package: ...
Page 2
... 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 CBC3112 Internal Block Diagram ©2009-2010 Cymbet Corporation • Tel: +1-763-633-1780 • www.cymbet.com DS-72-04 Rev B 3 ...
Page 3
... VCHG ENABLE RESET CP CN Figure 3: EnerChip CC CBC3112 Package Pin-out ©2009-2010 Cymbet Corporation • Tel: +1-763-633-1780 • www.cymbet.com DS-72-04 Rev B Label V Positive EnerChip Terminal - Tie to Pin 4 BAT V OUT EnerChip Charge Voltage - Tie to Pin 1 and/or Optional CHG ENABLE V Mode Select for Backup Switchover Threshold ...
Page 4
... Variable - see App. Note 1025 Non-recoverable Recoverable - -20 - -40 Charge cycle 2 Charge cycle 1000 10% depth-of-discharge 5000 1000 50% depth-of discharge 2500 10% depth-of-discharge 500 50% depth-of-discharge Charge cycle 2 Charge cycle 1000 12 50µA discharge; 25°C EnerChip Discharge Characteristics EnerChip CC CBC3112 TYPICAL MAX UNITS - 6 +0 4.3 - 4 +0.3 OUT - 6.0 ...
Page 5
... OUT OUT CONDITION V rising from 2. <10µs V falling from 3. <100ns V =GND MODE MODE MODE DD V =GND MODE HYST MODE DD EnerChip CC CBC3112 MIN MAX UNITS - 3.5 µA - 6.0 µ µ µ MIN MAX UNITS V - 0.5 - Volts DD - 0.5 Volts ...
Page 6
... BAT 20mV below V BATCO I =1µA OUT I =1mA OUT V =4.1V BAT V =4.1V BAT OUT - pin is floating. Size the holding capacitor accordingly. OUT EnerChip CC CBC3112 MIN MAX UNITS 60 80 µ µs - 120 KHz (1) 150 300 Ω 4.075 4.125 V -2.0 -2.4 mV/º ...
Page 7
... Important timing diagrams for the EnerChip CC relationship between EnerChip Switchover Timing and EnerChip Disconnect from Load Timing are shown in Figure 4. Figure 4: EnerChip CC Switchover and Disconnect Timing Diagrams ©2009-2010 Cymbet Corporation • Tel: +1-763-633-1780 • www.cymbet.com DS-72-04 Rev B EnerChip CC CBC3112 Page ...
Page 8
... Timing diagrams for the EnerChip CC relationship between V becoming active are shown in Figure 5. Figure 5: Timing Diagrams for V ©2009-2010 Cymbet Corporation • Tel: +1-763-633-1780 • www.cymbet.com DS-72-04 Rev B EnerChip CC CBC3112 to RESET and ENABLE high to charge pump DD to RESET and Enable to Charge Pump Active. DD ...
Page 9
... EnerChip CC could flow, placing a parasitic load on the EnerChip that could dramatically reduce the effective backup operating time. The EnerChip CC supports 2 operational modes as shown in Figures 6 and 7. ©2009-2010 Cymbet Corporation • Tel: +1-763-633-1780 • www.cymbet.com DS-72-04 Rev B EnerChip CC CBC3112 is used to route during normal operation when main ON ...
Page 10
... Mode 1 Operation For use in 3.3 volt systems. The V switchover threshold at approximately 3.0 volts. Figure 6: CBC3112 Typical Circuit for Mode 1 Operation Mode 2 Operation Figure 7 shows the circuitry for user-selectable switchover threshold to a value between 2.5 and 5.0 volts. Use Figure 8 to determine the value of R1. To determine the amount of hysteresis from the EnerChip switchover threshold, use Figure 9 ...
Page 11
... Figure 9: Mode 2 Hysteresis as a Function of R2/R1 ©2009-2010 Cymbet Corporation • Tel: +1-763-633-1780 • www.cymbet.com DS-72-04 Rev B Ratio 0.3 0.4 0.5 0.6 0.7 0.8 0.9 R2/R1 Ratio Hysteresis in Battery Switchover Threshold Voltage vs. R2/R1 Ratio 1 R2/R1 Ratio EnerChip CC CBC3112 Trip point 1 1.1 Hysteresis 1.1 Page ...
Page 12
... Adding Power and Energy Capacity with Parallel EnerChips In some applications, additional EnerChip capacity might be needed. The schematic in Figure 11 shows how multiple EnerChips can be supported in parallel by a single EnerChip CC CBC3112. Note that C increased by 0.1µF for every additional EnerChip. Figure 11: EnerChip CC Providing Power Management for Multiple EnerChips © ...
Page 13
... See Figure 12 for location and dimensions of metal pad placement on the PCB. Figure 12: Recommend PCB Layout for the CBC3112-D7C Package (Dimensions in mm) ©2009-2010 Cymbet Corporation • Tel: +1-763-633-1780 • www.cymbet.com DS-72-04 Rev B ...
Page 14
... CBC3112 7mm x 7mm DFN Package Drawing and Dimensions ©2009-2010 Cymbet Corporation • Tel: +1-763-633-1780 • www.cymbet.com DS-72-04 Rev B EnerChip CC CBC3112 Notes: 1. Dimensions in millimeters. 2. Package dimensions do not include mold flash, protrusions, burrs or metal smearing. 3. Coplanarity applies to the exposed pad as well as the exposed terminals. Maximum coplanarity shall be 0 ...
Page 15
... CBC3112-D7C CBC3112-D7C-TR1 CBC3112-D7C-TR5 CBC3112-D7C-WP Disclaimer of Warranties The information provided in this data sheet is provided “As Is” and Cymbet Corporation disclaims all representations or warranties of any kind, express or implied, relating to this data sheet and the Cymbet EnerChip product described herein, including without limitation, the implied warranties of merchantability, fitness for a particular purpose, non-infringement, title, or any warranties arising out of course of dealing, course of performance, or usage of trade ...