CBC910
Power Manager ASIC
Charge Pump and Battery Management ASIC
Features
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Power Manager with Charge Control
Built-in Battery Protection
Temperature Compensated Charge Control
Adjustable Switchover Voltage
Charges Battery Over a Wide Supply Range
Low Standby Power
CBC-910-BUC solder bumped version available
Eco-Friendly, RoHS Compliant
The CBC910 is a power management solution
that provides battery backup control and power
management for systems requiring power bridging
and/or secondary power.
During normal operation, the CBC910 delivers a
controlled voltage using an internal charge pump that
operates from 1.5 V to 5.5 V. An ENABLE pin allows
for activation and deactivation of the charge pump
using an external control line in order to minimize
current consumption when battery charge current is
not needed.
When the primary power supply dips below a user-
defined threshold voltage, the CBC910 will signal
this event and route the battery voltage to V
OUT
.
The CBC910 also has battery protection circuitry to
protect an attached battery from being discharged
too deeply.
The CBC910 is available in an 8-pin VDFN package
and as a bare die having 9 bond pads.
Preliminary
Applications
• Standby supply
for non-volatile SRAM, Real-time
clocks, controllers, supply supervisors, and other
system-critical components.
• Wireless sensors and RFID tags
and other
powered, low duty cycle applications.
• Localized power source
to keep microcontrollers
and other devices alert in standby mode.
• Power bridging
to provide back-up power to
system during exchange of main batteries.
• Consumer appliances
that have real-time
clocks; provides switchover power from main
supply to backup battery.
• Business and industrial systems
such as:
network routers, point-of-sale terminals, single-
board computers, test equipment, multi-function
printers, industrial controllers, and utility meters.
• Energy Harvesting
by coupling the energy
storage device with energy transducers such as
solar panels.
Figure 1 - Typical CBC910 Applica-
tion Circuit Using External EnerChip
Rechargeable Battery as a Backup
Power Source for a Real-Time Clock
DS-72-11 Rev 5
©2012 Cymbet Corporation • Tel: +1-763-633-1780 • www.cymbet.com
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