©2012 Cymbet Corporation • Tel: +1-763-633-1780 • www.cymbet.com

DS-72-11 Rev 5

Page 1 of 14

Charge Pump and Battery Management ASIC

CBC910

Power Manager ASIC

Features

• 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

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