1 Features
1• Fully integrated 2-, 3-, 4-, and 5-series Super
Capacitor Manager
• Can be used with up to 9-series capacitors
without individual integrated capacitor monitoring
and balancing
• Active capacitor voltage balancing
– Prevents super capacitor overvoltage during
charging
• Capacitor health monitoring
– Capacitance learning
– ESR measurement
– Operation status
– State-of-charge
– State-of-health
– Charging voltage and current reports
– Safety alerts with optional pin indication
• Integrated protection monitoring and control
– Overvoltage
– Short circuit
– Excessive temperature
– Excessive capacitor leakage
• 2-wire SMBus serial communications
• High-accuracy 16-bit delta-sigma ADC with a 16-
channel multiplexer for measurement
– Used for voltage, current, and temperature
• Low power consumption
– < 660 μA in NORMAL operating mode
– < 1 μA in SHUTDOWN mode
• Wide operating temperature: –40°C to +85°C

2 Applications
• RAID systems
• Server blade cards
• UPS
• Medical and test equipment
• Portable instruments

3 Description
The Texas Instruments BQ33100 Super Capacitor
Manager is a fully integrated, single-chip solution that
provides a rich array of features for charge control,
monitoring, and protection for either 2-, 3-, 4-, or 5-
series super capacitors with individual capacitor
monitoring and balancing or up to 9-series capacitors
with only the stack voltage being measured. With a
small footprint of 7.8 mm × 6.4 mm in a compact 24-
pin TSSOP package, the BQ33100 maximizes
functionality and safety while dramatically increasing
ease of use and cutting the solution cost and size for
super capacitor applications.