ATAVRSB202 Atmel, ATAVRSB202 Datasheet - Page 2

• Manufacturer Part Number: ATAVRSB202
• Description: KIT BATT MGMT FOR ATMEGA32HVB
• Manufacturer: Atmel

Specifications of ATAVRSB202

• Main Purpose: *
• Embedded: *
• Utilized Ic / Part: *
• Primary Attributes: *
• Secondary Attributes: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

BATTERY MANAGEMENT SOLUTIONS
Battery management made smart!
Atmel’s battery management solutions give designers and users significant benefits in addition to safe
operation.
Safety
Atmel’s high accuracy analog functions combined with several layers of safety functions ensures the safest
operation of the lithium-ion batteries.
Communication
Communication with the battery enables advanced functions that can be used to improve the safety as
well as extend the battery life. Such functions are authentication, communication with smart chargers, Gas
gauging, Battery history and the possibility to do field upgrades of the code or battery parameters.
Gas gauging
For applications that require a controlled shut down of the system, gas gauging is the solution. Notebook
PC’s need to store user data, digital cameras need to retract the zoom-lens and close the lens protection,
and smart phones can still be operative if the non-vital functions are powered down early enough.
Authentication
To ensure safe detection of potentially unsafe copy batteries, authentication should be used. When detect-
ing a unsafe battery, it can be charged and discharged in a safe way.
History log
During the lifetime of a product, warranty claims sometimes happen. If the battery includes an MCU, the
battery performance history and usage log will be of great help during battery analysis.
Flexibility
Since the Lithium-ion battery is still a young technology, the programmable microcontroller solution offers
full flexibility to support new regulations.
Accuracy and safety
Accuracy and safety are two major functions that need to be considered for a successful battery manage-
ment system. The gas gauge enabled battery management devices have a very accurate internal voltage
reference, enabling voltage protection with an absolute accuracy of ±25 mV over the entire temperature and
120
100
80
60
3.9
4
Charging Voltage (V)
4.1
4.2
4.3
voltage range, and ±12.5 mV over the 0-60°C
range. This enables the battery to deliver maxi-
mum amount of energy without risking damage
to the device or the user by over charging or too
deep discharging. With an absolute accuracy
of ±12.5 mV, Atmel’s battery management so-
lutions are able to safely use 95% of the avail-
able battery energy. If the accuracy is reduced
to ±100 mV, only 70% of the energy can be
used. To simplify manufacturing, calibration
values are recorded and stored in the device
by Atmel during chip testing. This enables
customers to get the maximum performance
of the chip with a minimal calibration effort.
Everywhere You Are
®