Product category:
Power Supply ICs and Controllers
News Release from: Linear Technology Corp | Subject: LTC4101
Edited by the Electronicstalk Editorial
Team on 23 November 2006
SMBus battery charger delivers up to 4A
A fast, precision smart battery charger controller operates with or without a host microcontroller.
Linear Technology has introduced the LTC4101, a fast, precision smart battery charger controller that operates with or without a host microcontroller The IC is 100% compliant with Rev 1.1 SMBus specifications and meets the requirements of Smart Battery System (SBS) Level 2 charging functions
This article was originally published on Electronicstalk on 28 Jul 2004 at 8.00am (UK)
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It is optimised for 3 to 5.5V charging voltages, suitable for single-cell Li-ion and three- and four-cell nickel-chemistry batteries.
It is capable of fast charging up to 4A with 0.8% voltage accuracy and 4% current accuracy.
Synchronous switching operation provides high efficiency charging from a wide input supply voltage range of 6 to 28V.
The LTC4101 is housed in a small 24-pin SSOP package and is ideal for use in portable computers and instruments.
For flexibility, the LTC4101 integrates a 10bit DAC for charge current programming and an 11bit DAC for charge voltage programming.
Using the charger's input current limit feature, a maximum charge rate is achieved without overloading the input supply, such as a wall adapter.
The SMBus interface remains alive when the input power is removed and responds to all SMBus activity directed to it, including SafetySignal status, which in tandem with the IC automatically monitors the battery temperature, connectivity and battery type information.
The LTC4101 is rated for operation from -40 to +85C.
Pricing starts at US $5.00 each in 1000-piece quantities. Request a free brochure from Linear Technology Corp ...
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