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R5478N242CD

RICOH
Part Number R5478N242CD
Manufacturer RICOH
Description Li-ION/POLYMER 1CELL PROTECTOR
Published Mar 11, 2015
Detailed Description Li-ION/POLYMER 1CELL PROTECTOR R5475N/R5478N SERIES No. EA-291-121009 OUTLINE The R5475N/R5478Nxxxxx Series are high ...
Datasheet PDF File R5478N242CD PDF File

R5478N242CD
R5478N242CD

Overview
Li-ION/POLYMER 1CELL PROTECTOR R5475N/R5478N SERIES No.
EA-291-121009 OUTLINE The R5475N/R5478Nxxxxx Series are high voltage CMOS-based protection ICs for over-charge/discharge of rechargeable one-cell Lithium-ion (Li+) / Lithium polymer excess load current, further include a short circuit protector for preventing large external short circuit current and Excess discharge-current.
Each of these ICs is composed of three voltage detectors, a reference unit, a delay circuit, a short circuit protector, an oscillator, a counter, and a logic circuit.
When the over-charge voltage crosses the detector threshold from a low value to a high value, the output of COUT pin switches to low level after internal fixed delay time.
The conditions to release over-charge detector are different by mask options.
In terms of so called “Latch function” version, after detecting over-charge, the detector can be reset and the output of COUT becomes "H" when a kind of load is connected to VDD after a charger is ...


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