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R5475N - Li-ION/POLYMER 1CELL PROTECTOR

Datasheet Summary

Description

Pin No.

Output of over-discharge detection, CMOS output Pin for charger negative input Output of over-charge detection, CMOS output No Connection Power supply pin, the substrate voltage level of the IC.

Vss pin.

Features

  • Manufactured with High Voltage Tolerant Process Absolute Maximum Rating.
  • Low supply current Supply current (At normal mode) C version: (detecting over-discharge) 3０V Typ. ３.0µA Max. 0.1µA D/J/K version: (detecting over-discharge) Typ. 1.2μA/Max. 2.0μA.
  • High accuracy detector threshold Over-charge detector (Topt=25°C) ±25mV (Topt=-5 to 55°C) ±30mV Over-discharge detector ±2.5% Excess discharge-current detector ±15mV.
  • Variety of detector threshold Ov.

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Datasheet Details

Part number R5475N
Manufacturer RICOH
File Size 838.50 KB
Description Li-ION/POLYMER 1CELL PROTECTOR
Datasheet download datasheet R5475N Datasheet
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Full PDF Text Transcription

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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.
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