R5435 Series
2-Cell to 3-Cell Li-ion Battery Second Protection IC

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  • Description

    R5435 Series are CMOS-based high voltage tolerant over-charge protection ICs for Li-ion/Li-polymer secondary battery. The R5435 can detect overcharge of 2-cell to 3-cell Li-ion/ Li-polymer batteries. The R5435 is consists of 3 voltage detectors, a voltage reference unit, an oscillator, a counter, a delay circuit, a logic circuit.

    When the over-charge is detected, after the IC internally fixed delay time, the output of COUT becomes "H". After detecting over-charge, when the cell voltage becomes lower than the over-charge released voltage, the over-charge state is released.

    If all the cells voltages become equal or less than the shutdown detector threshold, all the circuits are halted and shut down, as a result, the consumption current of IC itself (Shutdown current) is extremely reduced. By connect short 2 cells other than monitored cell, over-charge and released delay time can be shortened. The output type is CMOS.

  • Spec
    Operating Input Voltage 3.3 V to 15.0 V (Maximum Rating: 30 V)
    Number of Cells 2,3
    Supply Current Typ. 3.0 µA
    Shutdown Detection Voltage 3.5 V
    Shutdown Current 0.1 µA
    Overcharge Detection Voltage 4.10 V to 4.55 V (0.005 V Steps)
    Overcharge Detection Voltage Accuracy ±20 mV
    Overcharge Detection Delay Time 2 s, 4 s, 6 s
    Package DFN(PL)1616-6B, TSOT-23-6

    Protections / Functions

    Temperature Protection Reset Alarm Cell Balance Cascadable Open Wire Detection Wakeup Short-circuit Current Detection Delay Time Shortening
  • Technical
    • Typical Application

      Typical Application

  • Quality &
    • Refer to the datasheets for the details on the product.
    • The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.

Download Datasheet

Functional Description

Temperature Protection Temperature Protection
Reset Reset Function
Alarm Alarm Function
Cell Balance Cell Balance Function
Cascadable Cascade Connect Function
Open Wire Detection Open Wire Detect Function
Wakeup Wakeup Function
Short-circuit Current Detection Short-circuit Current Protection
Delay Time Shorting Output Delay Time Short Function

For more details, please refer to "Protecting Li-ion Batteries: Functions and Advantages".

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Category:Lithium-ion Battery Protection ICs

Features Second Protection
Cell 2,3
Functions Delay Time Shortening