R5434 Series
2-Cell to 5-Cell Li-ion Battery Second Protection IC

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  • Description

    The R5434 is an overcharge protection IC for 2 to 5 serial Li-ion/Li-polymer secondary battery. When an overcharge is detected, after the IC internally fixed delay time, the output of COUT becomes "H". After detecting the overcharge, when the cell voltage becomes lower than the overcharge release voltage, the overcharge state is released. The output type is CMOS.

  • Spec
    Operating Input Voltage 4.0 V to 25.0 V (Maximum Rating: 30 V)
    Number of Cells 2,3,4,5
    Supply Current Typ. 3.0 µA
    Overcharge Detection Voltage 3.6 V to 4.6 V (0.005 V Steps)
    Overcharge Detection Voltage Accuracy ±25 mV
    Overcharge Detection Delay Time 1.5 s
    Conditions for Overcharge Restoration Voltage Release
    Package SON-8

    Protections / Functions

    Temperature Protection Reset Alarm Cell Balance Cascadable Open Wire Detection Wakeup Short-circuit Current Detection Delay Time Shortening
  • Technical
    • Typical Application: 5-cell Protection Circuit

      5-cell Protection Circuit

      R1 to R5: 330 Ω, C1 to C5: 0.1 µF

  • 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 2,3,4,5
Functions Delay Time Shortening
PLP Applicable