R5492 Series
1-Cell Li-ion Battery Protection IC

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  • Description

    The R5492 is a high voltage tolerance protection IC for overcharge, overdischarge, and overcurrent of a rechargeable one-cell Lithium-ion (Li+) / Lithium-polymer battery. The R5492 supports the voltage release type at overcharging / overdischarging.

    Each output delay time of overcharge, overdischarge, and overcurrent is fixed internally. But, the delay shortening is able to shorten the detection and the release delay times at overcharging / overdischarging. Especially, the overcharge detection delay time can be shorten to aprrox.1/90.

  • Spec
    Operating Input Voltage 1.5 V to 5.0 V (Maximum Rating: 30 V)
    Number of Cells 1
    Supply Current Typ. 4.0 µA
    Standby Current Max. 0.5 µA
    Overcharge Detection Voltage 4.00 V to 4.50 V (0.005 V steps)
    Overcharge Detection Voltage Accuracy ±20 mV (Ta = 25°C)
    ±25 mV (-5°C < Ta < 55°C)
    Overcharge Detection Delay Time 1 s
    Overdischarge Detection Voltage 2.00 V to 3.00 V (0.1 V steps)
    Overdischarge Detection Voltage Accuracy ±2.5%
    Overdischarge Detection Delay Time 20 ms
    Discharge Overcurrent Detection Voltage 0.05 V to 0.20 V (0.005 V steps)
    Discharge Overcurrent Detection Voltage Accuracy ±15 mV
    Discharge Overcurrent Detection Delay Time 12 ms
    Charge Overcurrent Detection Voltage -0.20 V to -0.05 V (0.005 V steps)
    Charge Overcurrent Detection Voltage Accuracy ±15 mV
    Charge Overcurrent Detection Delay Time 8 ms
    Short Detection Voltage 0.8 V
    Short Detection Delay Time 300 µs
    Conditions for Overcharge Restoration Voltage Release
    Conditions for Overdischarge Restoration Voltage Release
    Package SOT-23-6
    0 V Charge Permission

    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.

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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 Battery Protection
Cell 1
Functions Short-circuit Current Detection,Delay Time Shortening