R5466 Series
2-Cell Li-ion Battery Protection IC with Alarm Function

  • Description

    The R5466 is high voltage CMOS-based ultra high precision protection ICs for overcharge/discharge voltage and current of rechargeable two-cell Lithium-ion (Li+) / Lithium polymer with alarm signal output. The R5466 has an alarm signal output, a temperature detection, an over-charge voltage detection, an over-discharge voltage/ discharge overcurrent detection and a charge overcurrent detection.

    When the over-charge alarm is detected, after the internal fixed delay time, the output of AOUT becomes "H" from high impedance at normal state. Further, with an external thermistor, if the temperature is 45°C or more, the over-charge alarm detector threshold shifts from normal temperature alarm detector threshold to the high temperature alarm detector threshold.

  • Spec
    Operating Input Voltage 1.5 V to 10.0 V (Maximum Rating: 12 V)
    Charger Negative Input Voltage -30 V
    Number of Cells 2
    Supply Current Typ. 5.0 µA
    Standby Current Max. 0.1 µA
    Overcharge Detection Voltage 3.6 V to 4.3 V
    Overcharge Detection Voltage Accuracy +20 mV/-25 mV
    Overcharge Detection Delay Time 1 s
    Overdischarge Detection Voltage 2.0 V to 3.0 V
    Overdischarge Detection Voltage Accuracy ±2.5%
    Overdischarge Detection Delay Time 128 ms
    Discharge Overcurrent Detection Voltage 0.05 V to 0.24 V
    Discharge Overcurrent Detection Voltage Accuracy ±15 mV
    Discharge Overcurrent Detection Delay Time 16 ms
    Charge Overcurrent Detection Voltage -0.22 V to -0.1 V
    Charge Overcurrent Detection Voltage Accuracy ±20 mV
    Charge Overcurrent Detection Delay Time 8 ms
    Short Detection Voltage 1.0 V
    Short Detection Delay Time 300 µs
    Conditions for Overcharge Restoration Voltage Release
    Conditions for Overdischarge Restoration Latch
    Package DFN(PL)2527-10
    0 V Charge Available

    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 Battery Protection
Cell 2
Functions Alarm,Short-circuit Current Detection,Delay Time Shortening