R5462 Series
High Accuracy 2-Cell Li-ion Battery Protection IC

  • Description

    The R5462 Series are high voltage CMOS-based protection ICs for over-charge/discharge of rechargeable two-cell Li-ion/Lithium polymer, further include a short protection for preventing large external short circuit current and the protection circuits against the excess discharge-current and excess charge current. Each of these ICs is composed of six detectors, a temperature detector, reference units, a delay circuit, a short circuit protector, an oscillator, a counter, and logic circuits. The Over-charge detector threshold is high accuracy such as ±10mV. DFN(PL)1820-6B package is available.

  • 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. 4.0 µA
    Standby Current Max. 0.1 µA or Max. 2.0 µA
    Overcharge Detection Voltage 3.65 V to 4.32 V
    Overcharge Detection Voltage Accuracy ±10 mV
    Overcharge Detection Delay Time 1 s
    Overdischarge Detection Voltage 2.0 V to 3.2 V
    Overdischarge Detection Voltage Accuracy ±1.0%
    Overdischarge Detection Delay Time 128 ms
    Discharge Overcurrent Detection Voltage 0.05 V to 0.20 V
    Discharge Overcurrent Detection Voltage Accuracy ±10 mV
    Discharge Overcurrent Detection Delay Time 12 ms
    Charge Overcurrent Detection Voltage -0.2 V to -0.1 V
    Charge Overcurrent Detection Voltage Accuracy ±20 mV
    Charge Overcurrent Detection Delay Time 8 ms
    Short Detection Voltage Typ. 1.0 V
    Short Detection Delay Time 300 µs
    Conditions for Overcharge Restoration Voltage Release
    Conditions for Overdischarge Restoration Latch / Voltage Release
    Package DFN(PL)1820-6B
    0 V Charge Available / Unavailable

    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 Short-circuit Current Detection,Delay Time Shortening