R5460x2 Series
2-Cell Li-ion Battery Protection IC

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  • Description

    The R5460x2 Series are high voltage CMOS-based protection ICs for over-charge/discharge of rechargeable two-cell Lithium-ion (Li+) / Lithium polymer, further include a short circuit protection circuit 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 voltage detectors, a reference unit, a delay circuit, a short circuit protector, an oscillator, a counter, and a logic circuit. In addition to SOT-23-6 packages, DFN(PL)1820-6 is also available.

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  • Spec
    Operating Input Voltage 1.5 V to 10.0 V (Absolute Maximum Rating: 12 V)
    Charger Negative Input Voltage -30 V
    Number of Cells 2
    Supply Current Typ. 4.0 µA
    Standby Current R5460x2xxxC/F: Max. 0.1 µA
    R5460x2xxxA/D/E: Max. 2.0 µA
    Overcharge Detection Voltage R5460x2xxxA/C/E/F: 4.1 V to 4.5 V (0.005 V Steps)
    R5460x2xxxD: 3.5 V to 4.0 V (0.005 V Steps)
    Overcharge Detection Voltage Accuracy ±25 mV (Ta = 25°C)
    ±30 mV (-5°C ≤ Ta ≤ 55°C)
    Overcharge Detection Delay Time 1.0 s
    Overdischarge Detection Voltage 2.0 V to 3.0 V (0.005 V Steps)
    Overdischarge Detection Voltage Accuracy ±2.5%
    Overdischarge Detection Delay Time 128 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 -0.10 V, -0.20 V, -0.40 V
    Charge Overcurrent Detection Voltage Accuracy ±30 mV or ±40 mV
    Charge Overcurrent Detection Delay Time 8 ms
    Short Detection Voltage Typ. 1.1 V
    Short Detection Delay Time Typ. 300 µs
    Conditions for Overcharge Restoration Voltage Release
    Conditions for Overdischarge Restoration Latch / Voltage Release
    Package DFN(PL)1820-6, SOT-23-6
    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.

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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 2
Functions Short-circuit Current Detection,Delay Time Shortening