R5660 Series
1-Cell Li-ion Battery Protection IC with High-accuracy Overcharge Protection

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  • Description

    The R5660 is a one-cell Li-ion / polymer battery protection IC provides overcharge, overdischarge, and discharge / charge overcurrent detections. One of the features of this device is a high-accuracy detection at overcharge and overcurrent. The supply current after overdischarge detection can be reduced to a minimum by stopping the internal circuits. The small WLCSP package is available.

    Key Benefits

    • Lower-resistance of Sense Resistor by Overcurrent Detector with Lower-voltage and High-accuracy: Achieving heat reduction on board
    • Low Consumption Current and Low Standby Current: Achieving longer driving time with a battery of small capacity

  • Spec
    Operating Input Voltage 1.5 V to 5.0 V (Maximum Rating: 12 V)
    Number of Cells 1
    Supply Current Typ. 2.5 µA
    Standby Current Max. 0.04 µA
    Overcharge Detection Voltage 4.2 V to 4.6 V (5 mV step)
    Overcharge Detection Voltage Accuracy ±10 mV (0°C ≤ Ta ≤ 50°C)
    Overcharge Detection Delay Time 1.0 s
    Overdischarge Detection Voltage 2.0 V to 3.4 V (50 mV step)
    Overdischarge Detection Voltage Accuracy ±2.0%
    Overdischarge Detection Delay Time 16 ms, 32 ms, 128 ms
    Discharge Overcurrent Detection Voltage 0.015 V to 0.050 V (1 mV step)
    0.050 V to 0.150 V (5 mV step)
    Discharge Overcurrent Detection Voltage Accuracy ±3 mV (0.015 V to 0.030 V)
    ±10% (0.030 V to 0.050 V)
    ±5 mV (0.050 V to 0.150 V)
    Discharge Overcurrent Detection Delay Time 8 ms, 16 ms, 32 ms, 128 ms, 512 ms
    Charge Overcurrent Detection Voltage −0.075 V to −0.030 V (5 mV step)
    −0.030 V to −0.015 V (1 mV step)
    Charge Overcurrent Detection Voltage Accuracy ±4 mV
    Charge Overcurrent Detection Delay Time 8 ms
    Short Detection Voltage 0.040 V to 0.300 V (5 mV step)
    Short Detection Voltage Accuracy ±5 mV
    Short Detection Delay Time 280 µs
    Conditions for Overcharge Restoration Latch
    Conditions for Overdischarge Restoration Latch
    Package WLCSP-6-P7
    0 V Battery Charging Permission
    Discharge Overcurrent Release Voltage Type selectable Auto Release / Latch

    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 1
Functions Short-circuit Current Detection,Delay Time Shortening