NB7200 Series
2-cell Li-ion Battery Protection IC with High-accuracy Overcurrent Detection

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  • Description

    The NB7200 is a two-cell Li- ion / polymer battery protection IC providing overcharge, overdischarge and charge / discharge overcurrent detections. Major features of this device include charge / discharge overcurrent detectors with high-accuracy of ±1.0 mV.

    Lower-resistance of sense resistor by overcurrent detector achieves heat reduction on the board, and low consumption current and low standby current achieve longer driving time with batteries of small capacity.

  • 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. 2.0 µA
    Standby Current Max. 0.2 µA
    Overcharge Detection Voltage 4.2 V to 4.8 V
    Overcharge Detection Voltage Accuracy ±15 mV
    Overcharge Detection Delay Time 1024 ms
    Overdischarge Detection Voltage 2.0 V to 3.2 V
    Overdischarge Detection Voltage Accuracy ±35 mV
    Overdischarge Detection Delay Time 32 ms, 64 ms, 128 ms, 256 ms, 512 ms
    Discharge Overcurrent Detection Voltage VDET3-1: 0.0030 V to 0.0300 V
    VDET3-2: 0.010 V to 0.090 V
    Discharge Overcurrent Detection Voltage Accuracy VDET3-1: ±1.0 mV
    VDET3-2: ±2 mV (0.010 V to 0.040 V), ±5% (0.040 V to 0.050 V), ±2.5 mV (0.050 V to 0.090 V)
    Discharge Overcurrent Detection Delay Time VDET3-1: 12 ms, 128 ms, 256 ms, 512 ms, 3584 ms
    VDET3-2: 16 ms
    Charge Overcurrent Detection Voltage -0.0300 V to -0.0030 V
    Charge Overcurrent Detection Voltage Accuracy ±1.0 mV
    Charge Overcurrent Detection Delay Time 8 ms, 16 ms, 32 ms
    Short Detection Voltage 0.020 V to 0.100 V
    Short Detection Voltage Accuracy ±4 mV
    Short Detection Delay Time 0.27 ms, 0.53 ms
    Conditions for Overcharge Restoration Auto Release
    Conditions for Overdischarge Restoration Auto Release
    Package DFN1616-8-GM
    0 V Battery Charging Permission / Inhibition

    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