NB7200 Series
2-cell Li-ion Battery Protection IC with High-accuracy Overcurrent Detection
NB7200 Series
2-cell Li-ion Battery Protection IC with High-accuracy Overcurrent Detection
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Provides at-a-glance product features, functions, and concepts.
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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 |
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| 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) |
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| Discharge Overcurrent Detection Delay Time | VDET3-1: 12 ms, 128 ms, 256 ms, 512 ms, 3584 ms VDET3-2: 16 ms |
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| 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 |
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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".
Technical Documents
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Typical Application
Quality & Packages
| Product Name | Compatibility | Package | Marking | Reliability |
|---|---|---|---|---|
| NB7200GMxxxxxE4S |
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DFN1616-8-GM | See datasheet | NB7200GMS |
- 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.
FAQ
Buy / Contact
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Purchase, Request for samples and documentsSales are made through distributors. Please contact your local distributors for any sales-related inquiry such as price.
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Available from 1 piece!Our electronic device products are available through our authorized online distributors.
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Technical Support
NB7200 Series