R5641 Series
2-Cell to 4-Cell Li-ion Battery Second Protection IC
R5641 Series
2-Cell to 4-Cell Li-ion Battery Second Protection IC
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Description
The R5641 is an overcharge protection IC for 2- to 4-series cell Li-ion / Li-polymer rechargeable battery pack, with built-in high-accuracy voltage detection circuits and delay circuits. Controlling the supply voltage to the CTLC pin can control the COUT pin output. The shutdown detection can reduce the supply current to the minimum.
- Reducing the supply current to 0.2 µA or less after shutdown detection can achieve the longer battery life.
- Temperature protection enabled with an external PTC thermistor.
- Be adaptable to 30 V input voltage by using high-voltage process.
Spec
| Operating Input Voltage | 4.0 V to 20 V (Maximum Rating: 30 V) | ||
| Number of Cells | 2,3,4 | ||
| Supply Current | Typ. 2.8 µA | ||
| Shutdown Detection Voltage | Typ. 2.5 V ± 0.3 V, 3.7 V ± 0.3 V | ||
| Shutdown Current | Max. 0.2 µA | ||
| Overcharge Detection Voltage | 4.10 V to 4.70 V (0.005 V Steps) | ||
| Overcharge Detection Voltage Accuracy | ±0.016 V (Ta = 25°C) ±0.025 V (0°C ≤ Ta ≤ 60°C) |
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| Overcharge Detection Delay Time | 2 s, 4 s, 6 s | ||
| Overcharge Restoration Voltage | VDET1 to VDET1 -0.4 V (0.05 V Steps) Min. 4.05 V (Shutdown detection voltage = 3.7 V) |
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| Package | DFN2020-8C | ||
| CTLC Detection Delay Time | 2 ms | ||
| Output Form | CMOS Output | ||
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: 4-cell Protection Circuit
Quality & Packages
| Product Name | Compatibility | Package | Marking | Reliability |
|---|---|---|---|---|
| R5641Lxxxxx-TR |
|
DFN2020-8C | See datasheet | R5641L |
- 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
R5641 Series