R5487 Series
1-Cell Li-ion Battery Protection IC
Description
The R5487/R5497 Series are high voltage tolerance CMOS-based protection IC for over-charge/discharge and over-current of rechargeable one-cell Lithium-ion (Li+)/Lithium polymer battery. The R5487/R5497 Series can detect over-charge/discharge of Li+ one-cell and excess load current, further include a short circuit protector for preventing large external short circuit current and the excess charge-current. The R5487/R5497 Series are composed of four voltage detectors, reference units, a delay circuit, a short circuit protector, an oscillator, a counter, and logic circuits. The output of Over-charge detector or Excess charge-current detector switches to "L" level after internally fixed delay time, when charged voltage crosses the detector threshold from a low value to a high value. Output type of COUT and DOUT are CMOS. The R5487 Series have DFN1414-6B and DFN1814-6B.
Spec
| Operating Input Voltage | 1.5 V to 5.0 V (Maximum Rating: 12 V) | ||
| Charger Negative Input Voltage | -30 V (Maximum Rating) | ||
| Number of Cells | 1 | ||
| Supply Current | Typ. 3.0 µA | ||
| Standby Current | Max. 0.1 µA (Over-discharge Latch type) Max. 0.5 µA (Over-discharge Auto-release type) |
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| Overcharge Detection Voltage | 4.2 V to 4.6 V (0.005 V Steps) | ||
| Overcharge Detection Voltage Accuracy | ±20 mV | ||
| Overcharge Detection Delay Time | 1.0 s | ||
| Overdischarge Detection Voltage | 2.0 V to 3.0 V (0.001 V Steps) | ||
| Overdischarge Detection Voltage Accuracy | ±35 mV | ||
| Overdischarge Detection Delay Time | 20 ms | ||
| Discharge Overcurrent Detection Voltage | 0.025 V to 0.150 V (0.001 V Steps) | ||
| Discharge Overcurrent Detection Voltage Accuracy | ±10 mV (VDET3 ≥ 0.100 V) ±10% (0.050 V ≤ VDET3 < 0.100 V) ±5 mV (VDET3 < 0.050 V) |
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| Discharge Overcurrent Detection Delay Time | 12 ms | ||
| Charge Overcurrent Detection Voltage | -0.15 V to -0.02 V (0.001 V Steps) | ||
| Charge Overcurrent Detection Voltage Accuracy | ±10% (VDET4 ≤ -0.05 V) ±5 mV (VDET4 > -0.05 V) |
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| Charge Overcurrent Detection Delay Time | 8 ms | ||
| Short Detection Voltage | 0.15 V to 0.40 V (0.005 V Steps) | ||
| Short Detection Voltage Accuracy | 250 µs | ||
| Conditions for Overcharge Restoration | Latch / Voltage Release | ||
| Conditions for Overdischarge Restoration | Latch / Voltage Release | ||
| Package | DFN1814-6B, DFN1414-6B | ||
| 0 V Charge | Available / Unavailable | ||
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 |
|---|---|---|---|---|
| R5487L5xxxx-TR |
|
DFN1414-6B | R5487L5 | R5487L5xx |
| R5487L1xxxx-TR |
|
DFN1814-6B | R5487L1-L4 | R5487L1xx |
- 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