R5436 Series
3-Cell to 5-Cell Li-ion Battery Protection IC with Thermal Protection
R5436 Series
3-Cell to 5-Cell Li-ion Battery Protection IC with Thermal Protection
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Description
The R5436 is an overcharge, overdischarge and overcurrent protection IC for Li-ion or Li-polymer secondary battery. Overcharge, Overdischarge, Charge Overcurrent and Discharge Overcurrent for 3 to 5 serial cells can be detected. By cascade connection using the R5436, it is also possible to protect 6-serial or more cells rechargeable battery pack. The R5436 provides a cell-balancing function to equalize imbalance between cells, and it provides an open-wire detection to detect a broken wire between a battery and the circuit board. The open-wire detection is optionally selectable.
Spec
| Operating Input Voltage | 2.5 V to 25 V (Maximum Rating: 30 V) | ||
| Charger Negative Input Voltage | 30 V (Maximum Rating) | ||
| Number of Cells | 3,4,5 | ||
| Supply Current | Typ. 12.0 µA | ||
| Standby Current | Typ. 6.0 µA | ||
| Overcharge Detection Voltage | 3.6 V to 4.5 V (0.005 V Steps) | ||
| Overcharge Detection Voltage Accuracy | ±25 mV | ||
| Overcharge Detection Delay Time | 1.0 s | ||
| Overcharge Restoration Voltage | VDET1 -0.1 V to VDET1 -0.4 V (0.01 V Steps) | ||
| Overdischarge Detection Voltage | 2.0 V to 3.2 V (0.005 V Steps) | ||
| Overdischarge Detection Voltage Accuracy | ±2.5% | ||
| Overdischarge Detection Delay Time | Adjustable with an external capacitor | ||
| Discharge Overcurrent Detection Voltage | VDET31: 0.05 V to 0.25 V (0.01 V Steps) VDET32: VDET31 x 3 |
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| Discharge Overcurrent Detection Voltage Accuracy | VDET31: ±15 mV (VDET31 ≤ 0.15V) / ±20 mV (VDET31 > 0.15V) VDET32: ±25 mV (VDET31 ≤ 0.10V) / ±50 mV (VDET31 > 0.10V) |
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| Discharge Overcurrent Detection Delay Time | Adjustable with an external capacitor | ||
| Charge Overcurrent Detection Voltage | -0.2 V, -0.1 V, -0.05 V | ||
| Charge Overcurrent Detection Voltage Accuracy | ±15 mV (VDET4= -0.05V / -0.1V) / ±30 mV (VDET4 = -0.2V) | ||
| Charge Overcurrent Detection Delay Time | 8 ms | ||
| Short Detection Voltage | 0.25 V to 1.0 V (0.02 V Steps) | ||
| Short Detection Delay Time | 300 µs | ||
| Conditions for Overcharge Restoration | Voltage Release | ||
| Conditions for Overdischarge Restoration | Latch / Voltage Release | ||
| Package | TSSOP-28 | ||
| Cell Balancing Detection Voltage (VCBD) | 3.45 V to 4.45 V (0.005 V Steps) | ||
| Cell Balancing Release Voltage | VCBD to VCBD -0.4 V (0.01 V Steps) | ||
| 0 V Charge | Available | ||
- 1 VDET31: Set to meet the following equation: (3×VDET31+0.05<0.8×VSHORT). 2 VDET32 is not detected when VDET32 is higher than VSHORT.
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 |
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| 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: 5-cell Protection Battery Charger with Cell-balancing Enabled
Quality & Packages
- 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
R5436 Series