R5435 Series
2-Cell to 3-Cell Li-ion Battery Second Protection IC
Description
R5435 Series are CMOS-based high voltage tolerant over-charge protection ICs for Li-ion/Li-polymer secondary battery. The R5435 can detect overcharge of 2-cell to 3-cell Li-ion/ Li-polymer batteries. The R5435 is consists of 3 voltage detectors, a voltage reference unit, an oscillator, a counter, a delay circuit, a logic circuit. When the over-charge is detected, after the IC internally fixed delay time, the output of COUT becomes "H". After detecting over-charge, when the cell voltage becomes lower than the over-charge released voltage, the over-charge state is released. If all the cells voltages become equal or less than the shutdown detector threshold, all the circuits are halted and shut down, as a result, the consumption current of IC itself (Shutdown current) is extremely reduced. By connect short 2 cells other than monitored cell, over-charge and released delay time can be shortened. The output type is CMOS.
Spec
| Operating Input Voltage | 3.3 V to 15.0 V (Maximum Rating: 30 V) | ||
| Number of Cells | 2,3 | ||
| Supply Current | Typ. 3.0 µA | ||
| Shutdown Detection Voltage | 3.5 V | ||
| Shutdown Current | 0.1 µA | ||
| Overcharge Detection Voltage | 4.10 V to 4.55 V (0.005 V Steps) | ||
| Overcharge Detection Voltage Accuracy | ±20 mV | ||
| Overcharge Detection Delay Time | 2 s, 4 s, 6 s | ||
| Package | DFN(PL)1616-6B, TSOT-23-6 | ||
Protections / Functions
| Temperature Protection | Reset | Alarm | Cell Balance | Cascadable | Open Wire Detection | Wakeup | Short-circuit Current Detection | Delay Time Shortening |
|---|---|---|---|---|---|---|---|---|
 |
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 |
|---|---|---|---|---|
| R5435KxxxxA-TR |
|
DFN(PL)1616-6B | See datasheet | R5435K |
| R5435NxxxxA-TR-FE |
|
TSOT-23-6 | See datasheet | R5435N-FE |
- 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
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