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R5435 Series
2-Cell to 3-Cell Li-ion Battery Second Protection IC
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.
Specs & Datasheets
| 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(PLP)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 |
|---|---|---|---|---|---|---|---|---|
 |
Technical Documents
Typical Application
Quality & Packages
| Product Name | Compatibility | Package | Marking | Reliability |
|---|---|---|---|---|
| R5435KxxxxA-TR |
|
DFN(PLP)1616-6B | R5435K | R5435K |
| R5435NxxxxA-TR-FE |
|
TSOT-23-6 | R5435N | R5435N-FE |
C
Refer to the datasheets for the details on the product.
The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
Please contact us or our distributors for unpublished reliability information.
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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 "Externally Configurable Protections and Their Advantages".