R5466 Series
2-Cell Li-ion Battery Protection IC with Alarm Function
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Description
The R5466 is high voltage CMOS-based ultra high precision protection ICs for overcharge/discharge voltage and current of rechargeable two-cell Lithium-ion (Li+) / Lithium polymer with alarm signal output. The R5466 has an alarm signal output, a temperature detection, an over-charge voltage detection, an over-discharge voltage/ discharge overcurrent detection and a charge overcurrent detection. When the over-charge alarm is detected, after the internal fixed delay time, the output of AOUT becomes "H" from high impedance at normal state. Further, with an external thermistor, if the temperature is 45°C or more, the over-charge alarm detector threshold shifts from normal temperature alarm detector threshold to the high temperature alarm detector threshold.
Spec
| Operating Input Voltage | 1.5 V to 10.0 V (Maximum Rating: 12 V) | ||
| Charger Negative Input Voltage | -30 V | ||
| Number of Cells | 2 | ||
| Supply Current | Typ. 5.0 µA | ||
| Standby Current | Max. 0.1 µA | ||
| Overcharge Detection Voltage | 3.6 V to 4.3 V | ||
| Overcharge Detection Voltage Accuracy | +20 mV/-25 mV | ||
| Overcharge Detection Delay Time | 1 s | ||
| Overdischarge Detection Voltage | 2.0 V to 3.0 V | ||
| Overdischarge Detection Voltage Accuracy | ±2.5% | ||
| Overdischarge Detection Delay Time | 128 ms | ||
| Discharge Overcurrent Detection Voltage | 0.05 V to 0.24 V | ||
| Discharge Overcurrent Detection Voltage Accuracy | ±15 mV | ||
| Discharge Overcurrent Detection Delay Time | 16 ms | ||
| Charge Overcurrent Detection Voltage | -0.22 V to -0.1 V | ||
| Charge Overcurrent Detection Voltage Accuracy | ±20 mV | ||
| Charge Overcurrent Detection Delay Time | 8 ms | ||
| Short Detection Voltage | 1.0 V | ||
| Short Detection Delay Time | 300 µs | ||
| Conditions for Overcharge Restoration | Voltage Release | ||
| Conditions for Overdischarge Restoration | Latch | ||
| Package | DFN(PL)2527-10 | ||
| 0 V Charge | Available | ||
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 |
|---|---|---|---|---|
| R5466Kxxxxx-TR |
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DFN(PL)2527-10 | R5466K | R5466K |
- 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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