R5492 Series
1-Cell Li-ion Battery Protection IC
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Description
The R5492 is a high voltage tolerance protection IC for overcharge, overdischarge, and overcurrent of a rechargeable one-cell Lithium-ion (Li+) / Lithium-polymer battery. The R5492 supports the voltage release type at overcharging / overdischarging.
Each output delay time of overcharge, overdischarge, and overcurrent is fixed internally. But, the delay shortening is able to shorten the detection and the release delay times at overcharging / overdischarging. Especially, the overcharge detection delay time can be shorten to aprrox.1/90.
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Spec
Operating Input Voltage 1.5 V to 5.0 V (Maximum Rating: 30 V) Number of Cells 1 Supply Current Typ. 4.0 µA Standby Current Max. 0.5 µA Overcharge Detection Voltage 4.00 V to 4.50 V (0.005 V steps) Overcharge Detection Voltage Accuracy ±20 mV (Ta = 25°C)
±25 mV (-5°C < Ta < 55°C)Overcharge Detection Delay Time 1 s Overdischarge Detection Voltage 2.00 V to 3.00 V (0.1 V steps) Overdischarge Detection Voltage Accuracy ±2.5% Overdischarge Detection Delay Time 20 ms Discharge Overcurrent Detection Voltage 0.05 V to 0.20 V (0.005 V steps) Discharge Overcurrent Detection Voltage Accuracy ±15 mV Discharge Overcurrent Detection Delay Time 12 ms Charge Overcurrent Detection Voltage -0.20 V to -0.05 V (0.005 V steps) Charge Overcurrent Detection Voltage Accuracy ±15 mV Charge Overcurrent Detection Delay Time 8 ms Short Detection Voltage 0.8 V Short Detection Delay Time 300 µs Conditions for Overcharge Restoration Voltage Release Conditions for Overdischarge Restoration Voltage Release Package SOT-23-6 0 V Charge Permission Protections / Functions
Temperature Protection Reset Alarm Cell Balance Cascadable Open Wire Detection Wakeup Short-circuit Current Detection Delay Time Shortening 
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Technical
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Typical Application
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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.
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Sample / Buy
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Buy Online
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Buy, Request for Samples, Request for Information Materials
Authorized Distributors
Please contact your local distributors for any sales-related inquiry such as price, stock, delivery, etc.
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Download Datasheet
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".