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R5492 Series

1-Cell Li-ion Battery Protection IC

  • RoHS

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.

Specs & Datasheets

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 Available / Unavailable

Download Datasheet

Protections / Functions

Functional Description

Temperature Protection Reset Alarm Cell Balance Cascadable Open Wire Detection Wakeup Short-circuit Current Detection Delay Time Shortening

Technical Documents

Typical Application

Typical Application

Quality & Packages

Product Name Compatibility Package Marking Reliability
  • gradeConsumerC
SOT-23-6 R5492N R5492N-FF

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Please contact us or our distributors for unpublished reliability information.

Sample / Buy

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".

Search for similar products under conditions below.

Category:Lithium-ion Battery Protection ICs

Features Battery Protection
Cell 1
Functions Short-circuit Current Detection,Delay Time Shortening