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產品資訊

產品資訊 > RICOH > Li-ion Battery Protection ICs > 1-Cell
1cell Li-ion/polymer Battery Protection IC Products Lineup

Ricoh's 1cell Li-ion/polymer battery protection ICs are high precision devices. Not only the over-charge detector threshold, for example, the R5486K Series have an ultra high accuracy excess discharge current detector of ±8% accuracy. (If VD3 is less than 38mV, ±3.1mV accuracy is guaranteed.) Due to using external sensing resistance solution, R5472x/R5480K/R5486K Series can detect more precise excess charge/discharge current than conventional solution of using FET's on resistance. FET's on resistance is unstable depending on the condition such as gate voltage, temperature, and FET part number. Besides, the R5471L Series have high precision over-charge voltage detector with ±10mV accuracy in the temperature range from 0°C to 50°C.

Product
Name
Overcharge
Detector
Threshold [V]
(Accuracy)
Overdischarge
Detector
Threshold [V]
(Accuracy)
Excess Discharge Current
Detector Threshold [V]
(Accuracy)
Excess Charge
Current Detector
Threshold [V]
(Accuracy)
Over-current Detector Type Supply Current
[µA]
Package Download
R5405 4.0 to 4.5
(±25mV) 
2.0 to 3.0
(±2.5%) 
0.05 to 0.20
(±15mV) 
-0.2 to -0.05
(±30mV) 
FET 4.0 SOT-23-6
DFN(PLP)1616-6
DFN1814-6
Flyer
R5471 4.1 to 4.5
(±10mV)
2.0 to 3.0
(±2.5%)
0.05 to 0.13
(±10mV)
-0.17 to -0.05
(±20mV)
FET 4.0 DFN1814-6 -
R5478 4.2 to 4.5,
3.65 or 3.9
(±25mV)
1.9 to 3.0
(±2.5%)
0.05 to 0.20
(±15mV)
- FET 3.0 SOT-23-5
SOT-23-6
Datasheet
R5487
R5497
4.2 to 4.6
(±20mV)
2.0 to 3.0
(±35mV)
0.025 to 0.15
(±5mV or ±10mV)
-0.15 to -0.02
(±10% or ±5mV)
FET 3.0 DFN1814-6
DFN1414-6
Datasheet
NEW
R5492
4.0 to 4.5
(±20mV)
2.0 to 3.0
(±2.5%)
0.05 to 0.20
(±15mV)
-0.20 to -0.05
(±15mV)
FET 4.0 SOT-23-6 Datasheet
R5499 4.3 to 4.6
(±12mV)
2.0 to 3.0
(±2.5%)
0.03 to 0.085
(±5mV)
-0.15 to  -0.05
(±15mV)
FET 4.0 WLCSP-6-P4 Datasheet
R5480 4.1 to 4.5
(±20mV)
2.1 to 3.0
(±35mV)
0.030 to 0.048
(±15%)
-0.030 to -0.020
(±15%)
R 4.0 DFN(PLP)1414-6
DFN1814-6
Datasheet
R5486 4.1 to 4.5
(±20mV)
2.1 to 3.0
(±35mV)
0.015 to 0.046
(±8% or ±3.1mV)
0.03 to 0.08
(±8% or ±3.1mV)
-0.060 to -0.015
(±15% or ±3mV)
R 4.0 DFN(PLP)1414-6 Datasheet
R5494  4.1 to 4.5
(±20mV)
2.1 to 3.0
(±35mV)
0.021 to 0.048
(±10% or ±4mV)
-0.030 to -0.020
(±15%)
R 3.0 DFN1814-6 -
  • *1Topt=0°C to 50°C, Considering of variation in parameters.
    We compensate for these characteristics related to temperature by laser-trimming, however, this specifications is guaranteed by design.

TYPICAL APPLICATION

TYPICAL APPLICATION

RSENS:Over-current detector input pin
Due to using external resistance R3, R5472K/R5480K/R5486K Series can detect more precise excess charge/discharge current than conventional solution of using FET's on resistance. FET's on resistance is unstable depending on the condition such as gate voltage, temperature, and FET part number. (Excess current threshold of R5486K is ±8% accuracy. If VD3 is less than 38mV, ±3.1mV accuracy is guaranteed.)

  • *)Products built-in the RSENS pin: R5472K, R5480K, R5486K