R5466 Series

2-Cell Li-ion Battery Protection IC with Alarm Function

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

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

Functional Description

Quality &
Packages

Product Name	Compatibility	Package	Marking	Reliability
R5466Kxxxxx-TR		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.

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