R5462 Series

High Accuracy 2-Cell Li-ion Battery Protection IC

Description

The R5462 Series are high voltage CMOS-based protection ICs for over-charge/discharge of rechargeable two-cell Li-ion/Lithium polymer, further include a short protection for preventing large external short circuit current and the protection circuits against the excess discharge-current and excess charge current. Each of these ICs is composed of six detectors, a temperature detector, reference units, a delay circuit, a short circuit protector, an oscillator, a counter, and logic circuits. The Over-charge detector threshold is high accuracy such as ±10mV. DFN(PL)1820-6B package is available.

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. 4.0 µA
Standby Current	Max. 0.1 µA or Max. 2.0 µA
Overcharge Detection Voltage	3.65 V to 4.32 V
Overcharge Detection Voltage Accuracy	±10 mV
Overcharge Detection Delay Time	1 s
Overdischarge Detection Voltage	2.0 V to 3.2 V
Overdischarge Detection Voltage Accuracy	±1.0%
Overdischarge Detection Delay Time	128 ms
Discharge Overcurrent Detection Voltage	0.05 V to 0.20 V
Discharge Overcurrent Detection Voltage Accuracy	±10 mV
Discharge Overcurrent Detection Delay Time	12 ms
Charge Overcurrent Detection Voltage	-0.2 V to -0.1 V
Charge Overcurrent Detection Voltage Accuracy	±20 mV
Charge Overcurrent Detection Delay Time	8 ms
Short Detection Voltage	Typ. 1.0 V
Short Detection Delay Time	300 µs
Conditions for Overcharge Restoration	Voltage Release
Conditions for Overdischarge Restoration	Latch / Voltage Release
Package	DFN(PL)1820-6B
0 V Charge	Available / Unavailable

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
R5462K2xxAG-TR		DFN(PL)1820-6B	R5462K	R5462K

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