R5471 Series

High Accuracy 1-Cell Li-ion Battery Protection IC

Description

The R5471 is high voltage CMOS-based protection ICs for over-charge/discharge of rechargeable one-cell Lithium-ion/Lithium polymer excess load current, further include a short circuit protector for preventing large external short circuit current and excess charge/discharge-current.

Each of these ICs is composed of four voltage detectors, reference units, a delay circuit, a short circuit protector, an oscillator, a counter, and logic circuits.

Spec

Operating Input Voltage	1.5 V to 5.0 V (Maximum Rating: 12 V)
Charger Negative Input Voltage	-30 V
Number of Cells	1
Supply Current	Typ. 4.0 µA
Standby Current	Typ. 0.1 µA
Overcharge Detection Voltage	4.1 V to 4.5 V
Overcharge Detection Voltage Accuracy	±10 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	20 ms
Discharge Overcurrent Detection Voltage	0.05 V to 0.13 V
Discharge Overcurrent Detection Voltage Accuracy	±10 mV
Discharge Overcurrent Detection Delay Time	36 ms
Charge Overcurrent Detection Voltage	-0.17 V to -0.05 V
Charge Overcurrent Detection Voltage Accuracy	±20 mV
Charge Overcurrent Detection Delay Time	16 ms
Short Detection Voltage	0.35 V
Short Detection Delay Time	600 µs
Conditions for Overcharge Restoration	Latch
Conditions for Overdischarge Restoration	Latch
Package	DFN1814-6
0 V Charge	Optional

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
R5471Lxxxxx-TR		DFN1814-6	R5471L	R5471L

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