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R5461K Series

Li-ion/Polymer 2Cell Protector with Alarm function

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The R5461K Series are high voltage CMOS-based protection ICs for over-charge/discharge of rechargeable two-cell Li-ion/Lithium polymer, further include an alarm function and 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 detectors, a temperature detector, reference units, a delay circuit, a short circuit protector, an oscillator, a counter, and logic circuits. The signal is outputted before detecting over-charge due to having an alarm function.

They are settable for normal, high and low temperature. So they can make it safer to charge a battery. The Over-charge detector threshold and the alarm detector threshold are high accuracy such as +10mV/-15mV. DFN(PLP)2527-10 package is available.

Manufactured with High Voltage Tolerant Absolute Maximum Rating Process	Supply Voltage (VDD)	12V (Absolute Maximum Rating)
	Charge Negative Input voltage (V-)	-30V (Absolute Maximum Rating)
Low supply current	Supply Current (IDD)	Typ.4.0µA (G Version) Typ.5.0µA (C Version)
Low supply current	Standby Current (Is)	Typ.0.1µA
High accuracy detector threshold	Alarm	+10mV/-15mV (0∼60°C)
	Over-charge	+10mV/-15mV (0∼50°C)
	Over-discharge	±2.5%
	Excess Discharge-current	±15mV
	Excess Charge-current	±30mV
Variety of detector threshold	Alarm	3.2V to 4.5V (0∼45°C) 3.1V to 4.4V (45∼60°C)
	Over-charge	3.6V to 4.3V (0∼50°C)
	Over-discharge	2.0V to 3.0V
	Excess Discharge-current	0.05V to 0.24V
	Excess Charge-current	-0.22V to -0.1V
Internal fixed Output delay time	Alarm	Typ.6ms
	Over-charge	Typ.1.0s
	Over-discharge	Typ.128ms
	Excess Discharge-current	Typ.12ms
	Excess Charge-current	Typ.8ms
	Short Protection	Typ.300µs
Alarm threshold can be changed by the temperature	Alarm temperature	45°C
Output Delay Time Shortening Function	At COUT is "H", if V- is set at -1.6V, the Output Delay time of detector and release for the over-charge and over-discharge can be reduced.
0V-charge	Selectable
Package	DFN(PLP)2527-10

•Li-ion/Li-ion polymer protector of over-charge, over-discharge, excess discharge-current, excess charge-current for battery pack.
•High precision protectors for DSLR and any other gadgets using on board Li-ion /Li polymer battery.