NB7200 Series

2-cell Li-ion Battery Protection IC with High-accuracy Overcurrent Detection

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Functions & Benefits

Description

The NB7200 is a two-cell Li- ion / polymer battery protection IC providing overcharge, overdischarge and charge / discharge overcurrent detections. Major features of this device include charge / discharge overcurrent detectors with high-accuracy of ±1.0 mV.

Lower-resistance of sense resistor by overcurrent detector achieves heat reduction on the board, and low consumption current and low standby current achieve longer driving time with batteries of small capacity.

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. 2.0 µA
Standby Current	Max. 0.2 µA
Overcharge Detection Voltage	4.2 V to 4.8 V
Overcharge Detection Voltage Accuracy	±15 mV
Overcharge Detection Delay Time	1024 ms
Overdischarge Detection Voltage	2.0 V to 3.2 V
Overdischarge Detection Voltage Accuracy	±35 mV
Overdischarge Detection Delay Time	32 ms, 64 ms, 128 ms, 256 ms, 512 ms
Discharge Overcurrent Detection Voltage	VDET3-1: 0.0030 V to 0.0300 V VDET3-2: 0.010 V to 0.090 V
Discharge Overcurrent Detection Voltage Accuracy	VDET3-1: ±1.0 mV VDET3-2: ±2 mV (0.010 V to 0.040 V), ±5% (0.040 V to 0.050 V), ±2.5 mV (0.050 V to 0.090 V)
Discharge Overcurrent Detection Delay Time	VDET3-1: 12 ms, 128 ms, 256 ms, 512 ms, 3584 ms VDET3-2: 16 ms
Charge Overcurrent Detection Voltage	-0.0300 V to -0.0030 V
Charge Overcurrent Detection Voltage Accuracy	±1.0 mV
Charge Overcurrent Detection Delay Time	8 ms, 16 ms, 32 ms
Short Detection Voltage	0.020 V to 0.100 V
Short Detection Voltage Accuracy	±4 mV
Short Detection Delay Time	0.27 ms, 0.53 ms
Conditions for Overcharge Restoration	Auto Release
Conditions for Overdischarge Restoration	Auto Release
Package	DFN1616-8-GM
0 V Battery Charging	Permission / Inhibition

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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
NB7200GMxxxxxE4S		DFN1616-8-GM	See datasheet	NB7200GMS

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

	Features	Battery Protection
	Cell	2
	Functions	Short-circuit Current Detection