NB7142 Series

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

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Description

The NB7142 is a one-cell Li- ion / polymer battery protection IC providing overcharge, overdischarge and charge / discharge overcurrent detections and it provides a wide range in the overcurrent detection.

The low standby current can achieve longer driving time with a battery of small capacity. In the current detection FET sense type of the NB7142, it improves safety with its high accuracy of over current and short circuit detection.

Spec

Operating Input Voltage	1.5 V to 5.0 V (Maximum Rating: 12 V)
Number of Cells	1
Supply Current	Typ. 1.5 µA
Standby Current	Max. 0.04 µA (VDET2: Latch type) Max. 0.50 µA (VDET2: Auto release type)
Overcharge Detection Voltage	4.2 V to 4.8 V (5 mV Step)
Overcharge Detection Voltage Accuracy	±20 mV
Overcharge Detection Delay Time	1024 ms
Overdischarge Detection Voltage	2.0 V to 3.0 V (50 mV Step)
Overdischarge Detection Voltage Accuracy	±50 mV
Overdischarge Detection Delay Time	64 ms, 128 ms
Discharge Overcurrent Detection Voltage	0.0150 V to 0.1500 V (0.5 mV Step)
Discharge Overcurrent Detection Voltage Accuracy	±3 mV (0.015 V to 0.060 V) ±5% (0.060 V to 0.100 V) ±5 mV (0.100 V to 0.150 V)
Discharge Overcurrent Detection Delay Time	12 ms, 128 ms
Charge Overcurrent Detection Voltage	-0.150 V to -0.020 V (0.5 mV Step)
Charge Overcurrent Detection Voltage Accuracy	±3 mV (-0.060 V to -0.020 V) ±5% (-0.100 V to -0.060 V) ±5 mV (-0.150 V to -0.100 V)
Charge Overcurrent Detection Delay Time	8 ms, 17 ms
Short Detection Voltage	0.060 V to 0.400 V (5 mV Step)
Short Detection Voltage Accuracy	±5%
Short Detection Delay Time	0.3 ms
Conditions for Overcharge Restoration	Auto Release / Latch
Conditions for Overdischarge Restoration	Auto Release / Latch
Package	DFN1212-6-GK
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
NB7142GKxxxxxE4S		DFN1212-6-GK	See datasheet	NB7142GKS

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	1
	Functions	Short-circuit Current Detection