NCP802SN1T1 ,Highly Integrated Lithium Battery Protection Circuit for One Cell Battery PacksNCP802Highly Integrated LithiumBattery Protection Circuitfor One Cell Battery PacksThe NCP802 resid ..
NCP802SN1T1 ,Highly Integrated Lithium Battery Protection Circuit for One Cell Battery PacksBlock DiagramPIN FUNCTION DESCRIPTIONPin # Pin #SOT23−6 SON−6Symbol DescriptionÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ..
NCP802SN1T1 ,Highly Integrated Lithium Battery Protection Circuit for One Cell Battery Packs3NCP802EXCESS DISCONNECTCHARGE CHARGER +CONNECT CONNECT CONNECT CONNECTCURRENT CONNECT LOADCHARGER ..
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NCP802SAN1T1-NCP802SAN1T1G-NCP802SN1T1
Highly Integrated Lithium Battery Protection Circuit for One Cell Battery Packs
NCP802
Highly Integrated Lithium
Battery Protection Circuit
for One Cell Battery Packs
The NCP802 resides in a lithium battery pack where the battery cell
continuously powers it. This circuit senses cell voltage, charge
current, and discharge current, and correspondingly controls the state
of two, N−channel MOSFET switches. These switches reside in series
with the negative terminal of the cell and the negative terminal of the
battery pack. During a fault condition, the NCP802 open circuits the
pack by turning off one of these MOSFET switches, which
disconnects the current path. Internal delay circuitry minimizes
external component count.
Features Highly Accurate Overvoltage Detector
�25 mV at Room Temperature
�30 mV from −5 to 55°C Fault Detection Thresholds
Overvoltage Threshold:
SN1/SAN1 = 4.35 V , SAN5 = 4.275 V, SAN6 = 4.28 V
Undervoltage Threshold:
SN1/SAN1 = 2.4 V , SAN5/6 = 2.3 V
Discharge Current Threshold:
SN1/SAN1/SAN6 = 0.2 V, SAN5 = 0.1 V
Charge Current Threshold: 0.1 V Internal Output Delays
Overvoltage Output Delay:
SN1/SAN1/SAN6 = 250 ms, SAN5 = 1 ms
Undervoltage Output Delay: 20 ms
Discharge Current Output Delay:
SN1/SAN1/SAN6 = 12 ms, SAN5 = 6 ms
Charge Current Output Delay:
SN1/SAN1/SAN6 = 16 ms, SAN5 = 8 ms Absolute Maximum Rating of 28 V for the Charger Input Low Quiescent Current
Normal Operating Current: 3.0 �A
Standby Current when Cells are Discharged: 0.1 �A Zero Volt Charging Available in a Low Profile Surface Mount Package Pb−Free Package is Available*
