LT3650EDD-8.4#PBF

LINEAR TECHNOLOGY  LT3650EDD-8.4#PBF  芯片, 电池充电器, 2A, 锂离子, 12DFN

The is a High Voltage 2A Monolithic 2-cell Li-ion Battery Charger operates over a 9 to 32V input voltage range 11.5V minimum start-up voltage. The LT3650 provides a constant-current/constant-voltage charge characteristic with maximum charge current externally programmable up to 2A, set using an external current sense resistor. A precondition feature trickle-charges a low voltage battery and bad-battery detection provides a signal and suspends charging if a battery does not respond to preconditioning. It can be configured to terminate charging when charge current falls to C/10 or one-tenth the programmed maximum current. Once charging is terminated, the LT3650 enters a low current 85µA standby mode. An auto-restart feature starts a new charging cycle if the battery voltage drops 2.5% from the float voltage or if a new battery is inserted into a charging system. The LT3650 contains an user-programmable internal safety timer.

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Wide input voltage range 9 to 32V, 40V absolute maximum

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Up to 2A programmable charge current

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User-selectable termination C/10 or onboard termination timer

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Dynamic charge rate programming/soft-start pin

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Programmable input current limit

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1MHz Fixed frequency

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Average current mode control

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0.5% Float voltage accuracy

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5% Charge current accuracy

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2.5% C/10 detection accuracy

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NTC resistor temperature monitor

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Auto-recharge at 97.5% float voltage

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Auto-precondition at <70% float voltage

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Bad battery detection with auto-reset

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Binary coded open-collector status pins