LT3650IDD-8.4#PBF

LINEAR TECHNOLOGY  LT3650IDD-8.4#PBF  芯片, 电池充电器, 2A, 锂离子, 12DFN

The is a complete monolithic 2-cell Li-ion/polymer Battery Charger 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. The LT3650 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 user-programmable internal safety 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