LT3650EDD-8.4#PBF
数据手册.pdfLINEAR 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