LINEAR TECHNOLOGY DC2044A 演示板, LTC4020, 电池充电器
The is a Demonstration Circuit for LTC4020 battery charger. The demonstration circuit 2044A is a 55V buck-boost multi-chemistry battery charger featuring the LTC4020. The board will accept an input voltage between 15V and 55V. The float voltage of the battery output BAT is 25.2V, with 3.3A maximum charge current. The converter output VOUT has a voltage range of 21 to 28V, with 3A maximum load current. The LTC4020 contains a high efficiency synchronous buck-boost DC/DC controller and uses a proprietary average current mode architecture. The LTC4020 battery charger can provide a constant current/constant-voltage charge algorithm CC/CV, with MODE pin grounded, constant-current charging CC, with MODE pin floated or charging with an optimized 4-step, 3-stage lead-acid battery charge profile connect MODE pin to INTVCC, with a 0R jumper at the optional R29 position.