Switch_driver_with_micropower_standby_mode_18_V_to_28_V

Published:2009/7/24 20:56:00 Author:Jessie | From:SeekIC

Figure 8-54 shows an LTC1155 connected for switchldriver operation with micropower standby. This circuit is similar to that shown in Fig. 8-53, but with R1 increased from 3 kΩ to 330 kΩ, and a boot-strap R2/D2 network added. These modifications reduce the Fig. 8-54 standby current to less than 30 μA. The extra supply current is provided only when the switch is turned on. The supply current drops back to 30 μA when the switch is turned off, and the LTC1155 is returned to standby. LINEAR TECHNOLOGY, APPLICATION NOTE 53, P. 4,



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