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19-0603; Rev 0; 7/06
40V, 600mA Buck Converters with LowQuiescent-Current Linear
Regulator Mode
General Description
The MAX5096/MAX5097 easy-to-use, Dual Mode™, DC-DC converters operate as LDO (low dropout) or switch-mode buck converters.
At a high output load, the converters operate as high-efficiency pulse-widthmodulated (PWM) switch-mode converters and reduce the power dissipation.
The devices switch to a low-quiescent-current (IQ) LDO mode of operation at light load.
During the key-off condition, the system’s microcontroller drives the LDO/BUCK input on the fly and forces the MAX5096/MAX5097 into LDO Mode, thereby reducing the quiescent current significantly.
In Buc...