Composed of MAX1802 multiple output digital camera power supply circuit diagram is shown as below. MAX1802 Chip has 2 buck converters and 3 boost converters. Input voltage 2.5?11V, continuously adjustable output voltage 2.7?5.5V. The lowest output voltage can be ajdusted to 1.25V. The working rate of MAX1802 can be adjusted to 1MHz and conversion efficienc..