DC765A - LT3479EDE | 1MHz, Positive/Negative Converter, Boost: Vin=2.5V-4.2V, Vout=7V@600mA, Inverter: Vin=2.5V-12V, Vout=-5V@600mA
Demonstration circuit 765 is a general purpose assembly containing 1MHz, positive and negative converters featuring the LT3479. The demo circuit demonstrates small size and low component count in a Boost Circuit and an Inverting Circuit. The Boost Converter is set up to convert a 2.5V-4.2V input to 7V output at 300mA constant current to drive two LXHLPW09 LUMILEDs but can be easily configured to run as a general purpose boost providing 7V at 600mA (See instructions on the schematic). The Inverting Circuit generates a -5V output at 600mA from an input of 2.5V to 12V. The boost circuit was designed to demonstrate the ability to drive high power LEDs with a constant current and a minimum sense resistor power loss. Both circuits demonstrate the capacitor programmable Soft-Start feature, advantages of the 1MHz constant switching frequency and the internal 42V switches.
