The MAX5026 constant-frequency, pulse-width modulating (PWM), low-noise boost converter is intended for low-voltage systems that often need a locally generated high voltage. This device is capable of generating low-noise, high output voltages required for varactor diode biasing in TV tuners, set-top boxes, and PCI cable modems. The MAX5026 operates from as low as 3V and switches at 500kHz.
The constant-frequency, current-mode PWM architecture provides for low output noise that is easy to filter. A 40V lateral DMOS device is used as the internal power switch, making the devices ideal for boost converters up to 36V. The MAX5026 adjustable version requires the use of external feedback resistors to set the output voltage.
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