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DC/DC converters with integrated FET

Continuing the integration trend, Maxim's latest single-channel, step-up DC/DC converters boasts a built-in n-channel power mosfet that, combined with pulse width modulation (pwm) techniques, ensures high efficiency and a fast transient response.

Built in BiCMOS, the MAX17062 and MAX17067 devices specifically target lcd applications, which require high current density, high voltage capacity and good efficiency. The current-mode architecture employed by these devices provides fast transient response to dynamic loads, whilst the high-voltage internal MOSFET generates output voltages up to 20V from an input of 2.6V to 5.5V.

Another feature of the MAX17067 is an input-clamping circuit to help protect the device's internal control circuitry from the input-voltage transients that can be found in many LCD production facilities. With an external resistor, the MAX17067's internal clamping circuit reduces current to the input during a high-input-voltage transient condition, avoiding the cost of external clamping circuitry, or the use of products with input-voltage ratings higher than required for normal operation.

The MAX17062 is available in a low-profile 10-pin TDFN package, whilst the MAX17067 comes in an 8-pin microMAX package, and both are specified over the -40 degrees Celsius to +85 degrees Celsius temperature range. An evaluation kit is available with recommended external components to reduce design time. For more information, go to

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