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MAX5027 - PWM Step-Up DC-DC Converters

Description

The MAX5025

MAX5028 constant-frequency, pulsewidth modulating (PWM), low-noise boost converters are intended for low-voltage systems that often need a locally generated high voltage.

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Full PDF Text Transcription

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MAX5025–MAX5028 19-2239; Rev 2; 3/09 EVAALVUAAILTAIOBNLEKIT 500kHz, 36V Output, SOT23, PWM Step-Up DC-DC Converters General Description The MAX5025–MAX5028 constant-frequency, pulsewidth modulating (PWM), low-noise boost converters are intended for low-voltage systems that often need a locally generated high voltage. These devices are capable of generating low-noise, high output voltages required for varactor diode biasing in TV tuners, set-top boxes, and PCI cable modems. The MAX5025– MAX5028 operate from as low as 3V and switch 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.
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