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MAX5026 - 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.

Key Features

  • Input Voltage Range: 3V to 11V (MAX5026/MAX5028) 4.5V to 11V (MAX5025/MAX5027).
  • Wide Output Voltage Range: VCC to 36V.
  • Output Power: 120mW (max).
  • User-Adjustable Output Voltage with MAX5025/MAX5026 Using External Feedback Resistors.
  • Fixed 30V Output Voltage: MAX5027/MAX5028.
  • Internal 1.3Ω (typ), 40V Switch.
  • Constant PWM Frequency Provides Easy Filtering in Low-Noise.

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Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
MAX502 Voltage-Output / 12-Bit Multiplying DACs
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MAX5023 High-Voltage Linear Regulators

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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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.