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MAX8805Z - PWM Step-Down Converters

Download the MAX8805Z datasheet PDF. This datasheet also covers the MAX8805Y variant, as both devices belong to the same pwm step-down converters family and are provided as variant models within a single manufacturer datasheet.

General Description

The MAX8805Y/MAX8805Z high-frequency step-down converters are optimized for dynamically powering the power amplifier (PA) in WCDMA or NCDMA handsets.

Key Features

  • PA Step-Down Converter 7.5µs (typ) Settling Time for 0.8V to 3.4V Output Voltage Change Dynamic Output Voltage Setting from 0.4V to VBATT 60mΩ pFET and 100% Duty Cycle for Low Dropout 2MHz or 4MHz Switching Frequency Low Output-Voltage Ripple 600mA Output Drive Capability 2% Maximum Accuracy Tiny External Components.
  • Dual Low-Noise LDOs Low 35µVRMS (typ) Output Noise High 70dB (typ) PSRR Guaranteed 200mA Output Drive Capability Individual ON/OFF Control.
  • Low 0.1µA Shu.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (MAX8805Y_MaximIntegratedProducts.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
MAX8805W 600mA/650mA PWM Step-Down Converters
MAX8805X 600mA/650mA PWM Step-Down Converters
MAX8805Y 600mA/650mA PWM Step-Down Converters
MAX8804W USB/AC Adapter Chargers
MAX8804Y USB/AC Adapter Chargers

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.

View original datasheet text
19-0777; Rev 0; 4/07 600mA PWM Step-Down Converters in 2mm x 2mm WLP for WCDMA PA Power General Description The MAX8805Y/MAX8805Z high-frequency step-down converters are optimized for dynamically powering the power amplifier (PA) in WCDMA or NCDMA handsets. The devices integrate a high-efficiency PWM step-down converter for medium- and low-power transmission, and a 60mΩ typical bypass FET to power the PA directly from the battery during high-power transmission. Dual 200mA low-noise, high-PSRR low-dropout regulators (LDOs) for PA biasing are also integrated. Two switching frequency options are available—2MHz (MAX8805Y) and 4MHz (MAX8805Z)—allowing optimization for smallest solution size or highest efficiency. Fast switching allows the use of small ceramic 2.