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MAX8506 - PWM Step-Down DC-DC Converters

Description

The MAX8506/MAX8507/MAX8508 integrate a PWM stepdown DC-DC regulator and a 75mΩ (typ) bypass FET to power the PA in WCDMA and cdmaOne™ cell phones.

The supply voltage range is from 2.6V to 5.5V, and the guaranteed output current is 600mA.

Features

  • Integrated 75mΩ (typ) Bypass FET.
  • 38mV Dropout at 600mA Load.
  • Up to 94% Efficiency.
  • Dynamically Adjustable Output from 0.4V to 3.4V (MAX8506, MAX8507).
  • Externally Fixed Output from 0.75V to 3.4V (MAX8508).
  • 1MHz Fixed-Frequency PWM Switching.
  • 600mA Guaranteed Output Current.
  • Shutdown Mode 0.1µA (typ).
  • 16-Pin Thin QFN (4mm x 4mm, 0.8mm max Height) PART MAX8506ETE MAX8507ETE MAX8508ETE Ordering Information TEMP RAN.

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Part Number Description
MAX8505 Step-Down Regulator
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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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19-2918; Rev 1; 1/04 MAX8506/MAX8507/MAX8508 PWM Step-Down DC-DC Converters with 75mΩ Bypass FET for WCDMA and cdmaOne Handsets General Description The MAX8506/MAX8507/MAX8508 integrate a PWM stepdown DC-DC regulator and a 75mΩ (typ) bypass FET to power the PA in WCDMA and cdmaOne™ cell phones. The supply voltage range is from 2.6V to 5.5V, and the guaranteed output current is 600mA. One megahertz PWM switching allows for small external components. The MAX8506 and MAX8507 are dynamically controlled to provide varying output voltages from 0.4V to 3.4V. The MAX8508 is externally programmed for fixed 0.75V to 3.4V output. Digital logic enables a high-power (HP) bypass mode that connects the output directly to the battery for all versions.
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