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MAX8862L, MAX8862R, MAX8862T

Low-Cost, Low-Dropout, Dual Linear Regulator

Dual High and Low-Power Linear Regulator Fits in Single Package to Save Space

Product Details

Key Features

Applications/Uses

Simplified Block Diagram

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Key Features

  • Low Cost
  • Guaranteed 250mA and 100mA Output Currents, with Current Limiting
  • Dual Mode Operation:
    • Fixed or Adjustable Output from +2V to +11V
  • +2.5V to +11.5V Input Range
  • 160mV Dropout Voltage at 200mA Output Current
  • Low Supply Current-Even in Dropout
    • 200µA Operating
    • <1µA Shutdown
  • Power-Good Indicator
  • Reverse-Battery Protection
  • Thermal Overload Protection

Applications/Uses

  • Cell Phones
  • Cordless Phones
  • Electronic Planners
  • Handheld Instruments (PDAs, Palmtops)
  • Modems
  • PCMCIA Cards
  • PCS Phones

Description

The MAX8862 low-cost, low-dropout, dual linear voltage regulator is ideal for battery-powered and portable applications. The regulators have independent supply inputs and provide 250mA and 100mA, respectively, with a full-load dropout voltage of 160mV. Both regulators use P-channel MOSFET pass transistors and maintain low quiescent current independent of load current. In dropout, the MOSFET does not suffer from excessive base currents, as do saturated PNP transistors.

The MAX8862 output voltage is preset to 4.95V (L), 3.175V (T), or 2.85V (R). This device employs Dual Mode™ operation, allowing user-adjustable outputs from +2V to +11V with external resistors. The input supply-voltage range is 2.5V to 11.5V. Other features include independent shutdown, power-good indicator, short-circuit and reverse-battery protection, and thermal shutdown.

The MAX8862's regulators are ideal power supplies for the radio and the microcontroller (µC) used in digital, cordless, and PCS phones. The main regulator is optimized for superior transient and dynamic response, while the secondary regulator exhibits low-output, wideband noise.

The MAX8862 comes in a 16-pin SO package with a lead frame that uses multiple GND pins as a heat sink for additional thermal dissipation.

Simplified Block Diagram

MAX8862, MAX8862L, MAX8862R, MAX8862T: Typical Operating Circuit MAX8862, MAX8862L, MAX8862R, MAX8862T: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .