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MAX8877, MAX8878
Low-Noise, Low-Dropout, 150mA Linear Regulators with '2982 Pinout

SOT23 Regulator Saves Space


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Description
FULL DATA SHEET (PDF, 400kB)
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The MAX8877/MAX8878 low-noise, low-dropout linear regulators operate from a 2.5V to 6.5V input and deliver up to 150mA. These devices are pin-compatible with the industry-standard '2982 and offer an improved dropout voltage. Typical output noise is 30µVRMS, and typical dropout is only 165mV at 150mA. The output voltage is preset to voltages in the range of 1.5V to 5.0V, in 100mV increments.

Designed with an internal P-channel MOSFET pass transistor, the MAX8877/MAX8878 maintain a low 100µA supply current, independent of the load current and dropout voltage. Other features include a 10nA logic-controlled shutdown mode, short-circuit and thermal-shutdown protection, and reverse battery protection. The MAX8878 also includes an auto-discharge function, which actively discharges the output voltage to ground when the device is placed in shutdown. Both devices come in regular and thin 5-pin SOT23 package.

Key Features   Applications/Uses
  • Pin-Compatible with the Industry-Standard '2982
  • Low Output Noise: 30µVRMS
  • Low 55mV Dropout at 50mA Output (165mV at 150mA output)
  • Low 85µA No-Load Supply Current
  • Low 100µA Operating Supply Current (even in dropout)
  • Thermal-Overload and Short-Circuit Protection
  • Reverse Battery Protection
  • Output Current Limit
  • Preset Output Voltages (±1.4% Accuracy)
  • 10nA Logic-Controlled Shutdown

 
  • Audio Systems
  • Cordless Phones
  • Electronic Planners
  • Handheld Instruments (PDAs, Palmtops)
  • Modems
  • Palmtop Computers
  • PCMCIA Cards
  • PCS Telephones

    Key Specifications:   Linear Regulators
    Part Number Regulators per Pkg. Min. VIN (V) Max. VIN (V) Preset VOUT (V) Typ. VDROPOUT@ Rated ILOAD (V) Rated ILOAD (mA) Max. ICC (µA) Low Battery/ Power Fail Output POK/ Reset Output Watchdog Reverse Battery Protection Package Smallest Available Package (max w/pins) (mm2) Operating Temp. Range (°C) Price**
    MAX8877  1 2.5 5.5 1.5 to 5.0 0.16 150 180 No No No Yes SOT-23/5 8 -40 to +85 $0.77 @ 1k
    MAX8878  $0.77 @ 1k
    See All Linear Regulators (138)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

    Diagram
    MAX8877, MAX8878: Typical Operating Circuit
    Typical Operating Circuit

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    Document Ref.: 19-1301; Rev 2; 2001-01-01
    This page last modified: 2007-06-01




             


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