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MAX1982, MAX1982EUT, MAX1983
Low-Voltage, Low-Dropout Linear Regulators with External Bias Supply


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Status
Active: In Production.

Description
FULL DATA SHEET (PDF, 236kB)
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The MAX1982/MAX1983 are low-voltage, low-dropout linear regulators with an external bias supply input. The 5V bias supply drives the gate of the internal N-channel pass transistor, making these devices ideal for applications that require low-voltage outputs from low-voltage inputs. The MAX1982 delivers 1.2V (±3%) at 300mA from an input voltage of 1.25V to 5.5V. The MAX1983 delivers an adjustable output voltage from 0.8V to 2V.

The MAX1982/MAX1983 include a current-limit and thermal shutdown that protects the regulator in the event of a fault condition. Both devices are offered in a 6-pin SOT23 package and are specified over the extended (-40°C to +85°C) temperature range.

An evaluation kit is available:  MAX1982EVKIT  

Key Features   Applications/Uses
  • Low-Cost 1.2V, 300mA VID Supply
  • ±3% Output Voltage Accuracy
  • No Minimum Load Current Required
  • 1.25V to 5.5V Input Supply Voltage
  • 5V Input Bias Supply Voltage
  • Power-Good (PGOOD) Open-Drain Output with 1ms Rising Edge Propagation Delay (MAX1982)
  • Adjustable Output Voltage (MAX1983)
  • Low Supply Current (IBIAS + IIN = 165µA typ)
  • 5µA (max) Shutdown Supply Current
  • Tiny 6-Pin SOT23 Package

 
  • Cell Phones
  • Low-Dropout Regulators with External Bias Supply
  • Notebook Computers
  • PDAs
  • VID Power Supplies

    Key Specifications:  Linear Regulators
    Part Number Regulators VIN
    (V)
    VIN
    (V)
    Preset VOUT
    (V)
    Adj. VOUT
    (V)
    Adj. VOUT
    (V)
    VDROPOUT @Rated ILOAD
    (V)
    Rated ILOAD
    (mA)
    ICC
    (µA)
    Low Batt./ Pwr. Fail Out POK/Reset Thresh.
    (V)
    Watchdog Reverse Batt. Protect. Package/Pins Smallest Available Pckg.
    (mm2)
    Oper. Temp.
    (°C)
    Price
    min max min max typ max nom max w/pins See Notes
    MAX1982  1 1.25 5.5 1.2 - - 0.35 300 250 No Vout-9% No No
    SOT/6
    9 -40 to +85 $0.74 @1k
    MAX1983  - 0.8 2 -
    SOT/6
    $0.74 @1k
    See All Linear Regulators (153)

    Diagram
    MAX1982, MAX1983: Typical Operating Circuit
    Typical Operating Circuit

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    Document Ref.: 19-2560; Rev 1; 2009-06-03
    This page last modified: 2009-06-03


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