REG101NA-A/3K by Texas Instruments | LDO Regulators | Avnet ASIA
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REG101NA-A/3K

Texas Instruments

LDO Regulator Pos 2.5V to 5.5V 0.1A 5-Pin SOT-23 T/R

Manufacturer Part #: REG101NA-A/3K

Alternate Part #: REG101NA-A/3K


RoHS Compliant

Descriptions

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Information

The REG101 is a family of low-noise, low-dropout linear regulators with low ground pin current. Its new DMOS topology provides significant improvement over previous designs, including low dropout voltage (only 60mV typ at full load), and better transient performance. In addition, no output capacitor is required for stability, unlike conventional low-dropout regulators that are difficult to compensate and require expensive low ESR capacitors greater than 1µF.

Typical ground pin current is only 500µA (at IOUT = 100mA) and drops to 10nA when not in enabled mode. Unlike regulators with PNP pass devices, quiescent current remains relatively constant over load variation and under dropout conditions.

The REG101 has very low output noise (typically 23µVrms for VOUT = 3.3V with CNR = 0.01µF), making it ideal for use in portable communications equipment. Accuracy is maintained over temperature, line, and load variations. Key parameters are guaranteed over the specified temperature range (-40°C to +85°C).

The REG101 is well protected—internal circuitry provides a current limit which protects the load from damage. Thermal protection circuitry keeps the chip from being damaged by excessive temperature. The REG101 is available in the SOT23-5 and the SO-8 packages.

Key Features

  • NEW DMOS TOPOLOGY:
    • Ultra Low Dropout Voltage:
      • 60mV typ at 100mA
      • Output capacitor NOT required for stability
  • FAST TRANSIENT RESPONSE
  • VERY LOW NOISE: 23 µVrms
  • HIGH ACCURACY: ±1.5% max
  • HIGH EFFICIENCY:
    • IGND = 500 µA at IOUT = 100mA
    • Not Enabled: IGND = 10nA
  • 2.5V,2.8V,2.85V,3.0V,3.3V,5.0V,AND ADJUSTABLE OUTPUT VERSIONS
  • OTHER OUTPUT VOLTAGES AVAILABLE UPON REQUEST
  • FOLDBACK CURRENT LIMIT
  • THERMAL PROTECTION
  • SMALL SURFACE-MOUNT PACKAGES:
    • SOT23-5 and SO-8
  • APPLICATIONS
    • PORTABLE COMMUNICATION DEVICES
    • BATTERY-POWERED EQUIPMENT
    • PERSONAL DIGITAL ASSISTANTS
    • MODEMS
    • BAR-CODE SCANNERS
    • BACKUP POWER SUPPLIES
  • Technical Attributes

    Description
    Value
    Find similar Parts
    Minimum Input Voltage
    1.8 V
    Lead Finish
    Gold
    Maximum Output Current
    0.1 A
    Junction to Ambient
    200 °C/W
    Product Dimensions
    2.9 x 1.6 x 1.15 mm
    Polarity
    Positive
    Maximum Input Voltage
    10 V
    Output Type
    Adjustable
    Supplier Package
    SOT-23
    Accuracy
    ±1.5 %
    Typical Dropout Voltage @ Current
    0.004@2mA|0.06@100mA V
    Maximum Dropout Voltage @ Current
    0.01@2mA|0.1@100mA V
    Screening Level
    Industrial
    MSL Level
    1
    Pin Count
    5
    Function
    LDO
    Output Voltage
    2.5 to 5.5 V
    Number of Outputs
    1
    Operating Temperature
    -40 to 85 °C
    Input Voltage Range
    10 to 1.8 V
    Mounting
    Surface Mount
    Max Processing Temp
    260
    Reference Voltage
    1.267 V

    ECCN / UNSPSC

    Description
    Value
    ECCN:
    EAR99
    SCHEDULE B:
    8542 2121-00
    HTSN:
    8542 2121-00

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