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具有反向电压保护功能的 500mA、16V、可调节低压降稳压器
Output options Adjustable Output
Iout (Max) (A) 0.5
Vin (Max) (V) 16
Vin (Min) (V) 2.5
Vout (Max) (V) 6.5
Vout (Min) (V) 1.3
Noise (uVrms) 300
Iq (Typ) (mA) 8
Thermal resistance θJA (°C/W) 116
Rating Catalog
Load capacitance (Min) (μF) 2.2
Regulated outputs (#) 1
Features Reverse voltage protection
Accuracy (%) 2
PSRR @ 100 KHz (dB) 30
Dropout voltage (Vdo) (Typ) (mV) 500
Operating temperature range (C) -40 to 125
  • Adjustable Output Voltage
  • 1%/2% Accuracy (25°C/Full Range)
  • 500-mV (Maximum) Dropout at Full Load of
    500mA
  • Tight Regulation Overtemperature Range
    • 0.1%/V (Maximum) Line Regulation
    • 0.7% (Maximum) Load Regulation
  • Ultra Low-Noise Capability (300nV/√HzTypical)
  • Shutdown Current of 3μA (Maximum)
  • Low Temperature Coefficient
  • Current Limiting and Thermal Protection
  • Stable With Minimum Load of 1mA
  • Reverse-Battery Protection
  • Applications
    • Portable Applications (PDAs, Laptops,
      CellPhones)
    • Consumer Electronics
    • Post-Regulation for SMPS
  • Available in Convenient SOIC-8 Surface-Mount
    Package

The TL5209 device is 500-mA low-dropout (LDO) regulator that is well suited for portable applications. It has a lower quiescent current than most traditional PNP regulators and allows for a shutdown current of 0.05 μA (typical). The TL5209 also has very good dropout voltage characteristics, requiring a maximum dropout of 10 mV at light loads and 500mV at full load. In addition, the LDO also has a 1% output voltage accuracy and very tight line and load regulation that is comparable to its CMOS counterparts.

For noise-sensitive applications, the TL5209 allows for low-noise capability through an external bypass capacitor connected to the BYP pin, which reduces the output noise of the regulator. Other features include current limiting, thermal shutdown, reverse-battery protection, and low temperature coefficient.

The TL5209 is available with adjustable output. Offered in an SOIC-8 surface-mount package, the TL5209 is characterized for operation over the virtual junction temperature ranges of ?40°C to 125°C.