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Product Variant Information section
Product Specification Section
Pricing Section

Stock: 192,500

On Order:Order inventroy details 30,000
Factory Stock:Factory Stock: 0
Factory Lead Time: 6 Weeks
Minimum Order: 2,500
Multiple Of: 2,500
Quantity Web Price
2,500 $0.37
5,000 $0.30
7,500+ $0.295


Attributes Table
Input Voltage-Max 16V
Output Voltage Fixed 3.3V
Dropout Voltage-Max 1.3V
Output Current-Max 500mA
Tolerance (%) ±2%
Operating Temp Range -40°C to +125°C
Regulator Topology Fixed
Quiescent Current 100µA
No. of Outputs Single
Output Noise 50µV
Load Regulation 16mV
Line Regulation 16mV
Features and Applications

The LF33CDT-TR is a very low drop regulators available in PENTAWATT, TO-220, TO-220FP, DPAK and PPAK package and in a wide range of output voltages. The very low drop voltage (0.45 V) and the very low quiescent current make them particularly suitable for low noise, low power applications and specially in battery powered systems.

In the 5 pins configuration (PENTAWATT and PPAK) a shutdown logic control function is available (pin 2, TTL compatible). This means that when the device is used as a local regulator, it is possible to put a part of the board in standby, decreasing the total power consumption. In the three terminal configuration the device has the same electrical performance, but is fixed in the ON state. It requires only a 2.2 μF capacitor for stability allowing space and cost saving.


  • Very low dropout voltage (0.45 V)
  • Very low quiescent current (typ. 50 μA in OFF mode, 500 μA in ON mode)
  • Output current up to 500 mA
  • Logic-controlled electronic shutdown
  • Output voltages of 1.5; 1.8; 2.5; 3.3; 4.7; 5; 6; 8; 8.5; 9; 12 V
  • Automotive Grade product: 1.8 V, 2.5 V, 3.3 V, 5.0 V, 8.0 V, 8.5 V VOUT in DPAK and PPAK packages
  • Internal current and thermal limit
  • Only 2.2 μF for stability
  • Available in ± 1% (AB) or ± 2% (C) selection at 25 °C
  • Supply voltage rejection: 80 db (typ.)
  • Temperature range: -40 to 125 °C

View the Complete family of LF33 Linear Regulators