STMICROELECTRONICS  LF33CDT-TR  Fixed LDO Voltage Regulator, 3V to 16V, 450mV Dropout, 3.3Vout, 0.5Aout, TO-252-3


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Product Overview

The LF33CDT-TR is a Low-drop Voltage Regulator with inhibit function and 3.3V output voltage. Low quiescent current make it particularly suitable for low-noise, low power applications and especially in battery powered systems. In the 5-pin configuration (PPAK) a shutdown logic control function is available (pin 2, TTL compatible). This means that when the device is used as a local regulator, a part of the board can be put in standby, decreasing the total power consumption. In the 3-terminal configuration, the device has the same electrical performance, but it is fixed in ON state. It requires a capacitor of only 2.2µF for stability, saving board space and costs.
  • Very low drop-out voltage (0.45V)
  • Very low quiescent current (typical 50µA in OFF mode, 500µA in ON mode)
  • 500mA Output current
  • Logic-controlled electronic shutdown
  • Internal current and thermal limit
  • Available in ±1% (AB) or ±2% (C) selection at 25°C
  • 80dB Typical supply voltage rejection


Automotive; Power Management
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Product Information

  • Input Voltage Min 3V
  • Input Voltage Max 16V
  • Output Voltage Nom. 3.3V
  • Output Current 500mA
  • Dropout Voltage Vdo 450mV
  • LDO Regulator Case Style TO-252
  • No. of Pins 3Pins
  • Operating Temperature Min -40°C
  • Operating Temperature Max 125°C
  • Packaging Cut Tape
  • MSL -
  • SVHC No SVHC (17-Dec-2015)

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Availability:  537

  • 537 in stock for same day shipping
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    More stock available week commencing 5/30/16

Price for: Each (Supplied on Cut Tape)

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1 - 9 $1.71
10 - 24 $1.45
25 - 99 $1.22
100 - 249 $1.11
250 - 499 $1.01
500 - 999 $0.935
1000 - 2499 $0.83
2500+ $0.804

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Fixed LDO Voltage Regulator, 3V to 16V, 450mV Dropout, 3.3Vout, 0.5Aout, TO-252-3

Availability:​ 0

Price for: Each (Supplied on Full Reel)

2500+ $0.506 5000+ $0.474 7500+ $0.448

    More stock available week commencing 8/29/16

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Suggested Substitutes



Fixed LDO Voltage Regulator, 3V to 16V, 400mV Dropout, 3.3Vout, 0.5Aout, TO-252-3

Availability:​ 7,002  

Price for: Each (Supplied on Cut Tape)

1+ $0.708 10+ $0.576 100+ $0.43 500+ $0.407 More pricing


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Delivery in 5-7 days for in stock items

More stock available week commencing 9/12/16

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