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LD1117 Series 1300 mA 3.3 V Fixed SMT Positive Voltage Regulator - TO-252

Modèle ECAD:
Nom du fabricant: STMicroelectronics
Emballage standard:
Code de date: 2245
Product Specification Section
STMicroelectronics LD1117DT33CTR - Caractéristiques techniques
Attributes Table
Input Voltage-Max: 15V
Output Voltage Fixed: 3.3V
Dropout Voltage-Max: 1.2V
Output Current-Max: 1300mA
Rated Power: 12W
Tolerance (%): ±1%
Operating Temp Range: -40°C to +125°C
Regulator Topology: Fixed
Quiescent Current: 10mA
No. of Outputs: Single
Output Noise: 100µV
Load Regulation: 30mV
Line Regulation: 30mV
Style d'emballage :  TO-252-3 (DPAK)
Méthode de montage : Surface Mount
Fonctionnalités et applications
The LD1117DT33CTR is a low drop voltage regulator able to provide up to 800 mA of output current, available even in adjustable version (VREF = 1.25 V). Concerning fixed versions, are offered the following output voltages: 1.2 V, 1.8 V, 2.5 V, 2.85 V, 3.0 V, 3.3 V and 5.0 V. The 2.85 V type is ideal for SCSI-2 lines active termination. The device is supplied in: SOT-223, DPAK, SO-8 and TO-220.

The SOT-223 and DPAK surface mount packages optimize the thermal characteristics even offering a relevant space saving effect. High efficiency is assured by NPN pass transistor. In fact in this case, unlike than PNP one, the quiescent current flows mostly into the load. Only a very common 10 μF minimum capacitor is needed for stability. On chip trimming allows the regulator to reach a very tight output voltage tolerance, within ± 1 % at 25 °C.


  • Low dropout voltage (1 V typ.)
  • 2.85 V device performances are suitable for SCSI-2 active termination
  • Output current up to 800 mA
  • Fixed output voltage of: 1.2 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V, 5.0 V
  • Adjustable version availability (VREF = 1.25 V)
  • Internal current and thermal limit
  • Available in ± 1 % (at 25 °C) and 2 % in full temperature range
  • Supply voltage rejection: 75 dB (typ.)

View the Complete family of LD1117 Linear Regulators

Pricing Section
Stock global :
845 000
d’Allemagne (En ligne seulement):
845 000
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250 000
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Délai d'usine :
12 Semaines
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