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Adjustable and fixed low drop positive voltage regulator


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  • Part Number : LD1117DT18TR

  • Package/Case : DPAK

  • Brands : ST

  • Components Categories : Voltage Regulators - Linear

  • Datesheet : LD1117DT18TR DataSheet (PDF)

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Technical Attributes

DescriptionThe LD1117 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, 3.3 V and 5.0 V. 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. Features• 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, 3.3 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.)

Key Features

  • 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,
  • 3.3 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.)


The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Source Content uid LD1117DT18TR Part Life Cycle Code Active
Ihs Manufacturer STMICROELECTRONICS Part Package Code TO-252
Package Description TO-252, SMSIP3H,.38,90TB Pin Count 3
Reach Compliance Code not_compliant ECCN Code EAR99
HTS Code 8542.39.00.01 Factory Lead Time 54 Weeks
Samacsys Manufacturer STMicroelectronics Adjustability FIXED
Dropout Voltage1-Max 1.2 V Dropout Voltage1-Nom 1.1 V
Input Voltage Absolute-Max 15 V Input Voltage-Max 15 V
Input Voltage-Min 3.3 V JESD-30 Code R-PSSO-G2
JESD-609 Code e3 Length 6.5 mm
Line Regulation-Max 0.006% Load Regulation-Max 0.01%
Moisture Sensitivity Level 1 Number of Functions 1
Number of Outputs 1 Number of Terminals 2
Operating Temperature TJ-Max 125 °C Operating Temperature TJ-Min
Output Current1-Max 1.3 A Output Voltage1-Max 1.84 V
Output Voltage1-Min 1.76 V Output Voltage1-Nom 1.8 V
Package Body Material PLASTIC/EPOXY Package Code TO-252
Package Equivalence Code SMSIP3H,.38,90TB Package Shape RECTANGULAR
Package Style SMALL OUTLINE Packing Method TR, 13 INCH
Peak Reflow Temperature (Cel) 260 Qualification Status Not Qualified
Surface Mount YES Technology BIPOLAR
Terminal Finish Matte Tin (Sn) - annealed Terminal Form GULL WING
Terminal Pitch 2.28 mm Terminal Position SINGLE
Time@Peak Reflow Temperature-Max (s) 30 Voltage Tolerance-Max 2%
Width 6.1 mm

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