LD1117A

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Low drop fixed and adjustable positive voltage regulators

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Product overview

Description

The LD1117A is a low drop voltage regulator able to provide up to 1 A of output current, available also in adjustable versions (VREF= 1.25 V). In fixed versions, the following output voltages are offered: 1.2 V, 1.8 V, and 3.3 V. The device is supplied in: SOT-223, DPAK and TO-220. Surface mounted packages optimize the thermal characteristics while offering a relevant space saving advantage. High efficiency is assured by an NPN pass transistor. Only a very common 10 μF minimum capacitor is needed for stability. Chip trimming allows the regulator to reach a very tight output voltage tolerance, within ± 2% at 25 °C.

  • All features

    • Low dropout voltage:
      • 1.15 V typ. @ IOUT= 1 A, 25 °C
    • Very low quiescent current:
      • 5 mA typ. @ 25 °C
    • Output current up to 1 A
    • Fixed output voltage of:
      • 1.2 V, 1.8 V, 3.3 V
    • Adjustable version availability (VREF= 1.25 V)
    • Internal current and thermal limit
    • Only 10 μF for stability
    • Available in ± 2% (at 25 °C) and 4% in full temperature range
    • High supply voltage rejection:
      • 80 dB typ. (at 25 °C)
    • Temperature range: 0 °C to 125 °C

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STMicroelectronics - LD1117A

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LD1117ADT-TR
Active
DPAK Industrial Ecopack2
LD1117ADT12TR
Active
DPAK Industrial Ecopack2
LD1117ADT18TR
Active
DPAK Industrial Ecopack2
LD1117ADT33TR
Active
DPAK Industrial Ecopack2
LD1117AS12TR
Active
SOT-223 Industrial Ecopack2
LD1117AS18TR
Active
SOT-223 Industrial Ecopack2
LD1117AS33TR
Active
SOT-223 Industrial Ecopack3
LD1117ASTR
Active
SOT-223 Industrial Ecopack2

LD1117ADT-TR

Package:

DPAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DPAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD1117ADT12TR

Package:

DPAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DPAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD1117ADT18TR

Package:

DPAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DPAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD1117ADT33TR

Package:

DPAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DPAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD1117AS12TR

Package:

SOT-223

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-223

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD1117AS18TR

Package:

SOT-223

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-223

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD1117AS33TR

Package:

SOT-223

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-223

Grade

Industrial

RoHS Compliance Grade

Ecopack3

LD1117ASTR

Package:

SOT-223

Material Declaration**:

Marketing Status

Active

Package

SOT-223

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

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ECCN (EU)
Temperature (°C)
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LD1117ADT-TR
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LD1117ADT33TR
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LD1117ASTR
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LD1117ADT18TR
Available at distributors

Distributor availability of LD1117ADT18TR

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LD1117AS12TR
Available at distributors

Distributor availability of LD1117AS12TR

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Distributor reported inventory date:

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LD1117ADT12TR
Available at distributors

Distributor availability of LD1117ADT12TR

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Distributor reported inventory date:

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LD1117AS18TR
Available at distributors

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Distributor reported inventory date:

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LD1117AS33TR
Available at distributors

Distributor availability of LD1117AS33TR

Distributor Name
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Distributor reported inventory date:

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LD1117ADT-TR Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

LD1117ADT-TR

Operating Temperature (°C)

Min:

Max:

Distributor Name

Distributor reported inventory date:

LD1117ADT33TR Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

LD1117ADT33TR

Operating Temperature (°C)

Min:

Max:

Distributor Name

Distributor reported inventory date:

LD1117ASTR Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

LD1117ASTR

Operating Temperature (°C)

Min:

Max:

Distributor Name

Distributor reported inventory date:

LD1117ADT18TR Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

LD1117ADT18TR

Operating Temperature (°C)

Min:

Max:

Distributor Name

Distributor reported inventory date:

LD1117AS12TR Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

LD1117AS12TR

Operating Temperature (°C)

Min:

Max:

Distributor Name

Distributor reported inventory date:

LD1117ADT12TR Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

LD1117ADT12TR

Operating Temperature (°C)

Min:

Max:

Distributor Name

Distributor reported inventory date:

LD1117AS18TR Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

LD1117AS18TR

Operating Temperature (°C)

Min:

Max:

Distributor Name

Distributor reported inventory date:

LD1117AS33TR Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

LD1117AS33TR

Operating Temperature (°C)

Min:

Max:

Distributor Name

Distributor reported inventory date:

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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors