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                                                                                                    1. Home
                                                                                                    2. Semiconductors - ICs
                                                                                                    3. Power Management ICs - PMIC
                                                                                                    4. Voltage Regulators
                                                                                                    5. LDO Voltage Regulators
                                                                                                    Print Page

                                                                                                    LT1117CST-3.3#PBF

                                                                                                    LDO Voltage Regulator, Fixed, 2.45 V to 15 V in, 1.1 V / 0.8 A out, SOT-223-3

                                                                                                    ANALOG DEVICES
                                                                                                    ANALOG DEVICES LT1117CST-3.3#PBF
                                                                                                    Image is for illustrative purposes only. Please refer to product description.
                                                                                                    ManufacturerANALOG DEVICES
                                                                                                    Manufacturer Part NoLT1117CST-3.3#PBF
                                                                                                    Newark Part No.51AK7798
                                                                                                    Product Range3.3V 800mA LDO Voltage Regulators
                                                                                                    Your Part Number
                                                                                                    Technical Datasheet

                                                                                                    Data Sheet

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                                                                                                    Product Information

                                                                                                    ANALOG DEVICES
                                                                                                    ManufacturerANALOG DEVICES
                                                                                                    Manufacturer Part NoLT1117CST-3.3#PBF
                                                                                                    Newark Part No.51AK7798
                                                                                                    Product Range3.3V 800mA LDO Voltage Regulators
                                                                                                    Technical Datasheet

                                                                                                    Data Sheet

                                                                                                    Output TypeFixed
                                                                                                    Input Voltage Min2.45V
                                                                                                    Input Voltage Max15V
                                                                                                    Fixed Output Voltage Nom3.3V
                                                                                                    No. of Outputs1Outputs
                                                                                                    Adjustable Output Voltage Min-
                                                                                                    Output Voltage - Nom3.3V
                                                                                                    Output Voltage Nom3.3V
                                                                                                    Adjustable Output Voltage Max-
                                                                                                    Output Voltage Min-
                                                                                                    Output Voltage Max-
                                                                                                    Output Current800mA
                                                                                                    PolarityPositive Output
                                                                                                    Dropout Voltage Vdo1.1V
                                                                                                    Max Output Current800mA
                                                                                                    Output Current Max800mA
                                                                                                    LDO Regulator Case StyleSOT-223
                                                                                                    Output Current Max800mA
                                                                                                    Dropout Voltage Typ @ Current1.1V
                                                                                                    Dropout Voltage - Typ @ Current1.1V
                                                                                                    Dropout Voltage Typ @ Current1.1V
                                                                                                    IC MountingSurface Mount
                                                                                                    IC Case / PackageSOT-223
                                                                                                    No. of Pins3Pins
                                                                                                    Operating Temperature Min0°C
                                                                                                    Operating Temperature Max125°C
                                                                                                    Product Range3.3V 800mA LDO Voltage Regulators
                                                                                                    Automotive Qualification Standard-
                                                                                                    MSLMSL 1 - Unlimited
                                                                                                    SVHCLead (25-Jun-2025)

                                                                                                    Product Overview

                                                                                                    LT1117 is a positive low dropout regulator designed to provide up to 800mA of output current. It is designed specifically to be used in active terminators for the SCSI bus. All internal circuitry is designed to operate down to 1V input to output differential. Dropout voltage is guaranteed at a maximum of 1.2V at 800mA, decreasing at lower load currents. On chip trimming adjusts the reference/output voltage to within ±1%. Current limit is also trimmed in order to minimize the stress on both the regulator and the power source circuitry under overload conditions. The low profi le surface mount SOT-223 package allows the device to be used in applications where space is limited. The LT1117 requires a minimum of 10μF of output capacitance for stability. Output capacitors of this size or larger are normally included in most regulator designs.

                                                                                                    • Fixed voltage of 3.3V
                                                                                                    • Operates down to 1V dropout
                                                                                                    • Guaranteed dropout voltage at multiple current levels
                                                                                                    • 0.2% line regulation max
                                                                                                    • 0.4% load regulation max
                                                                                                    • 3-lead plastic SOT-223 package
                                                                                                    • Temperature range from 0°C to 125°C

                                                                                                    Notes

                                                                                                    ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party

                                                                                                    Technical Specifications

                                                                                                    Output Type

                                                                                                    Fixed

                                                                                                    Input Voltage Max

                                                                                                    15V

                                                                                                    No. of Outputs

                                                                                                    1Outputs

                                                                                                    Output Voltage - Nom

                                                                                                    3.3V

                                                                                                    Adjustable Output Voltage Max

                                                                                                    -

                                                                                                    Output Voltage Max

                                                                                                    -

                                                                                                    Polarity

                                                                                                    Positive Output

                                                                                                    Max Output Current

                                                                                                    800mA

                                                                                                    LDO Regulator Case Style

                                                                                                    SOT-223

                                                                                                    Dropout Voltage Typ @ Current

                                                                                                    1.1V

                                                                                                    Dropout Voltage Typ @ Current

                                                                                                    1.1V

                                                                                                    IC Case / Package

                                                                                                    SOT-223

                                                                                                    Operating Temperature Min

                                                                                                    0°C

                                                                                                    Product Range

                                                                                                    3.3V 800mA LDO Voltage Regulators

                                                                                                    MSL

                                                                                                    MSL 1 - Unlimited

                                                                                                    Input Voltage Min

                                                                                                    2.45V

                                                                                                    Fixed Output Voltage Nom

                                                                                                    3.3V

                                                                                                    Adjustable Output Voltage Min

                                                                                                    -

                                                                                                    Output Voltage Nom

                                                                                                    3.3V

                                                                                                    Output Voltage Min

                                                                                                    -

                                                                                                    Output Current

                                                                                                    800mA

                                                                                                    Dropout Voltage Vdo

                                                                                                    1.1V

                                                                                                    Output Current Max

                                                                                                    800mA

                                                                                                    Output Current Max

                                                                                                    800mA

                                                                                                    Dropout Voltage - Typ @ Current

                                                                                                    1.1V

                                                                                                    IC Mounting

                                                                                                    Surface Mount

                                                                                                    No. of Pins

                                                                                                    3Pins

                                                                                                    Operating Temperature Max

                                                                                                    125°C

                                                                                                    Automotive Qualification Standard

                                                                                                    -

                                                                                                    SVHC

                                                                                                    Lead (25-Jun-2025)

                                                                                                    Technical Docs (1)

                                                                                                    Technical Data Sheet EN

                                                                                                    Legislation and Environmental

                                                                                                    US ECCN:EAR99
                                                                                                    EU ECCN:Unknown
                                                                                                    RoHS Compliant:Y-Ex

                                                                                                    RoHS

                                                                                                    RoHS Phthalates Compliant:Yes

                                                                                                    RoHS

                                                                                                    SVHC:Lead (25-Jun-2025)
                                                                                                    Download Product Compliance Certificate

                                                                                                    Product Compliance Certificate

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