Part Details for LT1129IST-3.3 by Analog Devices Inc
Results Overview of LT1129IST-3.3 by Analog Devices Inc
- Distributor Offerings: (0 listings)
- Number of FFF Equivalents: (9 replacements)
- CAD Models: (Request Part)
- Number of Functional Equivalents: (10 options)
- Part Data Attributes: (Available)
- Reference Designs: (Not Available)
Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.
LT1129IST-3.3 Information
LT1129IST-3.3 by Analog Devices Inc is a Linear Regulator IC.
Linear Regulator ICs are under the broader part category of Power Circuits.
A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.
Part Details for LT1129IST-3.3
LT1129IST-3.3 CAD Models
LT1129IST-3.3 Part Data Attributes
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LT1129IST-3.3
Analog Devices Inc
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Datasheet
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LT1129IST-3.3
Analog Devices Inc
Fixed Positive LDO Regulator, 3.3V, 0.7V Dropout, PSSO3
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| Rohs Code | No | |
| Part Life Cycle Code | Obsolete | |
| Ihs Manufacturer | ANALOG DEVICES INC | |
| Package Description | PLASTIC, SOT-223, 3 PIN | |
| Reach Compliance Code | not_compliant | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.39.00.01 | |
| Samacsys Manufacturer | Analog Devices | |
| Dropout Voltage1-Max | 0.7 V | |
| Input Voltage-Max | 20 V | |
| Input Voltage-Min | 3.8 V | |
| JESD-30 Code | R-PSSO-G3 | |
| JESD-609 Code | e0 | |
| Length | 6.505 mm | |
| Moisture Sensitivity Level | 1 | |
| Number of Functions | 1 | |
| Number of Terminals | 3 | |
| Operating Temperature TJ-Max | 125 °C | |
| Operating Temperature TJ-Min | -40 °C | |
| Output Current1-Max | 0.7 A | |
| Output Voltage1-Max | 3.4 V | |
| Output Voltage1-Min | 3.2 V | |
| Output Voltage1-Nom | 3.3 V | |
| Package Body Material | PLASTIC/EPOXY | |
| Package Code | SOP | |
| Package Equivalence Code | SOT-223 | |
| Package Shape | RECTANGULAR | |
| Package Style | SMALL OUTLINE | |
| Peak Reflow Temperature (Cel) | 235 | |
| Qualification Status | Not Qualified | |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR | |
| Seated Height-Max | 1.8 mm | |
| Surface Mount | YES | |
| Technology | BIPOLAR | |
| Terminal Finish | Tin/Lead (Sn/Pb) | |
| Terminal Form | GULL WING | |
| Terminal Pitch | 2.3 mm | |
| Terminal Position | SINGLE | |
| Time@Peak Reflow Temperature-Max (s) | 20 | |
| Voltage Tolerance-Max | 3% | |
| Width | 3.505 mm |
Alternate Parts for LT1129IST-3.3
This table gives cross-reference parts and alternative options found for LT1129IST-3.3. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of LT1129IST-3.3, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.
| Part Number | Manufacturer | Composite Price | Description | Compare |
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| LT1129CST-3.3#TRPBF | Analog Devices Inc | $4.4387 | Micropower Low Dropout Regulators with Shutdown | LT1129IST-3.3 vs LT1129CST-3.3#TRPBF |
| LT1129IST-3.3#TRPBF | Analog Devices Inc | $4.9723 | Micropower Low Dropout Regulators with Shutdown | LT1129IST-3.3 vs LT1129IST-3.3#TRPBF |
| LT1129IST-3.3#PBF | Analog Devices Inc | $7.0766 | Micropower Low Dropout Regulators with Shutdown | LT1129IST-3.3 vs LT1129IST-3.3#PBF |
| LT1129IST-3.3 | Linear Technology | $9.7138 | LT1129 - Micropower Low Dropout Regulators with Shutdown; Package: SOT; Pins: 3; Temperature Range: -40°C to 85°C | LT1129IST-3.3 vs LT1129IST-3.3 |
| LT1129CST-3.3 | Linear Technology | Check for Price | LT1129 - Micropower Low Dropout Regulators with Shutdown; Package: SOT; Pins: 3; Temperature Range: 0°C to 70°C | LT1129IST-3.3 vs LT1129CST-3.3 |
| LT1129CST-3.3#TRPBF | Linear Technology | Check for Price | LT1129 - Micropower Low Dropout Regulators with Shutdown; Package: SOT; Pins: 3; Temperature Range: 0°C to 70°C | LT1129IST-3.3 vs LT1129CST-3.3#TRPBF |
| LT1129IST-3.3#PBF | Linear Technology | Check for Price | LT1129 - Micropower Low Dropout Regulators with Shutdown; Package: SOT; Pins: 3; Temperature Range: -40°C to 85°C | LT1129IST-3.3 vs LT1129IST-3.3#PBF |
| LT1129IST-3.3#TR | Linear Technology | Check for Price | LT1129 - Micropower Low Dropout Regulators with Shutdown; Package: SOT; Pins: 3; Temperature Range: -40°C to 85°C | LT1129IST-3.3 vs LT1129IST-3.3#TR |
| LT1129CST-3.3 | Analog Devices Inc | Check for Price | Fixed Positive LDO Regulator, 3.3V, 0.7V Dropout, PSSO3 | LT1129IST-3.3 vs LT1129CST-3.3 |
LT1129IST-3.3 Frequently Asked Questions (FAQ)
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The maximum input voltage that can be applied to the LT1129IST-3.3 is 15V, but it's recommended to keep it below 12V for optimal performance and reliability.
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To ensure the stability of the output voltage, it's essential to use a minimum output capacitance of 10uF, and a maximum ESR of 1 ohm. Additionally, the output capacitor should be placed as close to the output pin as possible.
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The minimum input voltage required for the LT1129IST-3.3 to operate is 3.5V, but it's recommended to keep it above 4V for optimal performance.
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The LT1129IST-3.3 is rated for operation up to 125°C, but it's recommended to derate the output current and input voltage at higher temperatures to ensure reliability and prevent overheating.
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To reduce the noise and ripple in the output voltage, it's recommended to use a low-ESR output capacitor, and to add a 10nF to 100nF ceramic capacitor in parallel with the output capacitor. Additionally, keeping the input voltage as smooth as possible can also help reduce noise and ripple.