Part Details for LT1121CST-3.3#PBF by Analog Devices Inc
Results Overview of LT1121CST-3.3#PBF by Analog Devices Inc
- Distributor Offerings: (9 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.
LT1121CST-3.3#PBF Information
LT1121CST-3.3#PBF 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.
Price & Stock for LT1121CST-3.3#PBF
| Part # | Distributor | Description | Stock | Price | Buy | |
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DISTI #
51AK7814
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Newark | Ldo, Fixed, 3.3V, 0.15A, Sot-223-3, Output Type:Fixed, Input Voltage Min:4.17V, Input Voltage Max:30V, No. Of Outputs:-, Output Voltage Min:-, Output Voltage Max:-, Polarity:-, Ic Mounting:Surface Mount, Ic Case/Package:Sot-223 Rohs Compliant: Yes |Analog Devices LT1121CST-3.3#PBF RoHS: Compliant Min Qty: 1 Package Multiple: 1 Date Code: 1 Container: Bulk | 65 |
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$3.4900 / $6.1800 | Buy Now |
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DISTI #
505-LT1121CST-3.3#PBF-ND
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DigiKey | IC REG LIN 3.3V 150MA SOT-223-3 Min Qty: 1 Lead time: 10 Weeks Container: Tube |
664 In Stock |
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$3.2375 / $7.7400 | Buy Now |
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DISTI #
584-LT1121CST-3.3PBF
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Mouser Electronics | LDO Voltage Regulators uP L Drop Regs w/ SD RoHS: Compliant | 166 |
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$3.3600 / $6.1800 | Buy Now |
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DISTI #
V36:1790_06414259
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Arrow Electronics | LDO Regulator Pos 3.3V 0.15A 4-Pin(3+Tab) SOT-223 Tube Min Qty: 156 Package Multiple: 78 Lead time: 10 Weeks Date Code: 2447 | Americas - 22 |
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$3.2300 / $3.4790 | Buy Now |
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Analog Devices Inc | uP L Drop Regs w/ SD Package Multiple: 78 | 4033 |
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$2.5900 / $7.7400 | Buy Now |
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Bristol Electronics | 78 |
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RFQ | ||
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Quest Components | FIXED POSITIVE LDO REGULATOR, 3.3V, 0.7V DROPOUT, BIPOLAR, PDSO4 | 4 |
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$4.0600 / $6.0900 | Buy Now |
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DISTI #
LT1121CST-3.3
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TME | IC: voltage regulator, LDO,fixed, 3.3V, 150mA, SOT223, SMD, Ch: 1 Min Qty: 1 | 0 |
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$3.0700 / $3.9900 | RFQ |
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DISTI #
LT1121CST-3.3PB
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Richardson RFPD | VOLTAGE REGULATOR RoHS: Compliant Min Qty: 156 | 0 |
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$3.3500 / $3.6700 | Buy Now |
Part Details for LT1121CST-3.3#PBF
LT1121CST-3.3#PBF CAD Models
LT1121CST-3.3#PBF Part Data Attributes
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LT1121CST-3.3#PBF
Analog Devices Inc
Buy Now
Datasheet
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Compare Parts:
LT1121CST-3.3#PBF
Analog Devices Inc
Micropower Low Dropout Regulators with Shutdown
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| Pbfree Code | No | |
| Rohs Code | Yes | |
| Part Life Cycle Code | Active | |
| Ihs Manufacturer | ANALOG DEVICES INC | |
| Package Description | SOT-323 | |
| Pin Count | 3 | |
| Manufacturer Package Code | 05-08-1630 | |
| Reach Compliance Code | not_compliant | |
| Samacsys Manufacturer | Analog Devices | |
| Adjustability | FIXED | |
| Dropout Voltage1-Max | 0.7 V | |
| Dropout Voltage1-Nom | 0.42 V | |
| Input Voltage Absolute-Max | 30 V | |
| Input Voltage-Max | 20 V | |
| Input Voltage-Min | 4.3 V | |
| JESD-30 Code | R-PDSO-G4 | |
| JESD-609 Code | e3 | |
| Length | 6.505 mm | |
| Line Regulation-Max | 0.01% | |
| Load Regulation-Max | 0.04% | |
| Moisture Sensitivity Level | 1 | |
| Number of Functions | 1 | |
| Number of Outputs | 1 | |
| Number of Terminals | 4 | |
| Operating Temperature TJ-Max | 125 °C | |
| Operating Temperature TJ-Min | ||
| Output Current1-Max | 0.15 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 | |
| Packing Method | TUBE | |
| Peak Reflow Temperature (Cel) | 260 | |
| 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 | Matte Tin (Sn) | |
| Terminal Form | GULL WING | |
| Terminal Pitch | 2.3 mm | |
| Terminal Position | DUAL | |
| Time@Peak Reflow Temperature-Max (s) | 30 | |
| Voltage Tolerance-Max | 3% | |
| Width | 3.505 mm |
Alternate Parts for LT1121CST-3.3#PBF
This table gives cross-reference parts and alternative options found for LT1121CST-3.3#PBF. 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 LT1121CST-3.3#PBF, 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 |
|---|---|---|---|---|
| LT1121IST-3.3#TRPBF | Analog Devices Inc | $4.7174 | Micropower Low Dropout Regulators with Shutdown | LT1121CST-3.3#PBF vs LT1121IST-3.3#TRPBF |
| LT1121CST-3.3#PBF | Linear Technology | Check for Price | LT1121 - Micropower Low Dropout Regulators with Shutdown; Package: SOT; Pins: 3; Temperature Range: 0°C to 70°C | LT1121CST-3.3#PBF vs LT1121CST-3.3#PBF |
| LT1121CST-3.3 | Analog Devices Inc | Check for Price | Fixed Positive LDO Regulator, 3.3V, 0.7V Dropout, BIPolar, PDSO4 | LT1121CST-3.3#PBF vs LT1121CST-3.3 |
| LT1121CST-3.3 | Linear Technology | Check for Price | LT1121 - Micropower Low Dropout Regulators with Shutdown; Package: SOT; Pins: 3; Temperature Range: 0°C to 70°C | LT1121CST-3.3#PBF vs LT1121CST-3.3 |
| LT1121IST-3.3 | Analog Devices Inc | Check for Price | Fixed Positive LDO Regulator, 3.3V, 0.7V Dropout, BIPolar, PDSO4 | LT1121CST-3.3#PBF vs LT1121IST-3.3 |
| LT1121IST-3.3 | Linear Technology | Check for Price | LT1121 - Micropower Low Dropout Regulators with Shutdown; Package: SOT; Pins: 3; Temperature Range: -40°C to 85°C | LT1121CST-3.3#PBF vs LT1121IST-3.3 |
| LT1121IST-3.3#TRPBF | Linear Technology | Check for Price | LT1121 - Micropower Low Dropout Regulators with Shutdown; Package: SOT; Pins: 3; Temperature Range: -40°C to 85°C | LT1121CST-3.3#PBF vs LT1121IST-3.3#TRPBF |
| LT1121IST-3.3#TR | Linear Technology | Check for Price | LT1121 - Micropower Low Dropout Regulators with Shutdown; Package: SOT; Pins: 3; Temperature Range: -40°C to 85°C | LT1121CST-3.3#PBF vs LT1121IST-3.3#TR |
| LT1121CST-3.3#TR | Linear Technology | Check for Price | LT1121 - Micropower Low Dropout Regulators with Shutdown; Package: SOT; Pins: 3; Temperature Range: 0°C to 70°C | LT1121CST-3.3#PBF vs LT1121CST-3.3#TR |
LT1121CST-3.3#PBF Frequently Asked Questions (FAQ)
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A good PCB layout for the LT1121CST-3.3 involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing trace lengths and widths to reduce noise and EMI.
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To ensure stability, ensure that the output capacitor is of sufficient size and type (e.g., X5R or X7R), and that the output voltage is within the recommended range. Also, avoid using capacitors with high ESR values.
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The maximum ambient temperature range for the LT1121CST-3.3 is -40°C to 125°C, but the device can operate up to 150°C with derating.
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Yes, the LT1121CST-3.3 is suitable for high-reliability and aerospace applications, as it is built with high-reliability materials and manufacturing processes, and meets various industry standards (e.g., MIL-STD-883).
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Use overvoltage protection (OVP) and undervoltage protection (UVP) circuits to prevent damage to the device. OVP can be achieved using a zener diode or a voltage supervisor, while UVP can be achieved using a voltage supervisor or a reset IC.