Analog Devices LT1121IST-3.3#PBF Linear Controllers
Linear Voltage Regulator IC Positive Fixed 1 Output 150mA SOT-223-3
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
LT1121IST-3.3#PBF
Detailed Description
IC REG LIN 3.3V 150MA SOT223-3
Package
TO-261-4, TO-261AA
Key Features
Package / Case: TO-261-4, TO-261AA; Mounting Type: Surface Mount
Lifecycle Status
Active
RoHS State
RoHS Compliant
Datasheet
LT1121IST-3.3#PBF Datasheet
Quick Jump:
Technical Specifications
Analog Devices LT1121IST-3.3#PBF Linear Controllers technical specifications.
General
Series
LT1121
RoHS
Yes
Package / Case
TO-261-4, TO-261AA
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 125°C
Lifecycle Status
Active
Output Type
Fixed
Max Input Voltage
30V
Current Supply Max
14 mA
Output Current
150mA
Alternate Parts Comparison (LT1121IST-3.3#PBF vs LT3088HST#TRPBF vs LT3080IST#TRPBF vs LT3080IST#PBF)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Package / Case | TO-261-4, TO-261AA | TO-261-4, TO-261AA | TO-261-4, TO-261AA | TO-261-4, TO-261AA |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 150°C | -40°C ~ 125°C | -40°C ~ 125°C |
| Current Supply Max | 14 mA | 2 mA | 30 mA | 30 mA |
| Max Input Voltage | 30V | 36V | 36V | 36V |
| Number of Regulators | 1 | 1 | 1 | 1 |
| Output Configuration | Positive | Positive | Positive | Positive |
| Output Current | 150mA | 800mA | 1.1A | 1.1A |
| Output Type | Fixed | Adjustable | Adjustable | Adjustable |
| Output Voltage | 3.3V | 0V | 0V | 0V |
| Protection Features | Over Temperature, Reverse Polarity | Over Current, Over Temperature, Reverse Polarity, Short Circuit | Over Current, Over Temperature, Short Circuit | Over Current, Over Temperature, Short Circuit |
| PSRR | 58dB (120Hz) | 90dB ~ 20dB (120Hz ~ 1MHz) | 75db ~ 20dB (120Hz ~ 1MHz) | 75db ~ 20dB (120Hz ~ 1MHz) |
| Action |
Cross Reference
Manufacturer-stated alternates from official cross-reference tools. These are not a guaranteed pin-compatible drop-in. Qualify package, pinout, and electrical limits against the datasheet before a board change. See cross-reference vs drop-in compatible .
Suggested replacements
NCV8664CST33T3GonsemiSimilaronsemi
Pin YesPkg YesElec Mixed
IC REG LINEAR 3.3V 150MA SOT223
More Parts in Voltage Regulators - Linear
Browse additional parts from the same category, grouped by series, package type, and manufacturer. These are catalog suggestions — not verified pin-compatible alternates.
LT3088HST#TRPBFAnalog DevicesLinear Voltage Regulator IC Positive Adjustable 1 Output 800mA SOT-223-3
LT1963AEST-2.5#TRPBFAnalog DevicesLinear Voltage Regulator IC Positive Fixed 1 Output 1.5A SOT-223-3