L78L33ABD STMicroelectronics Integrated Circuit (Small Outline Packages) In Stock
The L78L33ABD is a fixed 3.3 V linear voltage regulator delivering up to 100 mA output current in a compact 8-pin SOIC package. It accepts input voltages from 5.3 V to 20 V and features internal current limiting and thermal shutdown protection. Available from stock worldwide with same-day shipping.
- Manufacturer
- STMicroelectronics
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- L78L33ABD Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.0588(MOQ 3145)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 3.3 V output with ±2% accuracy across line and load variations
- 100 mA output current capacity with internal current limiting and thermal overload protection
- Wide input voltage range of 5.3 V to 20 V with only 1.7 V typical dropout voltage
Applications
The L78L33ABD is widely used to supply stable 3.3 V rails in battery-powered IoT devices, sensor modules, and embedded microcontroller boards where board space is limited. It serves as a post-regulator in multi-rail power architectures and is ideal for powering low-current logic circuits, reference circuits, and wireless communication modules requiring a clean, regulated supply.
Specifications
| YTEOL | 0 |
| Adjustability | FIXED |
| Dropout Voltage1-Nom | 1.7V |
| Input Voltage Absolute-Max | 30V |
| Input Voltage-Max | 20V |
| Input Voltage-Min | 5.3V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Line Regulation-Max | 0.15% |
| Load Regulation-Max | 0.06% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.1A |
| Output Voltage1-Max | 3.465V |
| Output Voltage1-Min | 3.135V |
| Output Voltage1-Nom | 3.3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR, 13 INCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT STANDARD REGULATOR |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Terminal Finish | NICKEL PALLADIUM GOLD SILVER |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Voltage Tolerance-Max | 5% |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum output current the L78L33ABD can supply in a continuous operating condition?
The L78L33ABD is rated for a maximum continuous output current of 100 mA. This makes it suitable for powering low-power microcontrollers, sensors, and logic circuits that draw modest current from a regulated 3.3 V rail.
How wide is the input voltage range of the L78L33ABD and what is its dropout voltage?
The L78L33ABD accepts input voltages between 5.3 V and 20 V, with a maximum absolute rating of 30 V. Its typical dropout voltage is 1.7 V, meaning the input must exceed 5 V to maintain a regulated 3.3 V output under full 100 mA load.
In which applications is the L78L33ABD a better fit than a switching regulator?
The L78L33ABD suits noise-sensitive analog designs, RF front-end circuits, and sensor interfaces where low output ripple and minimal EMI are critical. At currents below 100 mA with input-output differentials under 5 V, the thermal dissipation remains manageable and the simplicity of the 8-pin SOIC design reduces BOM cost and PCB area compared to a switching converter.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 3145+ | $0.0636 | $200.02 |
| 4085+ | $0.0612 | $250.00 |
| 5105+ | $0.0588 | $300.17 |
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