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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 100MA TO92-3
- Series：-
- Mfr：STMicroelectronics
- Package：Bulk
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：18V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.5V @ 100mA
- Current - Output：100mA
- Current - Quiescent (Iq)：1 mA
- Current - Supply (Max)：3 mA
- PSRR：80dB ~ 60dB (120Hz ~ 10kHz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA)
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The LE33ABZ is a fixed positive linear voltage regulator from the L78L series, manufactured by STMicroelectronics. It provides a stable 3.3 V output with a maximum load current of 100 mA. The device operates within an input voltage range typically up to 35 V and maintains regulation over a junction temperature range of -40 °C to +125 °C. Packaged in the TO-92 (TO-226AA) three-pin case, it integrates internal thermal overload protection and short-circuit current limiting to ensure reliable operation under fault conditions without requiring external components for basic functionality.
Feature Summary
- Fixed 3.3 V output voltage
- Internal thermal overload protection
- Short-circuit current limiting
Applications
- Portable battery-powered equipment
- General-purpose power supplies
- Negative voltage regulators
Procurement Notes
Verify the specific suffix 'ABZ' against the official STMicroelectronics datasheet to confirm package type and temperature grade. Ensure the ordering code matches the exact component requirements for your design. Cross-reference with authorized distributors to validate authenticity and traceability before procurement.
Selection Notes
Select this component when a low-cost, fixed 3.3 V supply is needed for currents up to 100 mA. Consider the thermal dissipation capabilities of the TO-92 package relative to the input-output voltage differential. Verify that the input voltage does not exceed the maximum rated limit to prevent device damage.
Part Context
This part belongs to the L78Lxx family of three-terminal positive regulators. These devices are widely used as local zener diode replacements in power supplies, offering improved ripple rejection and regulation compared to discrete solutions. They serve as foundational components in simple voltage regulation circuits.
