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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 100MA 8-SOIC
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- 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：Enable
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The LE33ABD is a positive fixed linear voltage regulator manufactured by STMicroelectronics. It provides a stable 3.3V output with a maximum load current of 100mA. The device features a very low dropout voltage, enabling efficient operation even when the input-to-output differential is minimal. It includes an inhibit control pin for power management and offers protection against short circuits and thermal overload. The component is housed in an 8-SOIC surface-mount package.
Feature Summary
- Very low dropout voltage capability for efficient power conversion
- Integrated inhibit control pin for system power management
- Built-in thermal overload and short-circuit protection
Applications
- Battery-powered portable electronic devices
- Low noise analog circuit power supplies
- Embedded systems requiring stable 3.3V logic levels
Procurement Notes
Verify the complete part number including suffixes such as TR for tape-and-reel packaging configurations. Confirm the specific package variant matches the design requirements. Ensure compatibility with the intended input voltage range and thermal dissipation constraints before finalizing procurement decisions.
Selection Notes
Select this component for applications requiring a simple, fixed 3.3V supply with minimal external components. Consider the 100mA current limit and dropout characteristics relative to the minimum input voltage. Evaluate thermal performance based on the expected load current and ambient temperature conditions within the 8-SOIC package.
Part Context
This regulator belongs to STMicroelectronics' family of very low drop voltage regulators designed for efficiency and reliability. These devices are engineered to maintain regulation under varying load and line conditions while minimizing power loss. The series supports various output voltages and packages to suit diverse consumer and industrial electronics needs.
Replacement Considerations
Check for compatible equivalents from other manufacturers offering similar 3.3V, 100mA LDO specifications with inhibit functionality. Verify pinout compatibility and electrical parameter alignment to ensure seamless integration without redesigning the PCB layout.
