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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 LE33CZ is a very low-dropout (LDO) linear voltage regulator from STMicroelectronics, providing a fixed positive output of 3.3V at up to 100mA. It features an inhibit function and operates within an input range of 5.3V to 18V. The device exhibits a typical dropout voltage of 200mV and ultra-low quiescent current of 50nA. It is housed in a TO-92-3 through-hole package and supports operating temperatures from -40°C to +125°C.
Feature Summary
- Integrated inhibit control for power management
- Very low dropout voltage operation
- Ultra-low static current consumption
Applications
- Battery-powered portable electronics
- Automotive systems requiring robust regulation
- General-purpose linear voltage regulation
Procurement Notes
Verify the specific suffix (e.g., TR, AP) against the datasheet, as packaging and availability vary. Confirm RoHS compliance status directly with the manufacturer or authorized distributors. Check for obsolete status notifications, as some variants may be discontinued. Ensure the TO-92-3 package matches the PCB footprint requirements before ordering.
Selection Notes
Select this component when a fixed 3.3V output is required with minimal voltage drop across the regulator. The TO-92-3 package suits through-hole designs. Consider the 100mA current limit and 5.3V minimum input voltage. The inhibit feature allows for system-level power control. Verify thermal dissipation capabilities for the intended load current.
Part Context
This part belongs to the LE series of very low-dropout regulators available in SO-8 and TO-92 packages. The series offers various fixed output voltages. The LE33CZ specifically targets applications needing stable 3.3V regulation with low power consumption. It is designed for automotive and industrial environments due to its wide temperature range.
Replacement Considerations
LE33CZ-AP is a documented variant with identical electrical specifications but potentially different packaging or trailing zeros. LE33CD-TR is a similar LDO but differs in package (SOIC-8) and maximum output current (150mA). Verify pin compatibility and thermal performance when substituting.
