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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 100MA TO92-3
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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) Formed Leads
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The LE33CZ-TR is a low-dropout linear voltage regulator manufactured by STMicroelectronics, designed to provide a fixed positive output of 3.3 V with a maximum continuous load current of 100 mA. It operates within an input voltage range from 3.7 V to 18 V and maintains a typical dropout voltage of 200 mV at full load. The device features a very low quiescent current of 50 nA and ensures high accuracy with a voltage regulation tolerance of 2%. It is housed in a TO-92-3 through-hole package and supports operation across an extended temperature range from -40 °C to +125 °C.
Feature Summary
- Provides a stable fixed 3.3 V output suitable for powering sensitive digital logic and analog circuits.
- Features ultra-low static current consumption to minimize power loss in battery-operated applications.
- Delivers regulated power with minimal voltage drop between input and output terminals under load.
Applications
- Powering microcontrollers and memory devices requiring a stable 3.3 V rail
- Battery-powered portable electronics where low quiescent current is critical
- General-purpose linear regulation in industrial control systems
Procurement Notes
Verify the specific suffix 'CZ' corresponds to the TO-92-3 through-hole package configuration rather than surface-mount variants. Confirm RoHS compliance status via the manufacturer's official documentation before integration. Ensure the ordering code matches the exact traceability requirements for your production batch.
Selection Notes
Select this component when a through-hole mounting solution is required for 3.3 V regulation. The TO-92-3 package offers ease of prototyping and manual assembly compared to surface-mount options. Consider the 100 mA current limit and 18 V maximum input voltage when designing the power stage to ensure adequate headroom and thermal management.
Part Context
This part belongs to the LE series of low-dropout regulators from STMicroelectronics. The series includes various output voltages and package types, such as the SOIC-8 variant (LE33CD). The LE33CZ-TR specifically addresses applications needing robust through-hole regulation with high accuracy and low standby current consumption.
Replacement Considerations
The LE33CD-TR serves as a functional equivalent offering identical electrical specifications but utilizes an SOIC-8 surface-mount package instead of the TO-92-3 form factor. Designers must account for footprint differences during substitution.
