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Product Detailed Parameters
- Description：IC REG LINEAR 1.25V 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)：1.25V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.5V @ 100mA
- Current - Output：100mA
- Current - Quiescent (Iq)：1 mA
- Current - Supply (Max)：3 mA
- PSRR：82dB ~ 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 LE12CZ is a positive fixed linear voltage regulator from the LE00 series, manufactured by STMicroelectronics. It provides a fixed output voltage of 1.25V with a maximum load current capability of 100mA. The device is housed in a TO-92-3 package and features a maximum dropout voltage of 0.5V at full load. Designed for low-power applications, it includes internal protection mechanisms against short circuits and thermal overload.
Feature Summary
- Fixed 1.25V output voltage suitable for low-voltage logic circuits
- High current capability of up to 100mA for driving small loads
- Low dropout characteristic ensures efficient regulation near input limits
- Integrated thermal overload and short-circuit protection for reliability
Applications
- Standby microprocessor control-unit systems
- Automotive battery-connected circuits
- Low-dropout power supply stages for portable devices
Procurement Notes
Verify component authenticity through authorized distributors as the LE12CZ is listed as no longer manufactured. Confirm RoHS compliance and REACH directive adherence for environmental standards. Check for tariff implications if shipping to the United States. Ensure the TO-92-3 package matches your PCB footprint requirements before ordering.
Selection Notes
Select this component when a stable 1.25V rail is required with moderate current demands. The TO-92-3 package is suitable for through-hole mounting in non-high-density designs. Consider the 0.5V dropout voltage when designing for minimum input-output differential. Verify that the 100mA limit meets the peak load requirements of the target application without exceeding thermal constraints.
Part Context
The LE12CZ belongs to the LE00 series of very low drop regulators offered by STMicroelectronics. This series is available in SO-8 and TO-92 packages with various output voltages. The LE00 series is engineered for efficiency in battery-powered and automotive applications where minimizing voltage loss across the regulator is critical for system longevity and performance.
Replacement Considerations
Publicly confirmed substitute part numbers are not explicitly documented in the provided source material. Engineers should consult official STMicroelectronics documentation or authorized distributor cross-reference tools to identify compatible equivalents from the same LE00 series or other manufacturers offering similar 1.25V/100mA TO-92 regulators.
