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Product Detailed Parameters
- Description：IC REG LINEAR 5V 100MA TO92-3
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：18V
- Voltage - Output (Min/Fixed)：5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.5V @ 100mA
- Current - Output：100mA
- Current - Quiescent (Iq)：1 mA
- Current - Supply (Max)：3 mA
- PSRR：76dB ~ 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 LE50CZ-TR is a fixed-output low-dropout (LDO) linear voltage regulator manufactured by STMicroelectronics. It provides a stable 5.0V output with a maximum current capability of 100mA. The device features a typical dropout voltage of 0.2V at full load, ensuring efficient operation under varying input conditions. It incorporates an inhibit function for power management control. The component operates within a junction temperature range of -40°C to +125°C and is housed in a compact SOT-23 surface-mount package, suitable for space-constrained portable electronics applications.
Feature Summary
- Fixed 5.0V output voltage regulation
- Very low dropout voltage for high efficiency
- Integrated inhibit control pin
- High operating temperature range
Applications
- Portable battery-powered devices
- Consumer electronics power supplies
- Embedded system voltage regulation
- Communication equipment power management
Procurement Notes
Verify the exact part marking and datasheet revision against official STMicroelectronics documentation before integration. Confirm that the SOT-23 package orientation matches your PCB footprint design. Ensure input voltage limits are respected to prevent device damage. Cross-reference the inhibit logic requirements with your system control signals. Validate thermal performance under maximum load conditions in your specific enclosure environment.
Selection Notes
Choose this component when a stable 5V rail is required from higher input voltages with minimal headroom. The low quiescent current makes it suitable for battery-operated systems where standby power consumption is critical. The integrated inhibit feature allows for system-level power sequencing or shutdown control. Consider the 100mA output limit when sizing for load currents; select higher-current variants if peak demands exceed this threshold.
Part Context
This regulator belongs to the LE series of low-dropout voltage regulators from STMicroelectronics. These components are designed for applications requiring simple, reliable voltage regulation without external feedback networks. The series offers various fixed output voltages and current ratings to suit different power requirements. The LE50CZ-TR specifically targets cost-sensitive and space-constrained designs needing precise 5V regulation.
Replacement Considerations
Direct substitutes include other STMicroelectronics LDOs with identical pinouts and electrical characteristics, such as the LE50ABZ or LE50BD variants, provided they meet the same current and voltage specifications. Verify compatibility with existing PCB layouts and thermal constraints when swapping between package types or current ratings.
