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Product Detailed Parameters
- Description：IC REG LINEAR 4.5V 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)：4.5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.5V @ 100mA
- Current - Output：100mA
- Current - Quiescent (Iq)：1 mA
- Current - Supply (Max)：3 mA
- PSRR：77dB ~ 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 LE45ABD is a Very Low Drop Voltage Regulator (LDO) manufactured by STMicroelectronics. It features an inhibit function and is designed for standby microprocessor control-unit systems, particularly in automotive applications. The device is engineered to be directly connected to a car battery or other power sources requiring stable voltage regulation with low dropout characteristics.
Feature Summary
- Very low drop voltage regulation capability
- Integrated inhibit function for power management
- Designed for direct connection to automotive battery systems
Applications
- Standby microprocessor control-unit systems
- Automotive electronic applications
- Battery-powered system voltage regulation
Procurement Notes
The LE45ABD is listed as obsolete and no longer manufactured by STMicroelectronics. Procurement should focus on verified surplus stock from authorized distributors or alternative replacement components. Verify component authenticity and storage conditions carefully due to its end-of-life status.
Selection Notes
Select this component only if legacy compatibility with existing automotive standby microprocessor designs is required. Consider the obsolete status when planning long-term supply chain stability. Evaluate alternatives based on similar LDO specifications and inhibit functionality requirements.
Part Context
This part belongs to STMicroelectronics' family of very low drop voltage regulators with inhibit functions. These regulators are typically used in applications requiring efficient power management and direct battery connectivity, such as automotive electronics and standby systems.
Replacement Considerations
LE45AB is a related variant within the same product family. Consult official documentation for pinout and specification comparisons when evaluating substitutes.
