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Product Detailed Parameters
- Description：IC REG LINEAR 1.5V 150MA SOT23-5
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：16V
- Voltage - Output (Min/Fixed)：1.5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.575V @ 150mA
- Current - Output：150mA
- Current - Quiescent (Iq)：150 µA
- Current - Supply (Max)：4 mA
- PSRR：45dB (1kHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：SC-74A, SOT-753
- Supplier Device Package：SOT-23-5
- Grade：-
- Qualification：-
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Overview
The LD2985BM15R is a fixed-output low-dropout linear regulator from STMicroelectronics, providing a stable 1.5 V output with a maximum load current of 150 mA. It features an ultra-low dropout voltage and very low quiescent current, making it suitable for battery-powered systems. The device includes logic-controlled electronic shutdown via the inhibit pin, reducing standby consumption to less than 1 μA. Internal protections include current limiting and thermal shutdown. It operates within a temperature range of -40 °C to +125 °C and is housed in a compact SOT-23-5L package.
Feature Summary
- Ultra-low dropout voltage ensures efficient power regulation under varying load conditions.
- Logic-controlled electronic shutdown allows precise board-level power management.
- Internal current and thermal limit protections safeguard against operational faults.
Applications
- Battery-powered portable electronics
- Low noise analog circuits
- Personal digital assistants
Procurement Notes
Verify the specific suffix 'BM15R' confirms the 1.5 V fixed output variant. Ensure the component status is Active as per official documentation. Confirm RoHS compliance and packaging details match project requirements before procurement.
Selection Notes
Select this regulator for applications requiring a 1.5 V rail with minimal voltage drop. Consider its low quiescent current for extended battery life. Verify input voltage stays within the 2.5 V to 16 V range to ensure proper operation.
Part Context
This component belongs to the LD2985 family of low-dropout regulators designed for low-power applications. It shares architectural similarities with other members like the LD2985BM30R but differs in fixed output voltage. The family emphasizes efficiency and compact footprint for mobile devices.
Replacement Considerations
Public confirmed substitutes include LP2985IM5-1.5/NOPB from Texas Instruments. Verify pin compatibility and electrical specifications before substitution.
