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Product Detailed Parameters
- Description：IC REG LINEAR 1.5V 200MA 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)：5.5V
- Voltage - Output (Min/Fixed)：1.5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.3V @ 200mA
- Current - Output：200mA
- Current - Quiescent (Iq)：60 µA
- Current - Supply (Max)：100 µA
- PSRR：55dB (120Hz ~ 10kHz)
- 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 LDK120M15R is a fixed-output low-dropout linear regulator manufactured by STMicroelectronics. It provides a fixed output voltage of 1.5V with a maximum continuous output current of 200mA. The device operates within an input voltage range of 1.9V to 5.5V and features a typical dropout voltage of 100mV at 100mA load. Quiescent current is specified at a maximum of 100µA, reducing to less than 1µA in shutdown mode. It includes enable logic control, overcurrent protection, and thermal shutdown. The component is housed in a SOT-23-5 package and supports operation from -40°C to +125°C.
Feature Summary
- Ultra-low dropout performance suitable for battery-powered applications
- Logic-controlled enable pin for power management and shutdown modes
- Integrated overcurrent and thermal protection mechanisms
Applications
- Low-power portable electronic devices
- Battery-operated sensor nodes
- RF circuit biasing requiring low noise
Procurement Notes
Verify the specific suffix M15R confirms the 1.5V fixed output variant. Confirm the SOT-23-5 package designation matches the target PCB footprint. Ensure compatibility with ceramic output capacitors as specified in the datasheet. Check RoHS compliance status for environmental regulations. Validate lead times and availability directly with authorized distributors.
Selection Notes
Select this component when a stable 1.5V rail is required from inputs up to 5.5V. Consider the low quiescent current for extended battery life requirements. Verify that the 200mA current capability meets the load demands. Ensure the SOT-23-5 package fits the assembly constraints. Evaluate thermal dissipation needs based on the voltage drop and load current.
Part Context
This part belongs to the LDK120 series of low-dropout regulators designed for ultra-low noise and low quiescent current applications. The series offers various fixed and adjustable output voltages. It is engineered for high performance in space-constrained designs using small packages like SOT-23-5 and DFN6.
Replacement Considerations
Check for other LDK120 variants with different output voltages if 1.5V is not required. Verify pin-to-pin compatibility with alternative LDOs offering similar current ratings and package types.
