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Product Detailed Parameters
- Description：IC REG LINEAR 1V 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)：1V
- 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 LDK120M10R is a fixed-output linear low-dropout regulator (LDO) from STMicroelectronics, delivering a constant 1V output at up to 200mA. It operates within an input voltage range of 1.9V to 5.5V with a maximum dropout voltage of 0.3V at full load. The device features a typical quiescent current of 60µA and supports ceramic capacitors for stability. Integrated protections include overcurrent limiting and thermal shutdown. It is housed in a SOT-23-5 surface-mount package and rated for industrial temperatures from -40°C to 125°C.
Feature Summary
- Ultra-low dropout performance ensures efficient regulation with minimal voltage loss under load.
- Logic-controlled enable pin allows precise power management by switching the device into a deep shutdown mode.
- Robust internal protection mechanisms safeguard against short circuits and excessive heat generation.
Applications
- Low-power battery-operated portable electronics
- Always-on automotive body and interior functions
- Industrial applications requiring stable DC rails
Procurement Notes
Verify that the specific suffix 'M10R' corresponds to the fixed 1V output variant when sourcing replacements. Confirm the package designation matches SOT-23-5 requirements for your PCB layout. Ensure compatibility with ceramic output capacitors as specified in the official datasheet to maintain loop stability during operation.
Selection Notes
Select this component when a fixed 1V rail is required with high efficiency near the input voltage limit. The low quiescent current makes it suitable for energy-constrained designs. Verify that the 200mA output capability meets the peak load demands of the target circuit without exceeding thermal limits in the chosen enclosure environment.
Part Context
This part belongs to the LDK120 family of ultra-low dropout regulators designed for harsh environments. The series offers various fixed and adjustable voltage options with currents up to 300mA. These devices are engineered for automotive and industrial sectors, emphasizing reliability, low noise, and extended temperature ranges across multiple compact package formats.
Replacement Considerations
Direct substitutes within the same family include other LDK120 variants with different fixed output voltages or adjustable versions. Cross-model replacement requires verifying identical pinouts, current ratings, and dropout characteristics to ensure functional equivalence in the existing circuit design.
