ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC REG LINEAR 1.8V 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)：1.8V
- 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：-
Download product information
Overview
The LDK120M18R is a positive fixed linear voltage regulator from STMicroelectronics, delivering a nominal output of 1.8V with a maximum load current of 200mA. It operates within an input voltage range of 1.9V to 5.5V and features a typical dropout voltage of 300mV at full load. The device exhibits low quiescent current of 50µA and very low noise characteristics. Protection mechanisms include overcurrent limiting and thermal shutdown. It is housed in a compact SOT-23-5 package suitable for surface-mount applications.
Feature Summary
- Very low noise performance for sensitive analog circuits
- Low quiescent current consumption for battery efficiency
- Integrated overcurrent and thermal protection
Applications
- Portable consumer electronics
- Battery-powered devices
- RF and sensor power supplies
Procurement Notes
Verify the specific suffix 'M18R' to confirm the 1.8V fixed output voltage and tape-and-reel packaging configuration. Ensure compatibility with the SOT-23-5 footprint during PCB design. Confirm RoHS compliance status if required by your manufacturing standards. Cross-reference the manufacturer part number against official distributor catalogs to avoid counterfeit components.
Selection Notes
Select this component when a stable 1.8V rail is required with minimal noise interference. It is suitable for applications where input voltages are close to the output level, leveraging its low dropout characteristic. Consider the 200mA current limit for load requirements. The SOT-23-5 package offers space savings compared to larger regulators.
Part Context
This part belongs to the LDK series of low-dropout regulators designed for high-performance audio and RF applications. The LDK120 variant specifically targets low-noise requirements while maintaining efficient power usage. It complements other LDK models offering different output voltages or current capabilities within the same family.
Replacement Considerations
Check for LDK120 variants with different output voltages if 1.8V is not required. Verify pin-out compatibility with alternative LDOs in the SOT-23-5 package before substitution.
