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 LIN 1.8V 200MA SOT-323-5
- 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：5-TSSOP, SC-70-5, SOT-353
- Supplier Device Package：SOT-323-5
- Grade：-
- Qualification：-
Download product information
Overview
The LDK120C18R is a fixed-output linear low-dropout regulator (LDO) manufactured by STMicroelectronics, delivering a guaranteed output current of 200 mA. It provides a fixed output voltage of 1.8 V with an input supply range spanning from 1.9 V to 5.5 V. The device features a typical dropout voltage of 100 mV at a 100 mA load and maintains stability using only a 1 μF ceramic capacitor on the output. Key electrical specifications include a maximum quiescent current of 100 μA and a shutdown mode consumption lower than 1 μA when enabled via logic control. It incorporates internal overcurrent and thermal protection mechanisms.
Feature Summary
- Ultra-low dropout voltage performance for efficient power management in battery-operated systems
- Logic-controlled electronic shutdown function enabling deep sleep modes with minimal current drain
- Integrated short-circuit constant current limiting and thermal protection for enhanced reliability
Applications
- Low-power battery-powered consumer electronics
- Portable devices requiring stable voltage regulation with minimal noise
- Always-on automotive body and interior functions
Procurement Notes
Verify the specific suffix 'C18R' against official STMicroelectronics documentation to confirm the 1.8 V fixed output voltage and SOT-323-5 packaging configuration. Ensure compatibility with your PCB footprint and verify RoHS compliance status through the manufacturer's latest datasheet before finalizing procurement orders.
Selection Notes
Select this component when a fixed 1.8 V rail is required with high efficiency under light loads. The low quiescent current makes it suitable for energy-sensitive designs. Confirm that the application environment stays within the -40°C to 125°C operating temperature range and that the input voltage does not exceed the 5.5 V maximum rating.
Part Context
This part belongs to the LDK120 series of ultra-low dropout voltage regulators designed for low-noise and low-power applications. The series offers various fixed output voltages and adjustable versions, packaged in compact formats like SOT-23-5L, SOT-323-5L, and DFN6 to support space-constrained portable and industrial designs.
Replacement Considerations
Direct substitutes may include other 200 mA LDOs with similar 1.8 V output and SOT-323-5 packages. Verify pinout compatibility and electrical parameters such as dropout voltage and PSRR against the original specification sheet.
