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Product Detailed Parameters
- Description：IC REG LIN 1.8V 200MA 4-STSTAMP
- 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)：-
- Current - Output：200mA
- Current - Quiescent (Iq)：40 µA
- Current - Supply (Max)：-
- PSRR：80dB ~ 55dB (1kHz ~ 100kHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature, Soft Start
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：4-XFQFN
- Supplier Device Package：4-STSTAMP™ (0.47x0.47)
- Grade：-
- Qualification：-
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Overview
The LDBL20D-18R is a fixed-output linear low-dropout regulator manufactured by STMicroelectronics. It provides a fixed output voltage of 1.8V with a maximum continuous output current of 200mA. The device operates within an input voltage range of 1.5V to 5.5V and features a typical dropout voltage of 200mV at full load. Quiescent current is specified at 40µA, while shutdown mode consumption remains below 0.2µA. Power supply rejection ratio (PSRR) reaches 80dB at 1kHz and 55dB at 100kHz. The component is housed in a compact 4-STSTAMP package measuring 0.47x0.47mm and supports operation from -40°C to 125°C junction temperature.
Feature Summary
- Ultra-low dropout voltage capability for efficient power management
- Logic-controlled electronic shutdown function for extended battery life
- Integrated soft-start circuitry to limit inrush current
- Internal constant current and thermal protection mechanisms
Applications
- Low-power battery-operated portable devices
- Handheld consumer electronics requiring space-saving regulators
- Point-of-load regulation in compact mobile systems
Procurement Notes
Verify the specific suffix 'D-18R' against official STMicroelectronics documentation to confirm the fixed 1.8V output voltage and tape-and-reel packaging configuration. Ensure compatibility with the required 4-STSTAMP footprint during PCB layout. Confirm RoHS3 compliance status if restricted substance regulations apply to your manufacturing process. Cross-reference the manufacturer part number with authorized distributor catalogs to validate current availability and standard lead times before finalizing procurement plans.
Selection Notes
Select this component when a fixed 1.8V rail is required with minimal board space constraints. The ultra-small 4-STSTAMP package suits designs where footprint area is critical. Verify that the application load does not exceed 200mA and that the input voltage stays within the 1.5V to 5.5V operational window. Consider the quiescent current specifications for battery-powered applications requiring long standby durations.
Part Context
This device belongs to the LDBL20 family of ultra-tiny low-dropout regulators designed for high accuracy and space efficiency. The family utilizes the proprietary STSTAMP™ packaging technology to maximize board real estate savings. These regulators are engineered for modern portable electronics that demand high performance in minimal physical dimensions while maintaining stable output under varying load conditions.
Replacement Considerations
Consult official STMicroelectronics substitution guides for verified alternatives within the LDBL20 series or compatible LDO families. Do not assume functional equivalence with other manufacturers' components without verifying pinout, electrical parameters, and thermal characteristics.
