LDL212PU18R STMicroelectronics Integrated Circuit (Small Outline No-lead) In Stock
The LDL212PU18R is a high-PSRR, low-dropout linear voltage regulator from STMicroelectronics with a fixed 1.8 V output, 2.5 V to 18 V input range, and only 0.7 V typical dropout voltage in a compact 6-pin WSON package. It delivers excellent line and load regulation for noise-sensitive RF and mixed-signal applications.
- Manufacturer
- STMicroelectronics
- Package
- Small Outline No-lead
- Pin Count
- 7
- Lifecycle
- ACTIVE
- Datasheet
- LDL212PU18R Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LDL212PU18R?
- High PSRR for clean supply rails in RF and audio circuits
- Low 0.7 V typical dropout voltage enabling efficient regulation at narrow input-output differentials
- Wide input voltage range from 2.5 V to 18 V (absolute max 20 V)
- Ultra-compact 6-pin WSON (S-PDSO-N6) package for space-constrained designs
- Excellent line regulation (max 0.0027%) and load regulation (max 0.011%) for stable output
What is LDL212PU18R used for?
The LDL212PU18R is used to power sensitive analog and RF front-ends, microcontroller I/O rails, and sensor supply lines in IoT devices, wearables, and portable instrumentation where supply noise must be minimized. Its high PSRR and low dropout make it an effective post-regulator downstream of switching converters in mixed-signal boards.
What are the specifications of LDL212PU18R?
| YTEOL | 9.03 |
| Adjustability | FIXED |
| Dropout Voltage1-Nom | 0.7V |
| Input Voltage Absolute-Max | 20V |
| Input Voltage-Max | 18V |
| Input Voltage-Min | 2.5V |
| JESD-30 Code | S-PDSO-N6 |
| Line Regulation-Max | 0.002736% |
| Load Regulation-Max | 0.01071% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 1.2A |
| Output Voltage1-Max | 1.854V |
| Output Voltage1-Min | 1.746V |
| Output Voltage1-Nom | 1.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC6,.11,37 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Packing Method | TR, 13 INCH |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Voltage Tolerance-Max | 3% |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Mainland China |
Where can I find the LDL212PU18R datasheet?
LDL212PU18R Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for LDL212PU18R?
Compatible alternatives and drop-in replacements for LDL212PU18R:
Frequently Asked Questions
What is the dropout voltage of LDL212PU18R and how does it affect minimum input voltage requirements?
LDL212PU18R has a typical dropout voltage of 0.7 V. For its fixed 1.8 V output, the minimum input voltage must exceed 2.5 V, which aligns with the device's specified lower input bound, ensuring continuous regulation even when the upstream supply sags close to the output rail.
How does LDL212PU18R's PSRR performance benefit noise-sensitive RF receiver designs powered from a shared 5 V bus?
The LDL212PU18R provides high power-supply rejection ratio across audio and RF frequency bands, attenuating switching noise from a 5 V input down to the clean 1.8 V rail. This makes it suitable as a local post-regulator for LNA and ADC supply pins where even millivolt ripple can degrade sensitivity by several dB.
Is LDL212PU18R rated for industrial temperature ranges, and what MSL level applies to its WSON package?
The LDL212PU18R operates across a standard industrial temperature range of -40 °C to +125 °C. The 6-pin WSON package carries an MSL rating consistent with ST's WSON series, making it suitable for reflow assembly in both consumer and industrial production environments with controlled moisture-sensitive handling.
How does LDL212PU18R compare to LD3985 in dropout voltage for 1.8 V rail generation from a 2.5 V supply?
Both regulators target low-dropout 1.8 V rail generation, but LDL212PU18R specifies a 0.7 V dropout, requiring a minimum 2.5 V input. If the upstream supply is tightly constrained at 2.5 V, the LDL212PU18R operates at its lower boundary, while alternatives with sub-200 mV dropout could offer more margin in single-cell Li-Ion designs.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
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