LT3042MPMSE#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
LT3042MPMSE#PBF is an ultralow-noise, ultrahigh-PSRR adjustable RF LDO linear regulator delivering 200 mA output from up to 20 V input with only 0.22 V typical dropout. Achieves 0.8 µVRMS noise and 79 dB PSRR at 1 MHz for sensitive RF and precision analog circuits. Available from stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 10
- Lifecycle
- ACTIVE
- Datasheet
- LT3042MPMSE#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $7.9400(MOQ 10)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LT3042MPMSE#PBF?
- 0.8 µVRMS output noise from 10 Hz to 100 kHz — lowest in class for powering PLL VCOs, ADCs, and RF front-ends without spectral contamination
- 79 dB PSRR at 1 MHz and 80 dB at 100 kHz rejecting switching regulator ripple directly to the RF section
- 200 mA output current with 0.22 V typical dropout (0.3 V max) enabling high-efficiency operation from 3.3 V to 5 V rails
- Adjustable output from 0 V to 15 V via a single external resistor supporting a wide range of RF and analog supply rails
- Parallel-able architecture: multiple LT3042 units can share load current while further halving combined output noise per device added
What is LT3042MPMSE#PBF used for?
LT3042MPMSE#PBF is the preferred LDO for RF synthesizers, VCO supply rails, and low-phase-noise oscillators where switching regulator ripple above 100 kHz would degrade spectral purity or phase noise floor below -150 dBc/Hz. Its parallel-able architecture allows two or more units to share load current in high-current RF PA bias networks while each device contributes its low 0.8 µVRMS noise in quadrature, reducing total noise even further. Precision DAC and ADC supply networks, test and measurement instruments, and medical imaging analog front-ends also benefit from its 0.003% load regulation and ultraclean output.
What are the specifications of LT3042MPMSE#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1664 |
| YTEOL | 10 |
| Adjustability | ADJUSTABLE |
| Dropout Voltage1-Max | 0.3V |
| Dropout Voltage1-Nom | 0.22V |
| JESD-30 Code | S-PDSO-G10 |
| JESD-609 Code | e3 |
| Load Regulation-Max(%) | 0.003% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 150°C |
| Operating Temperature TJ-Min | -55 °C |
| Output Current1-Max | 0.2A |
| Output Voltage1-Max | 15V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Regulator Type | ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Where can I find the LT3042MPMSE#PBF datasheet?
LT3042MPMSE#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT3042MPMSE#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How low is the output noise of LT3042MPMSE#PBF and why does it matter for RF applications?
LT3042MPMSE#PBF delivers just 0.8 µVRMS broadband output noise from 10 Hz to 100 kHz, which is critical for VCO and PLL supply rails where power supply noise directly adds to the oscillator's phase noise floor, degrading adjacent-channel interference rejection in cellular and Wi-Fi transceivers.
What PSRR does LT3042MPMSE#PBF achieve at switching regulator frequencies?
The device achieves 79 dB PSRR at 1 MHz and over 80 dB at 100 kHz, effectively attenuating a 10 mV switching ripple from a 1 MHz buck regulator down to below 35 µV at the output, making it practical to power sensitive RF ICs directly from noisy switch-mode supplies without additional LC filtering stages.
Can multiple LT3042MPMSE#PBF devices share current, and what is the noise benefit?
Yes, LT3042MPMSE#PBF units can be paralleled by connecting their outputs and programming resistors together; with 2 devices sharing a 400 mA load, combined output noise drops to 0.57 µVRMS (1/√2 of a single device's 0.8 µVRMS), enabling ultra-quiet power for high-dynamic-range ADCs sampling at 500 MHz and above.
What is the dropout voltage of LT3042MPMSE#PBF and how does it affect headroom design?
The typical dropout voltage is 0.22 V (0.3 V maximum at 200 mA), allowing a 3.3 V input rail to regulate a 3.0 V output with only 300 mV of headroom margin, which preserves power budget in 5G small cell radios and portable spectrum analyzers running from compact LiPo batteries.
In which package does LT3042MPMSE#PBF come and how does it compare to the E-pad MSOP package?
LT3042MPMSE#PBF uses a 10-lead MSOP package (PDSO-G10, approximately 3 x 3 mm) with an exposed thermal pad for improved heat dissipation at 200 mA, whereas the standard non-pad MSOP variant requires external copper pour for the same thermal performance, making the exposed-pad version preferable for compact RF module designs above 100 mA.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 10+ | $11.2640 | $112.64 |
| 19+ | $10.5200 | $199.88 |
| 100+ | $8.6250 | $862.50 |
| 1000+ | $7.9400 | $7940.00 |
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