LTC3129EMSE-1#PBF Analog Devices Power Supply (Small Outline Packages) In Stock
The LTC3129EMSE-1#PBF is a 15 V, 200 mA synchronous buck-boost DC-DC converter from Analog Devices with an ultralow 1 µA quiescent current and 1.92 V to 15 V input range. It maintains regulated output across buck, boost, and pass-through modes for seamless operation during battery discharge. Available in a compact MSOP-10E package suited for portable, battery-powered IoT and wearable applications.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- LTC3129EMSE-1#PBF Datasheet PDF
- Category
- Power Supply
- Price
- From $4.0700(MOQ 1)
- Temp Range
- ?°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1 µA quiescent current for maximum efficiency in sleep-mode and light-load IoT designs
- 1.92 V to 15 V input voltage range covers single-cell Li-Ion through multi-cell battery stacks
- 200 mA output current in synchronous buck-boost topology for consistent regulated output
- PWM current-mode control ensures stable response during mode transitions
- Fixed output options of 3.3 V, 5 V, 12 V, and others eliminate external feedback resistors
- Compact MSOP-10E package for ultra-small portable board designs
Applications
The LTC3129EMSE-1#PBF is ideal for IoT sensor nodes, wireless modules, and wearable devices that operate from a single-cell Li-Ion battery and must maintain a regulated 3.3 V or 5 V output as the cell discharges from 4.2 V to below 3 V. Its 1 µA quiescent current extends battery run-time dramatically in sleep-dominant duty cycles. The device also suits energy-harvesting applications and portable medical instruments requiring seamless buck-to-boost mode transitions without output glitches.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1667 |
| YTEOL | 10 |
| Additional Feature | OUTPUT 3.3, 4.1, 5, 6.9, 8.2, 12. 15 VOLTS ARE AVAILABLE; CURRENT MODE IS ALSO AVAILABLE |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 15V |
| Input Voltage-Min | 1.92V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 0.68A |
| Output Voltage-Max | 2.575V |
| Output Voltage-Min | 2.425V |
| Output Voltage-Nom | 2.5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES |
| Switcher Configuration | BUCK-BOOST |
| Switching Frequency-Max | 1400kHz |
| Technology | CMOS |
| Temperature Grade | OTHER |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| 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 | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the 1 µA quiescent current of LTC3129EMSE-1#PBF extend battery life in sleep-dominant IoT designs?
With only 1 µA quiescent current draw, the LTC3129EMSE-1#PBF dissipates just 3.3 µW from a 3.3 V output rail when the system is in deep sleep, compared to typical switchers drawing 50-100 µA. On a 1000 mAh battery in a sensor node that sleeps 99% of the time, this difference can extend battery life from weeks to years.
What input voltage range does LTC3129EMSE-1#PBF support, and how does its buck-boost topology handle Li-Ion battery discharge?
The LTC3129EMSE-1#PBF operates from 1.92 V to 15 V input, seamlessly transitioning between buck, pass-through, and boost modes as a Li-Ion cell discharges from 4.2 V through 3.3 V to below 2 V. This continuous regulation to 200 mA output with no mode-transition glitches makes it ideal for portable devices that must operate reliably through the entire battery discharge curve.
Which fixed output voltage options are available for LTC3129EMSE-1#PBF, and when would a designer choose 5 V over 3.3 V?
LTC3129EMSE-1#PBF is available in fixed 3.3 V, 4.1 V, 5 V, 6.9 V, 8.2 V, 12 V, and 15 V variants. A designer chooses the 5 V variant when powering USB peripheral interfaces, RS-232 transceivers, or analog sensor front-ends that require a 5 V rail, while the 3.3 V variant suits low-power microcontrollers, Bluetooth modules, and LoRa radios that natively operate from 3.3 V.
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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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| 1+ | $4.6656 | $4.67 |
| 1000+ | $4.0700 | $4070.00 |
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