LT3999EMSE#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
The LT3999EMSE#PBF is a push-pull DC/DC switching controller from Analog Devices operating from 2.7 V to 36 V input with up to 1 MHz switching frequency, housed in an MSOP-10 package. It drives external MOSFETs for isolated power conversion in telecom, industrial, and automotive applications. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 10
- Lifecycle
- ACTIVE
- Datasheet
- LT3999EMSE#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.0822(MOQ 1)
- Temp Range
- ?°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Push-pull switching controller with 1 MHz maximum frequency reduces transformer and capacitor size in isolated DC/DC designs
- Wide 2.7 V to 36 V input voltage range covers automotive, telecom, and industrial supply rails from a single device
- MSOP-10 package with compact footprint simplifies board-space-constrained isolated power supply layouts
Applications
The LT3999EMSE#PBF is designed for isolated push-pull DC/DC converters in telecom infrastructure, industrial process control, and automotive power conditioning systems. Its wide 2.7 V to 36 V input range and 1 MHz switching frequency allow transformer miniaturization while maintaining regulation across demanding supply variations. It is also well-suited for bias supply generation in motor drives and isolated data-acquisition front ends.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1664 |
| YTEOL | 10 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Input Voltage-Max | 36V |
| Input Voltage-Min | 2.7V |
| Input Voltage-Nom | 15V |
| JESD-30 Code | S-PDSO-G10 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 1.7A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Surface Mount | YES |
| Switcher Configuration | PUSH-PULL |
| Switching Frequency-Max | 1000kHz |
| Technology | BIPOLAR |
| Temperature Grade | OTHER |
| 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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LT3999EMSE#PBF:
suggested
suggested
suggested
Frequently Asked Questions
What input voltage range does the LT3999EMSE#PBF support and at what switching frequency?
The LT3999EMSE#PBF accepts an input voltage from 2.7 V to 36 V and can operate at switching frequencies up to 1 MHz, with a nominal input of 15 V. This combination allows the push-pull controller to drive a compact transformer for isolated DC/DC conversion across a wide range of automotive, telecom, and industrial supply rails without requiring separate power-path components.
For a 48 V telecom bus design, how should engineers adapt the LT3999EMSE#PBF to the 36 V input maximum?
Since the LT3999EMSE#PBF's maximum input is 36 V, a 48 V telecom bus requires a pre-regulator or resistive divider network to bring the supply within the 2.7 V to 36 V operating window before driving the push-pull stage. This is a common approach in -48 V telecom architectures where a front-end stage first conditions the rail, after which the LT3999EMSE#PBF handles isolated conversion at up to 1 MHz switching frequency.
How does the MSOP-10 package of LT3999EMSE#PBF compare to larger SOIC packages for isolated power supply density?
The MSOP-10 package occupies roughly 3 mm × 3 mm of PCB area, approximately 60% less than a standard SOIC-8 footprint, making it significantly more space-efficient for isolated push-pull power supplies where the transformer already consumes substantial board real estate. The LT3999EMSE#PBF achieves this density while supporting 2.7 V to 36 V inputs and 1 MHz operation, an advantage for battery-powered or dense rack-mount designs.
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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.
More from Analog Devices
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $4.2030 | $4.20 |
| 3+ | $3.5025 | $10.51 |
| 8+ | $3.0822 | $24.66 |
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