LT3579IUFD-1#PBF Analog Devices Integrated Circuit (Quad Flat No-Lead) In Stock
Analog Devices LT3579IUFD-1 is a multi-topology current-mode PWM switching regulator with 6 A output and 2.5 V to 16 V input range, housed in a compact 20-pin QFN package for flexible DC/DC power conversion in portable and industrial systems.
- Manufacturer
- Analog Devices
- Package
- Quad Flat No-Lead
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- LT3579IUFD-1#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $5.0500(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Multi-topology configuration supporting buck, boost, and inverting modes with 6 A output current from a single IC for design flexibility
- Current-mode PWM control with 2.5 V to 16 V input range enabling efficient power conversion from single-cell Li-Ion up to 12 V bus rails
- Compact 20-pin QFN package minimizing PCB footprint while supporting high-current switching regulator designs for space-constrained applications
Applications
The LT3579IUFD-1 is designed for portable consumer electronics, industrial handheld devices, and multi-rail power supply boards where a single IC must handle different conversion topologies from a 2.5 V to 16 V input. Its multi-configuration capability supports buck mode for stepping down from a 12 V rail, boost mode for generating higher voltages from a Li-Ion cell, and inverting mode for generating negative supply rails in audio or analog signal chains. The 6 A output current and current-mode PWM control make it suitable for demanding loads in test equipment, medical portables, and embedded computing modules.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1711 |
| YTEOL | 10 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 16V |
| Input Voltage-Min | 2.5V |
| Input Voltage-Nom | 5V |
| JESD-30 Code | R-PQCC-N20 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 9.4A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | CHIP CARRIER |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 2800kHz |
| Technology | BIPOLAR |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Quad Flat No-Lead |
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
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What converter topologies can the LT3579IUFD-1 implement and what advantages does this flexibility offer designers?
The LT3579IUFD-1 supports multiple switching regulator configurations including buck, boost, and inverting topologies from a single 20-pin QFN IC. This multi-topology capability allows engineers to standardize on one part number for different power conversion needs within the same product family, reducing SKU count and simplifying procurement for boards requiring both step-down and step-up power rails.
What input voltage range does the LT3579IUFD-1 support and which battery types is it directly compatible with?
The LT3579IUFD-1 operates from 2.5 V to 16 V input, covering single-cell Li-Ion batteries (2.7 V to 4.2 V), dual-cell Li-Ion packs (5.4 V to 8.4 V), and regulated 5 V or 12 V DC bus rails. This wide range makes it compatible with portable consumer electronics, laptop peripherals, and industrial equipment powered from a variety of standard battery and supply configurations.
How does current-mode PWM control in the LT3579IUFD-1 improve transient response compared to voltage-mode control?
Current-mode PWM control in the LT3579IUFD-1 senses inductor current on a cycle-by-cycle basis, providing inherent over-current protection and faster load transient response than voltage-mode regulators. This allows the output voltage to recover within a few microseconds during sudden load steps up to 6 A, making it suitable for processor core power supplies and communications equipment where rapid current demands must be met without exceeding ±5% output voltage deviation.
What is the package footprint of the LT3579IUFD-1 and how does it compare to a competing through-hole power module?
The LT3579IUFD-1 uses a 20-pin QFN package measuring approximately 4 mm x 4 mm, far smaller than a through-hole power module which typically occupies 20 mm x 20 mm or more. This compact footprint allows the switching regulator and its external inductor and capacitors to fit within a 1 cm² total area on a dense multilayer PCB, enabling high power density designs for portable and space-constrained industrial applications.
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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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