LT3581IDE#PBF Analog Devices Integrated Circuit (Small Outline No-lead) In Stock
LT3581IDE#PBF is a 3 A boost and inverting DC/DC converter from Analog Devices with built-in fault protection, current-mode PWM control, and an input voltage range of 2.5 V to 22 V. It also operates as an LDO regulator. Available in a compact 8-lead small-outline no-lead package.
- Manufacturer
- Analog Devices
- Package
- Small Outline No-lead
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- LT3581IDE#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.7600(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LT3581IDE#PBF?
- 3 A continuous output current in boost and inverting topologies
- Input voltage range 2.5 V to 22 V with 5 V nominal operation
- Current-mode PWM control for fast transient response
- Integrated fault protection including over-current and over-temperature shutdown
- Can operate as an LDO linear regulator for dual-mode flexibility
- 8-lead small-outline no-lead package for compact PCB footprint
What is LT3581IDE#PBF used for?
LT3581IDE#PBF is designed for portable instruments, industrial sensors, and telecom line cards that require a single-inductor boost or inverting supply from a 2.5 V to 22 V input rail. Its current-mode control and integrated fault protection make it reliable for battery-powered medical devices and point-of-load converters needing tight output regulation. The LDO fallback mode adds design flexibility when a linear post-regulator is needed in noise-sensitive analog front ends.
What are the specifications of LT3581IDE#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1708 |
| YTEOL | 10 |
| Additional Feature | ALSO OPERATES AS LDO REGULATOR |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 22V |
| Input Voltage-Min | 2.5V |
| Input Voltage-Nom | 5V |
| JESD-30 Code | R-PDSO-N14 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 5.4A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC14,.12,20 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 2750kHz |
| Technology | BIPOLAR |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline 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 |
Where can I find the LT3581IDE#PBF datasheet?
LT3581IDE#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT3581IDE#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What output current capability does the LT3581IDE#PBF provide in boost mode?
The LT3581IDE#PBF delivers up to 3 A continuous output current in boost mode, making it suitable for powering DSP cores, FPGAs, or multi-channel analog circuits from a 2.5 V to 22 V input supply. The current-mode PWM architecture ensures stable regulation across the full load range.
How does LT3581IDE#PBF handle fault conditions in a 5 V bus-powered design?
The device includes integrated over-current limiting and over-temperature shutdown, automatically reducing output current and disabling switching if junction temperature exceeds safe limits. In a 5 V nominal input design, this fault protection prevents damage to the inductor and output capacitors during short-circuit events lasting several milliseconds.
When is the LT3581IDE#PBF LDO mode advantageous compared to its switching mode?
LDO mode is advantageous when the input voltage is close to the desired output voltage, typically within 1 V to 2 V, because it eliminates switching noise that could couple into sensitive analog or RF circuits. Designs requiring sub-100 mV output ripple for precision ADC or audio paths benefit from activating LDO mode on the LT3581IDE#PBF.
What topologies does LT3581IDE#PBF support and in which industrial applications are both topologies useful?
LT3581IDE#PBF supports boost and inverting (negative output) topologies. Boost mode is used in industrial sensors needing 12 V from a 3.3 V rail, while inverting mode generates a -5 V or -12 V bias rail for op-amp and DAC circuits operating from a single positive supply in programmable logic controllers and test equipment.
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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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