LT3580HMS8E#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
LT3580HMS8E#PBF is a current-mode PWM boost and inverting DC/DC converter by Analog Devices (Linear Technology) featuring a 2 A integrated switch, programmable soft-start, and synchronization, with input voltages from 2.5 V to 32 V. Key specs: 32 V max input, 2 A switch current, 8-lead SOIC package. From competitive pricing, in stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LT3580HMS8E#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.8300(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LT3580HMS8E#PBF?
- Integrated 2 A power switch supports both boost and inverting converter topologies from a single IC, reducing external component count
- Wide input voltage range of 2.5 V to 32 V covers battery, automotive, and industrial supply rails in a single device
- Programmable soft-start reduces inrush current at power-up, protecting sensitive load circuits and upstream power supplies
- Synchronization input allows the PWM switching frequency to be locked to an external clock, minimizing EMI interference in noise-sensitive analog and RF systems
What is LT3580HMS8E#PBF used for?
LT3580HMS8E#PBF is suited for generating negative supply rails from a positive input in mixed-signal systems, powering op-amp rails, ADC references, and LCD bias circuits from a single positive source at inputs from 2.5 V to 32 V. Its 2 A integrated switch and boost capability make it applicable in embedded systems, industrial instruments, and portable equipment requiring higher voltage rails from a lower input battery. The synchronization feature is especially valuable in software-defined radio, medical imaging, and precision measurement equipment where switching noise must be moved outside sensitive signal bandwidths.
What are the specifications of LT3580HMS8E#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1662 |
| YTEOL | 10 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 32V |
| Input Voltage-Min | 2.5V |
| Input Voltage-Nom | 5V |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 2.8A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 2500kHz |
| Technology | CMOS |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| 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 |
Where can I find the LT3580HMS8E#PBF datasheet?
LT3580HMS8E#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT3580HMS8E#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does LT3580HMS8E#PBF generate a negative voltage rail from a positive supply, and what output voltages are achievable?
LT3580HMS8E#PBF operates in an inverting (buck-boost) topology by connecting the input positive rail and using the integrated 2 A switch to invert the polarity. With a 5 V input, it can generate regulated negative outputs of -5 V, -12 V, or other values set by the external feedback resistor divider, as long as the total switch voltage (|Vout| + Vin) stays within the 32 V absolute maximum. This makes it suitable for generating -5 V or -15 V rails for op-amps and analog circuits from a single 5 V or 12 V positive input.
What does the soft-start feature in LT3580HMS8E#PBF do and how is the ramp time programmed?
Soft-start gradually ramps the current limit of the 2 A switch from zero to its programmed maximum over a user-defined interval, reducing capacitor inrush current that can trip upstream fuses or cause input voltage droop. The soft-start duration is set by an external capacitor on the SS pin — larger capacitance extends the ramp. A typical 100 nF capacitor provides roughly 1-3 ms ramp time, limiting inrush to a fraction of the 2 A peak switch current and protecting fragile power source impedances.
For a software-defined radio design, how does synchronizing LT3580HMS8E#PBF to an external clock reduce interference?
The synchronization input of LT3580HMS8E#PBF locks the PWM switching frequency to an external reference clock, allowing the designer to place switching harmonics at known frequencies outside the receive bandwidth (e.g., above 100 MHz for VHF/UHF SDR). Without synchronization, a free-running switcher's frequency may drift over temperature and appear as interference within the 1 MHz to 50 MHz band. By locking to a 3 V or 5 V logic clock signal, harmonic placement becomes deterministic and filter design is straightforward.
Which alternative Analog Devices DC/DC converters should be considered if a design needs output current beyond 2 A?
When load current exceeds the 2 A integrated switch limit of LT3580HMS8E#PBF, the LT3757 (4 A switch) or LT8390 (6 A capability) family members provide higher current boost and inverting capability in similar SOIC or thermally enhanced packages. If input voltage exceeds 32 V — for example in 48 V automotive or industrial systems — the LT8330 (60 V input) or LT3757A (100 V input) are applicable alternatives with pin-compatible or equivalent control architectures from Analog Devices.
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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+ | $4.3744 | $4.37 |
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