LT8304HS8E#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
The LT8304HS8E#PBF is a micropower no-opto isolated flyback converter IC from Analog Devices featuring a 150V 3.6A integrated switch, operating from 3V to 100V input. It uses voltage-mode resonant control to regulate isolated outputs without an optocoupler, simplifying design. Available in an SO-8 package with RoHS-compliant construction for compact power supply designs.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LT8304HS8E#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $5.7700(MOQ 19)
- Temp Range
- -40.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LT8304HS8E#PBF?
- Integrated 150V/3.6A power switch enables compact isolated flyback designs without external high-voltage transistors
- No optocoupler required: proprietary resonant control regulates isolated output voltage directly, reducing BOM count
- Wide 3V to 100V input range supports automotive, industrial, and telecom bus voltages including 24V and 48V rails
- Micropower quiescent current allows efficient operation in standby and light-load conditions
- SO-8 package with lead-free RoHS-compliant construction suits space-constrained PCB layouts
What is LT8304HS8E#PBF used for?
The LT8304HS8E#PBF is well-suited for generating isolated bias rails in industrial sensors, field transmitters, and PLC I/O modules where 24V or 48V bus voltages are common. Its no-opto architecture simplifies isolated power supplies in telecom line cards and smart meters operating from wide-range DC inputs up to 100V. The device also fits automotive auxiliary power applications requiring compact, isolated DC-DC conversion from a 12V or 24V vehicle bus.
What are the specifications of LT8304HS8E#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1857 |
| YTEOL | 8.5 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | VOLTAGE-MODE |
| Control Technique | RESONANT CONTROL |
| Input Voltage-Max | 100V |
| Input Voltage-Min | 3V |
| Input Voltage-Nom | 24V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 2A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG |
| Surface Mount | YES |
| Switcher Configuration | BUCK-BOOST |
| Switching Frequency-Max | 385kHz |
| Technology | BIPOLAR |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) - with Nickel (Ni) barrier |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Where can I find the LT8304HS8E#PBF datasheet?
LT8304HS8E#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT8304HS8E#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum input voltage the LT8304HS8E#PBF can handle, and how does that affect industrial 48V bus applications?
The LT8304HS8E#PBF accepts input voltages from 3V to 100V, making it fully compatible with 48V industrial bus rails including transient spikes. The 150V rated internal switch provides over 50V of headroom above the nominal 48V rail, ensuring reliable operation across standard industrial voltage tolerances and line transients without requiring external protection components.
How does the LT8304HS8E#PBF eliminate the need for an optocoupler in an isolated flyback design?
The LT8304HS8E#PBF uses proprietary voltage-mode resonant control to sense and regulate the isolated output voltage through the transformer's magnetizing inductance, removing the need for an optocoupler feedback path. This reduces BOM by at least 2-3 components and eliminates the optocoupler's bandwidth and aging limitations, enabling designs with fewer than 8 external passive components around the SO-8 package.
Which isolated power supply topology benefits most from the LT8304HS8E#PBF's integrated 3.6A switch rating?
The integrated 3.6A peak switch current is optimized for flyback converters delivering 1W to 5W of isolated output power from a 24V or 48V input. This current rating allows the transformer to be sized for common compact EPC or EFD core types in the 10µH to 100µH primary inductance range, making it practical for field transmitter and sensor bias rails without a large transformer footprint.
What package does the LT8304HS8E#PBF use and how does it compare to alternative isolated converter solutions?
The LT8304HS8E#PBF is housed in an 8-pin SOIC (SO-8) package with a 1.27mm pitch, occupying roughly 5mm x 4mm of PCB area. Compared to discrete no-opto flyback designs requiring a separate controller IC, gate driver, and high-voltage MOSFET, the integrated SO-8 solution reduces board area by approximately 60% and simplifies layout by keeping switching nodes within a single 8-pin footprint.
When would an engineer choose the LT8304HS8E#PBF over a transformer-driver IC like the LT3573 for an isolated supply?
The LT8304HS8E#PBF is preferred when input voltages exceed 60V, such as 72V or 100V telecom rails, because its 150V switch rating and wide 3V-100V input range surpass the LT3573's lower voltage capability. For 5V to 36V input applications with tight regulation requirements, the LT3573 may offer better load regulation, but the LT8304HS8E#PBF's resonant no-opto control is the simpler solution at higher bus voltages.
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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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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 19+ | $7.6500 | $145.35 |
| 43+ | $7.0768 | $304.30 |
| 100+ | $6.5357 | $653.57 |
| 1000+ | $5.7700 | $5770.00 |
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