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Analog Devices LT8316IF#PBF — DC-DC Power Modules
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RoHS Compliant · Lead-Free EIA-481 Standard
Analog Devices / DC-DC Power Modules

LT8316IF#PBF Switching Regulator, 16V-560V Input

MPN LT8316IF#PBF
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Analog Devices LT8316IF#PBF, 560VIN Micropower Isolated No-Opto Switching Regulator, Step-Up/Step-Down, Boost/Buck/Flyback Topology, 1 Output, Transistor Driver, 3.5kHz-140kHz, 20-TSSOP, -40°C to 125°C, Tube.

In Stock: 125 pcs
MOQ: 1 pcs
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[SPEC] Essential Parameters Snapshot Full Specifications (15)
Package / Case 20-TSSOP (0.173", 4.40mm Width), 15 Leads
Supply Voltage 16V ~ 560V

Full Technical Specifications

15 Parameters
LT8316IF#PBF specifications
Parameter / AttributeSpecification / Value
Output typeTransistor Driver
MountingSurface Mount
Voltage - supply (Vcc (Vdd))16V ~ 560V
Frequency - switching3.5kHz ~ 140kHz
I/O channels1
Output phases1
Operating temperature-40°C ~ 125°C (TJ)
PackageTube
FunctionStep-Up, Step-Down, Step-Up/Step-Down
TopologyBoost, Buck, Flyback
Clock syncNo
Case20-TSSOP (0.173\", 4.40mm Width), 15 Leads
Control featuresCurrent Limit, Enable, Soft Start
Output configurationPositive, Isolation Capable
Synchronous rectifierYes
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Technical Details & Description

The LT8316IF#PBF handles a supply range of 16 V to 560 V (Vcc/Vdd). It supports boost, buck, and flyback topologies, and the output is isolation-capable. A single transistor-driver output drives an external MOSFET, and synchronous rectification is built in — that recovers the diode-drop loss on the secondary side, which matters for efficiency above a few watts. Control features include current limit, enable, and soft start.

Package and mounting — 20-TSSOP with 15 leads

The LT8316IF#PBF comes in a 20-TSSOP package (0.173" wide, 4.40 mm body) with 15 populated leads, surface-mount. The supplier device package is 20-TSSOP. It ships in Tube form.

There is no NRND or last-time-buy notice attached, so it remains a valid selection for new production builds. The part is ROHS3 compliant.

Frequently asked questions

Does LT8316IF#PBF support flyback topology with no optocoupler?

Yes. The output configuration is isolation-capable, and the part is designed for no-opto flyback regulation. It senses the output voltage from the primary-side flyback waveform, eliminating the optocoupler and its associated bias circuitry.

What are the alternatives to LT8316IF#PBF?

The LT3748 family (LT3748EMS#PBF, LT3748IMS#PBF, LT3748HMS#PBF) is the closest functional peer — also a no-opto flyback controller in a similar TSSOP package, with enable and soft start. Key differences: the LT3748 runs from a 5 V supply (not 16 V to 560 V), lacks synchronous rectification, and its operating temperature range tops out at 125°C or 150°C depending on suffix. The LT8316IF#PBF's wider input range and synchronous rectifier make it the better fit for high-voltage, higher-efficiency designs.

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