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Analog Devices LT8316IF#PBF — Analog & Data Acquisition
Analog Devices

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

MPNLT8316IF#PBF
End of Life

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.

$6.99Ref. price · indicative, final on quote
LT8316IF#PBF datasheet
Packaging20-TSSOP (0.173", 4.40mm Width), 15 Leads
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications

LT8316IF#PBF Technical Specifications
ParameterValue
Output typeTransistor Driver
Mounting typeSurface Mount
Voltage - supply (Vcc (Vdd))16V ~ 560V
Frequency3.5kHz ~ 140kHz
Number of outputs1
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

Product details

560 V input — what it means for the power rail

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. The switching frequency is programmable from 3.5 kHz to 140 kHz, letting you trade transformer size against switching losses. 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. The operating junction temperature range is -40°C to 125°C.

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.

Lifecycle and supply posture

The LT8316IF#PBF is listed as Active on the manufacturer's lifecycle record. 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.