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Analog Devices ADP1108AR-3.3 — Memory (DRAM / SRAM / Flash / EEPROM)
Analog Devices

ADP1108AR-3.3 DC-DC Converter, 3.3 V Fixed Output, 19 kHz

MPNADP1108AR-3.3
End of Life

Analog Devices ADP1108AR-3.3, series ADP1108, step-up/step-down DC-DC converter, buck-boost topology, fixed 3.3 V output, 2 V to 30 V input, 19 kHz switching, 8-SOIC surface mount, 0°C to 70°C operating temperature.

$0.49Ref. price · indicative, final on quote
ADP1108AR-3.3 datasheet
Packaging8-SOIC (0.154", 3.90mm Width)
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

ADP1108AR-3.3 Technical Specifications
ParameterValue
SeriesADP1108
Output typeFixed
Mounting typeSurface Mount
Voltage - input30V
Voltage - output (Min (Fixed))3.3V
Frequency19kHz
Number of outputs1
Operating temperature0°C ~ 70°C
PackageBulk
FunctionStep-Up/Step-Down
TopologyBuck-Boost
Case8-SOIC (0.154\", 3.90mm Width)
Output configurationPositive
Synchronous rectifierNo

Product details

The ADP1108AR-3.3 from Analog Devices is a single-output buck-boost DC-DC converter that delivers a fixed 3.3 V rail. It accepts an input from 2 V up to 30 V.

What the ratings mean for the BOM

Fixed 3.3 V output means no external resistor divider is needed — the feedback is trimmed inside. That saves two resistors and a potential noise pickup node on the feedback trace.

Lifecycle status is Active — no end-of-life notice on record, no last-time-buy window looming. The RoHS compliance is listed as non-compliant, so this is a tin-lead (SnPb) finish part.

Frequently asked questions

Is ADP1108AR-3.3 obsolete or still active?

The ADP1108AR-3.3 is listed as Active on the lifecycle record. No discontinuation notice is in effect.

Does ADP1108AR-3.3 require an external Schottky diode?

Yes. The part does not include a synchronous rectifier, so an external Schottky diode is required for the buck-boost topology.

What is a suitable replacement for ADP1108AR-3.3?

A functional alternative is the ADP1111ANZ-5, which offers a fixed 5 V output in a through-hole package with a 72 kHz switching frequency. For a surface-mount adjustable-output option, the ADP1111ARZ provides a 1.2 V to 12 V adjustable output in an SOIC package. Neither is a drop-in replacement — verify the pinout, output voltage, and switching frequency against your design.

What is the switching frequency of ADP1108AR-3.3?

The switching frequency is 19 kHz.