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Analog Devices MAX1678EUA+ — DC-DC Power Modules
Analog Devices

MAX1678EUA+ Step-Up DC-DC, 550mA Switch, 0.7V Input

MPNMAX1678EUA+
End of Life

Analog Devices MAX1678EUA+ step-up DC-DC converter, 550mA switch, 0.7V to 5.5V input, adjustable/fixed 2V/3.3V output, 150kHz, synchronous rectifier, 8-uMAX/uSOP, tube.

$5.09Ref. price · indicative, final on quote
Packaging8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
StockContact for availability
Lead timeIn Stock wk
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.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

MAX1678EUA+ Technical Specifications
ParameterValue
Output typeAdjustable (Fixed)
Mounting typeSurface Mount
Voltage - input5.5V
Voltage - output5.5V
Voltage - output (Min (Fixed))2V (3.3V)
Current - output550mA (Switch)
Frequency150kHz
Number of outputs1
Operating temperature-40°C ~ 85°C (TA)
PackageTube
FunctionStep-Up
TopologyBoost
Case8-TSSOP, 8-MSOP (0.118\", 3.00mm Width)
Output configurationPositive
Synchronous rectifierYes

Product details

0.7V start-up, 550mA switch — low-voltage boost for battery gear

The MAX1678EUA+ is a step-up (boost) DC-DC converter that starts from an input as low as 0.7 V and delivers up to 550 mA on the internal switch — meaning it can generate a regulated 3.3 V rail from a single alkaline cell that has dropped to near end-of-life voltage. Switching at 150 kHz, the part uses a synchronous rectifier — the on-chip FET replaces the usual external Schottky diode, which cuts the forward-drop loss and lifts efficiency in the 2–3.3 V output range typical for portable gear.

Frequently asked questions

How can I order MAX1678EUA+ or check stock?

The MAX1678EUA+ is an active, RoHS3-compliant boost converter. No stock-holding claim is made — submit a quote request for your target quantity.

Is MAX1678EUA+ a direct replacement for MAX1678ESA+?

The MAX1678EUA+ and MAX1678ESA+ share the same electrical specifications — both are 550 mA switch boost converters with 0.7 V minimum input and synchronous rectification. The difference is the package: the EUA+ suffix indicates the 8-uMAX/uSOP (MSOP-8) package, while the ESA+ suffix is the SOIC-8 package. They are not pin-to-pin compatible without a board layout change.

Is MAX1678EUA+ obsolete or end-of-life?

No.