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Analog Devices MAX1523EUT — Analog & Data Acquisition
Analog Devices

MAX1523EUT Boost/Flyback/SEPIC Controller, SOT-23-6

MPNMAX1523EUT
End of Life

Maxim Integrated MAX1523EUT simple boost controller, step-up/step-down function, boost/flyback/SEPIC topology, transistor driver output, 1 output, 90% duty cycle, 2.5V-5.5V supply, SOT-23-6 package, -40°C to 85°C operating temperature.

$2.14Ref. price · indicative, final on quote
MAX1523EUT datasheet
PackagingSOT-23-6
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.
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Specifications

MAX1523EUT Technical Specifications
ParameterValue
Output typeTransistor Driver
Mounting typeSurface Mount
Voltage - supply (Vcc (Vdd))2.5V ~ 5.5V
Number of outputs1
Output phases1
Duty cycle90%
Operating temperature-40°C ~ 85°C (TA)
PackageBulk
FunctionStep-Up, Step-Up/Step-Down
TopologyBoost, Flyback, SEPIC
Clock syncNo
CaseSOT-23-6
Control featuresEnable, Soft Start
Output configurationPositive
Synchronous rectifierNo

Product details

Topology flexibility in a six-pin SOT-23

The MAX1523EUT is a simple boost controller from Maxim Integrated that handles step-up and step-up/step-down regulation across boost, flyback, and SEPIC topologies. It drives an external transistor from a single output, with a 90% maximum duty cycle that suits moderate step-up ratios in portable or distributed-power rails.

Control features and thermal range

Enable and soft-start are integrated on-chip, so the designer gets sequenced turn-on without external RC networks. No synchronous rectifier means the external diode selection stays simple — a Schottky with appropriate voltage rating handles the catch function.

Package and mounting

Housed in a SOT-23-6 package (supplier device package same), surface-mount only. The six-pin footprint keeps the board area small — useful when the controller shares a tight layout with the power stage.

Frequently asked questions

Can MAX1523EUT be used for SEPIC topology?

Yes, the MAX1523EUT supports SEPIC topology alongside boost and flyback. The single-output transistor driver and 90% duty cycle accommodate the coupled-inductor or two-inductor SEPIC arrangement common in battery-powered applications needing a regulated output above or below the input.

Is MAX1523EUT equivalent to MAX1522EUT?

The MAX1522EUT is a close sibling in the same simple-boost-controller family, but the evidence does not confirm pin-compatibility or identical function. Verify the datasheet for differences in control features or duty cycle before substituting.