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Analog Devices MAX669EUB/V+ — Discrete Semiconductors
Analog Devices

MAX669EUB/V+ Switching Controller, AEC-Q100, 100kHz–500kHz

MPNMAX669EUB/V+
End of Life

Maxim Integrated MAX669EUB/V+, Automotive AEC-Q100 switching controller, Boost/Flyback/SEPIC topology, 100kHz–500kHz switching, 1.8V–28V supply, 90% max duty cycle, 10-uMAX/uSOP package.

$6.53Ref. price · indicative, final on quote
MAX669EUB/V+ datasheet
Packaging10-TFSOP, 10-MSOP (0.118", 3.00mm 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.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

MAX669EUB/V+ Technical Specifications
ParameterValue
SeriesAutomotive, AEC-Q100
Output typeTransistor Driver
Mounting typeSurface Mount
Voltage - supply (Vcc (Vdd))1.8V ~ 28V
Frequency100kHz ~ 500kHz
Number of outputs1
Output phases1
Duty cycle90%
Operating temperature-40°C ~ 85°C (TA)
PackageTube
FunctionStep-Up, Step-Up/Step-Down
TopologyBoost, Flyback, SEPIC
Clock syncYes
Case10-TFSOP, 10-MSOP (0.118\", 3.00mm Width)
Control featuresEnable, Frequency Control
Output configurationPositive, Isolation Capable
Synchronous rectifierNo

Product details

What this part is and where it fits

The MAX669EUB/V+ from Maxim Integrated is a current-mode PWM switching controller designed for boost, flyback, and SEPIC topologies. It is qualified to AEC-Q100, making it suitable for automotive power supplies — under-hood ECUs, infotainment rails, or sensor bias generators — where the supply voltage can swing from 1.8 V to 28 V. The controller drives an external N-channel MOSFET and operates with a single output phase.

Key ratings and what they mean for your BOM

The switching frequency range of 100 kHz to 500 kHz lets you trade off inductor size against switching losses. The 90% maximum duty cycle supports moderate step-up ratios in boost or SEPIC.

Lifecycle and sourcing reality

The MAX669EUB/V+ is listed as Active with ROHS3 compliance. No end-of-life notice or last-time-buy window has been announced. For a BOM line that needs automotive-grade qualification, this part is a stable choice — no imminent obsolescence risk. Sourcing is through independent distribution; current pricing and lead time are confirmed at quote time against an RFQ.

Frequently asked questions

Is MAX669EUB/V+ automotive qualified?

Yes, the MAX669EUB/V+ is qualified to AEC-Q100, the automotive reliability standard. It is part of Maxim's Automotive series and is rated for an operating temperature range of -40°C to 85°C.

Can MAX669EUB/V+ be used in a SEPIC converter?

Yes, the MAX669EUB/V+ supports SEPIC topology. It also supports boost and flyback topologies. The controller includes clock synchronization and an enable pin, which are useful for multi-rail designs.

What is the maximum duty cycle of MAX669EUB/V+?

The maximum duty cycle is 90%. This limits the achievable step-up ratio in boost or SEPIC configurations — for a 12 V input, the output can be regulated up to roughly 120 V before hitting the duty-cycle ceiling, assuming ideal components.