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Analog Devices MAX17691BATC+ — DC-DC Power Modules

MAX17691BATC+ Isolated Flyback Switcher, 7.5 W, 60 V Input

MPNMAX17691BATC+
End of Life

Analog Devices MAX17691BATC+ isolated flyback switching regulator, 4.2 V to 60 V input, 7.5 W output, 100 kHz to 350 kHz switching frequency, 12-TDFN (3x3) package, -40°C to 125°C.

$4.61Ref. price · indicative, final on quote
Packaging12-WFDFN Exposed Pad
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

MAX17691BATC+ specifications
ParameterValue
MountingSurface Mount
Voltage - supply (Vcc (Vdd))4.2V ~ 60V
Power (Watts)7.5 W
Frequency100kHz ~ 350kHz
Duty cycle68%
Operating temperature-40°C ~ 125°C (TA)
PackageTray
TopologyFlyback
Case12-WFDFN Exposed Pad
Control featuresEN, Soft Start
Fault protectionCurrent Limiting, Over Temperature, Over Voltage
Output isolationIsolated
Internal switchYes

Product details

The Analog Devices MAX17691BATC+ is an isolated flyback switching regulator with an internal power switch, designed for isolated DC-DC supplies up to 7.5 W. It accepts a 4.2 V to 60 V input.

7.5 W output — what it can drive

7.5 W is enough for bias rails in motor drives, gate-drive supplies for IGBTs or SiC FETs, auxiliary housekeeping in telecom bricks, or isolated sensor power in industrial field transmitters.

Wide input range and temperature grade

The 4.2 V to 60 V input range handles cranking and load-dump transients on automotive buses without external clamping.

Fault protection and control features

Built-in fault protection covers current limiting, over-temperature, and over-voltage — three common failure modes in isolated supplies. The enable (EN) pin and soft-start control let the system sequencer hold off the output until the upstream rail is stable, reducing inrush on the input bus.

The 12-TDFN (3x3 mm) package has an exposed pad underneath for thermal dissipation.

Frequently asked questions

What is the closest pin-compatible alternative to MAX17691BATC+?

The MAX17690 is the same-function sibling in the same isolated flyback family. The key difference is that the MAX17691BATC+ includes an internal power switch (rated for 7.5 W), whereas the MAX17690 is a controller that drives an external MOSFET — so the MAX17691BATC+ saves board space and BOM count at the cost of a fixed power ceiling. Pin compatibility depends on the exact package variant; verify the footprint against the datasheet before substituting.

What is MAX17691BATC+'s listed topology?

The listed topology is flyback, with output isolation built in. The internal switch handles the primary-side switching, and the secondary-side regulation is achieved without an optocoupler in basic isolated designs.