Skip to main content
Log in
Analog Devices MAX17691AATC+ — DC-DC Power Modules

MAX17691AATC+ Isolated Flyback Switching Regulator, 7.5 W

MPNMAX17691AATC+
End of Life

Analog Devices MAX17691AATC+ isolated flyback switching regulator, 7.5 W output, 4.2V–60V input, 100kHz–350kHz switching, -40°C to 125°C, 12-WFDFN exposed pad, tray.

$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

MAX17691AATC+ 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, Short Circuit, UVLO
Output isolationIsolated
Internal switchYes

Product details

Isolated flyback in a small 12-TDFN package

The MAX17691AATC+ is an integrated isolated flyback switching regulator from Analog Devices, packing the controller and internal switch into a 12-TDFN (3x3 mm) package. It delivers up to 7.5 W with a wide input range of 4.2 V to 60 V, making it a fit for industrial and automotive auxiliary supplies where board space is tight. Switching frequency runs between 100 kHz and 350 kHz, which lets you balance transformer size against efficiency.

The 7.5 W output power is the total you can pull from the isolated rail. The 68% duty cycle limits how much of each switching period the primary-side switch can be on. Fault protection includes current limiting, over-temperature, over-voltage, short-circuit, and UVLO — all on-chip. No commercial-grade derating needed for harsh environments.

Active, no LTB risk

Marked as Active with ROHS3 compliance.

Frequently asked questions

Can MAX17691AATC+ be used for a 5V output isolated flyback at 7.5W?

Yes. The 7.5 W output capability and wide input range (4.2 V to 60 V) make it suitable for a 5 V / 1.5 A isolated flyback design. The internal switch and integrated fault protection simplify the circuit.

What is the closest pin-compatible alternative to MAX17691AATC+?

The MAX17690 is a controller-only version (no internal switch) in the same family. The MAX17691AATC+ integrates the switch, so a direct pin-compatible swap is not possible without board changes. For a drop-in replacement, stick with the same order code.