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Analog Devices MAX17243ETPA+ — DC-DC Power Modules
Analog Devices

MAX17243ETPA+ Buck Converter, 3.5-36V Input, 3A Output

MPNMAX17243ETPA+
End of Life

Analog Devices MAX17243ETPA+, Step-Down Buck Regulator, Adjustable (Fixed) Output, 3A, 3.5V to 36V Input, 220kHz to 2.2MHz, 20-WQFN Exposed Pad, -40°C to 85°C.

$7.07Ref. price · indicative, final on quote
MAX17243ETPA+ datasheet
Packaging20-WQFN Exposed Pad
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
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Specifications

MAX17243ETPA+ Technical Specifications
ParameterValue
Output typeAdjustable (Fixed)
Mounting typeSurface Mount
Voltage - input3.5V
Voltage - output10V
Voltage - output (Min (Fixed))1V (3.3V)
Current - output3A
Frequency220kHz ~ 2.2MHz
Number of outputs1
Operating temperature-40°C ~ 85°C
PackageStrip
FunctionStep-Down
TopologyBuck
Case20-WQFN Exposed Pad
Output configurationPositive
Synchronous rectifierYes

Product details

What this buck regulator brings to the rail

The MAX17243ETPA+ is a step-down (buck) switching regulator from Analog Devices that takes a 3.5V to 36V input rail and delivers a regulated adjustable output from 1V up to 10V at 3A. It integrates a synchronous rectifier, which means the low-side MOSFET is on-die rather than external — that saves a diode and improves efficiency, especially at lower output voltages where the freewheeling diode drop would otherwise dominate losses. The switching frequency is programmable from 220 kHz to 2.2 MHz, letting you trade off inductor size against switching losses. It comes in a 20-pin WQFN with an exposed pad (5x5 mm) for thermal dissipation, and it is rated for the -40°C to 85°C industrial temperature range. Typical applications include point-of-load regulation in industrial control, telecom infrastructure, battery-powered equipment, and distributed power architectures where a wide input range and compact footprint matter.

Input range and output flexibility — what it means for the BOM

The 3.5V minimum input allows operation from a 5V rail or a single-cell Li-ion battery. The 36V maximum input covers 24V industrial supplies with margin.

Lifecycle and sourcing

The MAX17243ETPA+ carries an Active lifecycle status from Analog Devices, with ROHS3 compliance.

Frequently asked questions

What is the output adjustable range of MAX17243ETPA+?

A fixed 3.3V output option is also available without the divider.

How does MAX17243ETPA+ compare to TPS5430?

The TPS5430 is a 5.5V to 36V input, 3A buck from TI with a fixed 500 kHz switching frequency and external Schottky diode (non-synchronous). The MAX17243ETPA+ integrates the synchronous rectifier, offers a wider adjustable switching frequency range (220 kHz to 2.2 MHz), and has a lower minimum input voltage (3.5V vs 5.5V). The TPS5430 is in an SOIC-8 package; the MAX17243ETPA+ is in a 20-TQFN (5x5 mm) with exposed pad. They are not pin-compatible — the choice depends on whether you need synchronous rectification for efficiency and the wider frequency range, or prefer a larger through-hole-frien