Analog Devices Inc./Maxim Integrated MAX77839WEVKIT#

Overview

MAX77839WEVKIT# from Analog Devices is an evaluation kit designed to validate the MAX77839AEWL+, a 2.5A, 1.8V–5.5V input buck-boost converter in 15-bump WLP package. It supports configurable output voltage (2.3V–5.3V via SEL resistor), FPWM/SKIP mode selection, and POK/force-PWM GPIO functionality. The kit ships with default 3.3V output, 4.4A current limit, and active discharge enabled - ideal for portable power subsystem validation in battery-powered IoT and wearables.

For engineers reviewing the MAX77839WEVKIT# datasheet, MAX77839WEVKIT# pinout, MAX77839WEVKIT# application, or MAX77839WEVKIT# equivalent, this page delivers verified hardware configuration details, jumper-defined operating modes, test point access for VOUT/LX waveform analysis, and guidance for evaluating alternate MAX77839 variants (e.g., POK-enabled BEWL+/DEWL+).

Technical Context

The MAX77839WEVKIT# implements a fully assembled, tested reference design centered on the MAX77839AEWL+ buck-boost IC. It uses a 1μH inductor (XEL4020-102ME), 10μF/10V input capacitor (C1), and 47μF/6.3V output capacitor (C2), with dedicated sense points (VINS/PGNDS1, OUTS/PGNDS2) for high-accuracy voltage and ripple measurement.

Jumper configurations define core behavior: J2 (1–2) selects POK mode, J3 (2–3) enables SKIP mode by default, J4 (1–2) sets SEL-based output voltage (0Ω → 3.3V), and J5 (1–2) powers logic from VIN. The board supports all MAX77839 WLP variants without component changes - only U1 IC replacement and jumper reconfiguration required.

Key Specifications

Availability

MAX77839WEVKIT# is available at Aetrix Electronics and suitable for battery-powered portable electronics, wearable power management validation, and low-voltage industrial sensor node development requiring stable component supply and rapid prototyping support.

Supply support for MAX77839WEVKIT# includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing (DSP) technologies, serving precision instrumentation, communications, industrial, and automotive markets.

The MAX77839 product line targets ultra-compact, high-efficiency power conversion for space-constrained battery-operated devices - emphasizing low quiescent current (6μA), wide input range, and flexible output configuration in wafer-level packaging.

FAQ

What is the primary function of the MAX77839WEVKIT#?

The MAX77839WEVKIT# is a fully assembled evaluation platform for the MAX77839AEWL+ buck-boost converter. It enables functional verification, efficiency measurement, load transient testing, and output voltage configuration (2.3V–5.3V) using the SEL pin and R3 resistor. All jumpers, test points, and critical nodes (LX1, LX2, OUTS) are pre-populated per the MAX77839 data sheet layout guidelines.

Which MAX77839 IC variants can be evaluated using the MAX77839WEVKIT#?

The MAX77839WEVKIT# supports all WLP-packaged MAX77839 variants, including MAX77839AEWL+, MAX77839BEWL+, and MAX77839DEWL+. To evaluate POK versions (B/D), replace U1 with the target IC and configure J2 to position 1–2 while removing J3 - no passive component changes are needed per the official EV kit documentation.

How is output voltage configured on the MAX77839WEVKIT#?

Output voltage on the MAX77839WEVKIT# is set by the SEL pin resistor R3. With R3 = 0Ω (default J4 shunt), output is 3.3V. Other voltages are achieved by installing precision 1% resistors matching Table 3 values - e.g., 4.99kΩ for 2.3V, 768kΩ for 5.3V. The SEL pin interprets resistance to select one of 31 factory-programmed output levels in 100mV steps.

What are the key jumper functions on the MAX77839WEVKIT#?

J1 enables the IC by connecting EN to HI; J2 configures GPIO as POK (1–2) or FPWM (2–3); J3 selects SKIP mode (2–3, default) or FPWM mode (1–2); J4 connects R3 to SEL for voltage programming; J5 selects logic supply source (VIN or external). These jumpers allow full functional coverage of MAX77839 operating modes without soldering.

Does the MAX77839WEVKIT# support high-temperature operation up to +125°C?

The MAX77839 IC itself is rated for +125°C ambient operation, but the MAX77839WEVKIT# includes capacitors (C2, C4) not rated for that temperature. Per the official documentation, C2 (47μF X5R) and C4 (100μF X5R) exhibit increased leakage above their rated temperature - replacement with +125°C-rated components is required for reliable high-temp evaluation of the MAX77839WEVKIT#.