Analog Devices Inc./Maxim Integrated MAX77646EVKIT#

Overview

MAX77646EVKIT# from Analog Devices is a fully assembled and tested evaluation kit designed to accelerate development and validation of the MAX77646 ultra-configurable SIMO PMIC. It supports resistor-programmable output voltages (SBB0: 0.65V–5.0V, SBB1/SBB2: 0.5V–1.8V, LDO: 0.8V–1.8V), inductor peak current tuning (1.2A–2.3A), and real-time electronic load control (steady-state, transient, random modes) for all four outputs via Windows GUI over USB.

For engineers reviewing the MAX77646EVKIT# datasheet, MAX77646EVKIT# pinout, MAX77646EVKIT# application, or MAX77646EVKIT# equivalent, this kit provides immediate access to hardware-enabling features including on-board ADC monitoring (12-bit, 8-channel), I²C-controlled electronic loads with 0.1Ω/0.5Ω sense resistors, jumper-based regulator enable/disable, and RSEL-based voltage/peak-current configuration - all critical for battery-powered wearable, IoT sensor node, and primary-cell energy harvesting designs.

Technical Context

The MAX77646EVKIT# implements a complete testbed for the MAX77646 SIMO PMIC, integrating FTDI FT2232HL USB-to-I²C bridge, MAX11614 12-bit ADC for output voltage/current sensing, MAX5825 octal DAC for precision load control, and four MAX44251 ultra-precision op-amps driving IRFHM8337 N-channel MOSFETs as programmable electronic loads. All regulator outputs (SBB0–SBB2, LDO) are routed to dedicated test points and load headers (J201–J207).

Hardware configurability includes six dual-position jumpers (J2–J6, J8) for RSEL resistor selection, three 3-pin enable jumpers (J7, J9, J11) for individual SBB/LDO power gating, and level-shifting circuitry (MAX14611) enabling I²C communication between 3.3V host and 1.8V/0.65V regulator domains. The board includes spare inductors (L3–L10) and through-hole resistor pads (R30) for peak current and voltage optimization.

Key Specifications

Availability

MAX77646EVKIT# is available at Aetrix Electronics and suitable for wearable electronics prototyping, primary-cell IoT sensor node validation, and ultra-low-power PMIC design verification requiring stable component supply, traceable sourcing, and long-term lifecycle support.

Supply support for MAX77646EVKIT# 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 industrial, automotive, communications, and healthcare markets.

The MAX77646 product line targets ultra-low-quiescent-current power management for single-cell primary battery applications (e.g., coin cells, alkaline), emphasizing minimal standby current (<1μA), flexible multi-rail generation, and programmable efficiency across light-to-heavy load conditions.

FAQ

What is the primary function of the MAX77646EVKIT#?

The MAX77646EVKIT# is an evaluation platform for the MAX77646 SIMO PMIC, enabling rapid characterization of its three buck-boost (SBB0–SBB2) and one LDO output rails. It provides hands-on access to resistor-programmable voltage settings, inductor peak current tuning, and real-time electronic load control via Windows GUI - eliminating the need for external instrumentation during early-stage PMIC validation.

Does the MAX77646EVKIT# include software and drivers?

Yes, the MAX77646EVKIT# requires the official Analog Devices GUI software, downloadable from www.analog.com/max77646evkit under Design Resources. Upon first USB connection, Windows automatically installs FTDI drivers for the FT2232HL interface. The GUI enables full control of electronic loads (steady-state/transient/random), monitors regulator outputs via ADC, and displays real-time voltage/current telemetry - all without modifying firmware or hardware.

How are the SBB and LDO output voltages configured on the MAX77646EVKIT#?

Output voltages on the MAX77646EVKIT# are configured using pre-installed resistors and jumpers: J2 sets SBB2 (0.5V/1.1V/pot), J3 sets LDO (0.8V/1.8V/pot), J5 sets SBB1 (1.2V/1.8V/pot), and J8 sets SBB0 (3.3V/5.0V/pot). Each jumper connects the corresponding RSEL pin to ground through a specific resistor value, directly programming the MAX77646's internal feedback network per the device's datasheet equations.

Can the MAX77646EVKIT# evaluate transient load response?

Yes, the MAX77646EVKIT# supports transient load testing by removing jumpers J200–J206 and applying a 1V–3V signal from an external function generator to the gate of each load MOSFET (Q200–Q203). This bypasses the DAC-driven op-amp path and allows direct injection of fast load steps (e.g., 10%–90% rise time <100ns), enabling measurement of SBB/LDO regulation stability, overshoot, and recovery time under dynamic conditions.

What measurement capabilities does the MAX77646EVKIT# provide?

The MAX77646EVKIT# integrates a 12-bit MAX11614 ADC with eight input channels, measuring SBB0/SBB1/SBB2/LDO voltages via precision 2× voltage dividers and 20× gain op-amp stages (MAX44251). Current is derived from 0.1Ω (SBBx) and 0.5Ω (LDO) sense resistors, providing calibrated mA-level resolution. All telemetry streams in real time to the GUI over USB, with no external DMM required for basic characterization.