Analog Devices Inc./Maxim Integrated MAX662EVKIT-SO

Overview

The MAX662EVKIT-SO from Maxim Integrated is an assembled surface-mount evaluation board designed to simplify functional validation and performance testing of the MAX662A and MAX662 step-down DC-DC converters. It implements the standard reference circuit from the MAX662A datasheet (Figure 3a), supports normal/shutdown mode selection via a 3-pin jumper (J1), and operates across 0°C to +70°C ambient temperature.

For engineers reviewing the MAX662EVKIT-SO datasheet, MAX662EVKIT-SO pinout, MAX662EVKIT-SO application, or MAX662EVKIT-SO equivalent, this kit enables rapid verification of output regulation, shutdown behavior, load transient response, and layout compatibility with production designs using the MAX662A/MAX662 ICs.

Technical Context

The MAX662EVKIT-SO replicates the recommended application circuit for the MAX662A step-down regulator, featuring a fixed 5V output configuration with external feedback resistors omitted. It integrates two 0.22µF ceramic input capacitors (C1, C2), two 4.7µF low-ESR tantalum output capacitors (C4, C5), and a 0.1µF ceramic capacitor (C3) specific to the MAX662 variant.

Mode control is implemented through jumper J1: shorting pins 1–2 enables normal operation by grounding the SHDN pin; shorting pins 2–3 or leaving J1 open forces shutdown by pulling SHDN high via its internal VCC pull-up. The board's 1.5" × 1.1" PCB layout (Figures 2 and 3) is production-ready and directly copyable.

Key Specifications

Availability

MAX662EVKIT-SO is available at Aetrix Electronics and suitable for power supply validation, DC-DC converter qualification, and production layout prototyping requiring stable component supply and traceable evaluation hardware.

Supply support for MAX662EVKIT-SO 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

Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.

The MAX662EVKIT-SO belongs to Maxim's evaluation kit product line, developed specifically to accelerate design-in and electrical validation of the MAX662A/MAX662 step-down switching regulators in real-world power systems.

FAQ

What is the primary function of the MAX662EVKIT-SO?

The MAX662EVKIT-SO is a fully assembled evaluation board that enables functional testing and performance characterization of the MAX662A and MAX662 step-down DC-DC converters. It implements the standard reference design from the MAX662A datasheet and provides hardware-controlled enable/shutdown via jumper J1, allowing engineers to verify regulation accuracy, load response, and shutdown behavior without custom PCB development.

How does the jumper J1 control operation mode on the MAX662EVKIT-SO?

On the MAX662EVKIT-SO, jumper J1 is a 3-pin connector where pin 1 is grounded, pin 2 connects to the SHDN pin of the MAX662A, and pin 3 connects to VCC. Shorting pins 1–2 grounds SHDN for normal operation; shorting pins 2–3 or leaving J1 unshunted pulls SHDN high via its internal VCC pull-up, forcing shutdown mode. This matches the MAX662A's required SHDN logic polarity.

Which components on the MAX662EVKIT-SO are specific to the MAX662 versus the MAX662A?

The MAX662EVKIT-SO includes a 0.1µF ceramic capacitor (C3) designated for use with the MAX662 only, as noted in the component list. All other passive components-including the 0.22µF input capacitors (C1, C2), 4.7µF output capacitors (C4, C5), and the jumper/shunt assembly-are shared between MAX662 and MAX662A evaluation. No IC-level differences affect board-level compatibility.

Can the MAX662EVKIT-SO PCB layout be used directly in production designs?

Yes-the MAX662EVKIT-SO includes production-ready PCB layouts (Figures 2 and 3 in the documentation) explicitly stated as "can be copied directly and incorporated into production boards." Its 1.5" × 1.1" surface-mount layout follows Maxim's recommended routing, grounding, and decoupling practices for the MAX662A/MAX662, making it suitable for direct reuse in volume manufacturing.

What are the critical operating limits to observe when using the MAX662EVKIT-SO?

When using the MAX662EVKIT-SO, users must respect the MAX662A's input voltage limits per its datasheet, avoid shorting VOUT to ground, and prevent excessive output loading that causes VOUT to drop below VCC. Violating these conditions risks damaging the onboard MAX662A IC. The board itself has no additional protection circuitry beyond the IC's internal features, so adherence to absolute maximum ratings is essential.