Analog Devices Inc. DC1386B

Overview

DC1386B from Analog Devices (formerly Linear Technology) is an evaluation board for the LTM8032 - a 36V input, 2A EN55022 Class B-compliant µModule step-down DC/DC regulator. It integrates controller, power switches, inductor, EMI filter, and support components in a 9mm × 15mm LGA package. Designed for high-density point-of-load regulation in space-constrained industrial and automotive systems, it delivers 0.8V–10V output with programmable 200kHz–2.4MHz switching frequency.

For engineers reviewing the DC1386B datasheet, DC1386B pinout, DC1386B application, or DC1386B equivalent, this page provides verified layout guidance, thermal performance data, EMI test configurations, BIAS pin routing best practices, and validated component selection tables for rapid prototyping of LTM8032-based power supplies.

Technical Context

The DC1386B implements the LTM8032 in a fixed 5V/2A configuration with optimized PCB layout for minimal radiated emissions. It incorporates the integrated input EMI filter, auxiliary BIAS supply routing to AUX, and SYNC pin pre-configured for Burst Mode operation via GND tie.

Thermal design uses a 4-layer board with internal ground and power planes, thermal vias under the LGA package bottom, and exposed copper pads aligned to LTM8032's θJCbottom = 10.3°C/W specification. The board supports both LGA and BGA variants via footprint compatibility and includes test points for VIN, VOUT, RUN/SS, PGOOD, and ADJ.

Key Specifications

Availability

DC1386B is available at Aetrix Electronics and suitable for industrial embedded developers, automotive battery regulation validation, distributed supply regulation prototyping, and wall transformer replacement designs requiring stable component supply and pre-validated EMC performance.

Supply support for DC1386B 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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and power management semiconductors, serving industrial, automotive, communications, and healthcare markets.

The DC1386B belongs to Analog Devices' µModule evaluation board family, designed to accelerate adoption of integrated power solutions by providing production-ready layouts, thermal models, and EMI test documentation for LTM-series regulators.

FAQ

What is the primary function of the DC1386B evaluation board?

The DC1386B evaluation board is a fully assembled and tested platform for the LTM8032 µModule regulator. It enables engineers to validate 5V/2A power delivery, measure EN55022 Class B radiated emissions, verify thermal performance under load, and debug control signals including RUN/SS, PGOOD, and SYNC. The DC1386B is not a functional power supply out-of-box but a reference design for integrating the LTM8032 into end systems.

Does the DC1386B support both LGA and BGA versions of the LTM8032?

Yes, the DC1386B PCB footprint accommodates both the 71-lead LGA (9mm × 15mm × 2.82mm) and BGA (9mm × 15mm × 3.42mm) packages of the LTM8032. The board includes identical thermal via patterns and pad layouts for both variants, and all critical signals - VIN, VOUT, GND, ADJ, RT, RUN/SS, PGOOD, SYNC, FIN, BIAS, and AUX - are routed to match pin functions defined in the LTM8032 datasheet for each package type.

How is EMI compliance validated on the DC1386B?

The DC1386B implements the LTM8032's integrated EMI filter and follows Linear Technology's recommended layout for EN55022 Class B radiated emissions compliance. Test reports confirm <40dBµV/m margin below the limit at 30–1000MHz using standard CISPR 22 test setup. Conducted emissions require external π-filter on VIN; the DC1386B includes footprints for optional 10µH choke and 10nF X-capacitor. The DC1386B itself does not include those filters - they are user-addable per system-level requirements.

Can the DC1386B be used to evaluate different output voltages beyond 5V?

Yes - the DC1386B supports reconfiguration to other LTM8032 output voltages (0.8V–10V) by replacing the ADJ resistor (RADJ). The board includes solder jumpers and test points enabling quick RADJ value changes; for example, 78.7kΩ yields 3.3V, 27.4kΩ yields 8V. The BIAS connection must be updated accordingly (to AUX for ≥2.8V outputs, or external source for lower outputs), and RT should be adjusted per Table 1 in the LTM8032 datasheet to maintain optimal efficiency - all supported by DC1386B's flexible layout.

What thermal performance can be expected from the DC1386B at full 2A load?

At 24V input and 5V/2A output, the DC1386B achieves ≤32°C temperature rise above ambient (measured at LTM8032 case) with 200LFM airflow, per Analog Devices' published thermal characterization. This aligns with the LTM8032 LGA's θJA = 25.2°C/W and θJCbottom = 10.3°C/W ratings. The board's 4-layer stackup, 2oz copper, and 12 thermal vias under the module ensure heat transfer to internal planes - critical for sustained 2A operation in compact enclosures. No heatsink is required for nominal conditions.