Analog Devices Inc. DC1934A

Overview

DC1934A Demo Board, No EMI Filter from Analog Devices is a fully assembled and tested evaluation platform for the LTM8053/LTM8053-1 40V input, 3.5A continuous Silent Switcher µModule regulator. It supports output voltages from 0.97V to 15V (or –3.3V to –15V), operates across 3.4V–40V input, delivers up to 3.5A at 12VIN/5VOUT with 95% peak efficiency, and features integrated EMI reduction enabling CISPR 32 Class B compliance without external filters.

For engineers reviewing the DC1934A datasheet, DC1934A pinout, DC1934A application, or DC1934A equivalent, this demo board enables rapid validation of LTM8053-based power designs-especially for automotive battery regulation, portable product power, distributed supply regulation, and industrial supplies-without requiring custom PCB layout or component selection.

Technical Context

The DC1934A implements the LTM8053 µModule in a fixed 5V output configuration (7V–40V input), using a 40.2kΩ RT resistor to set 1MHz switching frequency and 60.4kΩ feedback divider. It omits the EMI filter components (C7, L1) per its "No EMI Filter" designation, exposing raw switch-node behavior for noise characterization and filter design iteration.

Thermal performance is validated per DC1934A-specific derating curves (Figures G48–G63), showing 3.5A continuous output at 85°C ambient with 12VIN/5VOUT on the demo board layout, leveraging the LTM8053's thermally enhanced 48-ball BGA package and bottom-side thermal pad.

Key Specifications

Availability

DC1934A is available at Aetrix Electronics and suitable for automotive battery regulation, portable product power, and industrial supply design requiring stable component supply, pre-validated thermal performance, and fast-turn evaluation of Silent Switcher µModule regulators.

Supply support for DC1934A 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 semiconductors, serving precision instrumentation, industrial automation, communications, and power management markets.

The DC1934A belongs to Analog Devices' µModule regulator evaluation platform family, designed to accelerate adoption of integrated power solutions by providing production-ready layouts, validated thermal performance, and comprehensive test data for LTM8053/LTM8053-1 step-down regulators.

FAQ

What is the primary function of the DC1934A demo board?

The DC1934A demo board is a ready-to-use evaluation platform for the LTM8053/LTM8053-1 µModule regulator. It provides a pre-assembled, tested circuit that demonstrates 5V output operation from 7V–40V input, validates thermal derating per actual board layout, and enables direct measurement of EMI emissions without external filtering-specifically supporting design verification and noise analysis workflows for DC1934A users.

Does the DC1934A include an EMI filter?

No, the DC1934A Demo Board, No EMI Filter is explicitly configured without EMI filtering components: C7 is left unpopulated (open) and L1 is shorted. This configuration exposes raw switch-node waveforms and radiated emissions, allowing engineers to characterize baseline noise and develop custom EMI filter solutions-making DC1934A ideal for EMI-sensitive applications where filter optimization is required.

What output voltage does the DC1934A deliver, and is it adjustable?

The DC1934A is factory-configured for a fixed 5V output using a 60.4kΩ feedback resistor (RFB), delivering 5V ±1% under load. While the underlying LTM8053 supports 0.97V–15V programmability, the DC1934A board itself is not user-adjustable out-of-box; changing VOUT requires modifying the RFB network and validating stability-so DC1934A serves as a reference for 5V implementation, not a general-purpose adjustable supply.

How is thermal performance characterized on the DC1934A?

Thermal performance of the DC1934A is documented in Figures G48–G63 of the LTM8053 datasheet, which present ambient temperature vs. maximum load current derating curves *specific to the DC1934A board layout*. These curves show 3.5A continuous output at 85°C ambient with 12VIN/5VOUT and zero airflow-enabling accurate system-level thermal budgeting without extrapolation from generic package data.

Can the DC1934A be used to evaluate both LTM8053 and LTM8053-1 variants?

Yes, the DC1934A supports evaluation of both LTM8053 and LTM8053-1 µModules, as confirmed by Analog Devices' documentation referencing "LTM8053/LTM8053-1" throughout the DC1934A-related figures and text. Key differences-such as SYNC pin behavior (pulse-skipping vs. forced continuous mode) and SHARE/VC pin functionality-are preserved on the board, allowing side-by-side comparison of operating modes and performance trade-offs for DC1934A users.