Analog Devices Inc. DC1467A

Overview

DC1467A from Analog Devices (formerly Linear Technology) is a demonstration circuit board built around the LTC3614 monolithic synchronous step-down regulator, delivering up to 4A output current with input voltage range 2.25V–5.5V and adjustable output as low as 0.6V; it supports 2.25 MHz fixed, resistor-programmed (up to 4 MHz), or externally synchronized switching, and features Burst Mode™, pulse-skipping, and tracking for power sequencing-used in portable computing and distributed power systems.

For engineers reviewing the DC1467A datasheet, DC1467A pinout, DC1467A application, or DC1467A equivalent, key selection considerations include its 4A capability at 2.25–4 MHz operation, <20 mV_P–P output ripple at 4A, <300 µA quiescent current in sleep mode, programmable soft-start, and jumper-configurable modes (FC/Burst/Pulse-Skip), tracking, DDR termination, and external ITH compensation.

Technical Context

The DC1467A implements the LTC3614's full control architecture-including internal 0.6V reference, frequency programming via RT pin or SYNC input, and selectable operating modes (Forced Continuous, Burst Mode with external clamp, Pulse-Skip). Its feedback loop uses external resistive divider for V_OUT setting and supports tracking via the TRACK pin.

It integrates frequency foldback and current foldback protection, configurable soft-start (internal/external/tracking), and DDR termination enablement. Compensation is implemented via external R_ITH/C_ITH network connected to the ITH pin, with jumper J5 selecting internal or external configuration.

Key Specifications

Availability

DC1467A is available at Aetrix Electronics and suitable for portable computing, distributed power architectures, FPGA/ASIC core supply, and DDR memory termination applications requiring stable component supply and rapid evaluation capability.

Supply support for DC1467A 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 designs high-performance analog, mixed-signal, and power management ICs for precision, reliability, and efficiency across industrial, automotive, and communications markets.

The DC1467A belongs to Linear Technology's demonstration circuit family, engineered to accelerate validation of monolithic DC/DC regulators like the LTC3614 in real-world power delivery scenarios with minimal design overhead.

FAQ

What is the primary function of the DC1467A?

The DC1467A is a fully assembled and tested demonstration circuit board-not an IC-that evaluates the LTC3614 synchronous step-down regulator. It provides immediate hardware validation of 4A, high-frequency (up to 4 MHz), low-voltage regulation with configurable modes, tracking, and DDR termination. The DC1467A itself contains no active silicon beyond the LTC3614 and supporting passives.

Can the DC1467A be used for production power delivery?

No-the DC1467A is a demo board intended for bench evaluation only. While it demonstrates robust performance (e.g., <20 mV_P–P ripple at 4A), its layout, thermal design, and component selection prioritize flexibility and measurement access over long-term reliability or regulatory compliance. For production, designers must implement their own layout based on the LTC3614 datasheet and DC1467A design files.

How do I configure the DC1467A for 1.8V output and Burst Mode operation?

Set JP1 to the 1.8V position (JP2), J1 to "BM" (Burst Mode), J2 to "ON", J3 to "EXT SS", J4 to "OFF", J5 to "EXT", J6 to "Rt", and J7 to "SET". Apply input within 2.25V–5.5V (e.g., 5V), then verify V_OUT = 1.8V ±2% under static load and observe discontinuous switching at light loads. The DC1467A will enter Burst Mode automatically below ~1.6A per LTC3614 specs.

Does the DC1467A support external clock synchronization?

Yes-the DC1467A supports external clock synchronization via the SYNC pin (J6 set to "EXT SYNC"). When enabled, the LTC3614 synchronizes its switching frequency to an external TTL/CMOS clock signal up to 4 MHz, reducing EMI by eliminating beat frequencies. This feature is validated in the DC1467A design and documented in the LTC3614 datasheet referenced by the DC1467A user guide.

Where can I obtain design files for the DC1467A?

Analog Devices provides complete design files-including schematic, PCB layout (Gerber), BOM, and assembly drawings-for the DC1467A upon request. These files are referenced in the DC1467A Quick Start Guide and are available directly from the Analog Devices website under the LTC3614 product page or by contacting their technical support team. The DC1467A design serves as a verified starting point for custom implementations of the LTC3614.