Analog Devices Inc. DC2252A-B

Overview

DC2252A-B from Analog Devices (formerly Linear Technology) is a dedicated programming and verification board for the LTC3882EUJ-1 dual-output digital power controller IC. It features a clamshell-style QFN40 socket, onboard EEPROM (Microchip 24LC025), USB-to-PMBus interface support via DC1613A, and factory-default LTpowerPlay project integration for immediate configuration validation in lab environments.

For engineers reviewing the DC2252A-B datasheet, DC2252A-B pinout, DC2252A-B application, or DC2252A-B equivalent, this board enables rapid EEPROM programming, real-time telemetry monitoring (voltage/current/temperature), fault logging verification, and digital power system management setup for PolyPhase® DC/DC designs requiring ±0.5% output accuracy and 250kHz–1.25MHz PWM frequency control.

Technical Context

The DC2252A-B implements a hardware-assisted PMBus/I²C programming interface between a Windows PC running LTpowerPlay and the target LTC3882EUJ-1 IC seated in its 40-pin QFN socket. It provides regulated 3.3V bias to the IC's VDD33 pin via SW1-controlled supply and routes SCL/SDA/ALERTb signals directly to J2 for connection to DC1613A.

Onboard components include differential sense path support (via R36/R37, R31/R32), GPIO-accessible test points (TP1, TP4–TP13), EEPROM-based configuration storage, and shunt-jumper-configurable I²C address selection (ASEL0/ASEL1). No power conversion circuitry is present - the board functions exclusively as a programming and verification interface.

Key Specifications

Availability

DC2252A-B is available at Aetrix Electronics and suitable for digital power design validation, DC/DC controller firmware development, PMBus-based power system commissioning, and production-line EEPROM programming workflows requiring stable component supply and traceable tooling.

Supply support for DC2252A-B 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 acquired Linear Technology in 2017 and maintains full technical and supply chain continuity for all legacy Linear demo circuits, including DC2252A-B. The company specializes in high-performance analog, mixed-signal, and power management solutions.

DC2252A-B belongs to Linear Technology's demonstration circuit (DC) series - purpose-built evaluation tools designed to accelerate adoption of their digital power controllers by providing out-of-box programmability, verified signal integrity, and direct integration with LTpowerPlay ecosystem.

FAQ

What is the primary function of the DC2252A-B?

The DC2252A-B is a dedicated programming and verification board for the LTC3882EUJ-1 digital power controller. It enables engineers to program, read, verify, and debug the internal EEPROM contents of the LTC3882EUJ-1 using LTpowerPlay software and a DC1613A USB-to-PMBus adapter. It does not perform power conversion itself but serves strictly as an interface and configuration tool for the target IC.

Does the DC2252A-B require external power supplies beyond USB?

No - the DC2252A-B draws all operating power from the host PC's USB port. It generates a regulated 3.3V supply for the LTC3882EUJ-1's VDD33 pin via onboard circuitry controlled by SW1. No external DC input, AC adapter, or auxiliary power source is needed to operate the DC2252A-B or program the LTC3882EUJ-1.

Which software and hardware are mandatory to use the DC2252A-B?

Required software: LTpowerPlay v3.0 or later (downloaded from analog.com/ltpowerplay). Required hardware: Windows PC, DC1613A USB-to-I²C/PMBus controller, and a USB cable. The DC2252A-B ships with an LTC3882EUJ-1 pre-installed in its socket and includes the factory-default project file for immediate verification.

Can the DC2252A-B be used with other LTC388x family parts?

The DC2252A-B is specifically designed and validated for the LTC3882EUJ-1 variant. While the physical socket accommodates other 40-pin QFN variants in the LTC3882 family (e.g., LTC3882-1), functional compatibility depends on register map alignment, EEPROM structure, and PMBus command support. Use with non-LTC3882EUJ-1 parts is not guaranteed and requires independent validation.

What happens if the LTC3882EUJ-1 is removed or replaced on the DC2252A-B?

Before removing or inserting the LTC3882EUJ-1, the USB cable must be disconnected from the DC1613A to prevent bus contention or I/O damage. The socket uses a clamshell mechanism requiring tweezers or vacuum pickup for safe handling. Replacing the IC resets EEPROM state to factory defaults unless a custom project file has been previously saved and reloaded into the new device.