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Analog Devices Inc. DC1778A-A
- Part No.:
- DC1778A-A
- Manufacturer:
- Analog Devices Inc.
- Package:
- Datasheet:
-
DC1778A-A.pdf
- Description:
- EVAL BOARD FOR LTC3883
- Quantity:
- Payment:
- Shipping:
Inventory:4,308
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Product details
Overview
DC1778A-A from Analog Devices is a demonstration board for the LTC3883/LTC3883-1 dual-phase, digitally programmable synchronous step-down DC/DC controller IC. It implements a single-phase 1.8V/20A output with PMBus/I²C interface, ±0.5% VOUT accuracy, integrated 16-bit ADC and 12-bit DAC, and AEC-Q100 qualification for automotive power systems.
For engineers reviewing the DC1778A-A datasheet, DC1778A-A pinout, DC1778A-A application, or DC1778A-A equivalent, this board enables rapid validation of digital power management features including telemetry read-back (VIN, IIN, VOUT, IOUT, temperature), programmable soft-start/stop, voltage/current margining, fault logging, and PolyPhase® current sharing up to six phases.
Technical Context
The DC1778A-A implements the LTC3883 in a single-phase configuration using analog current-mode control with digital supervision. It supports wide input (4.5V–24V) and output (0.5V–5.4V) ranges, 250kHz–1MHz switching frequency via SYNC pin or internal oscillator, and auto-calibration of inductor DCR for accurate current sensing.
It integrates high-side and low-side N-channel MOSFET gate drivers (45ns minimum on-time), internal EEPROM with ECC and fault logging, and a 5V linear regulator (LTC3883 variant). The board exposes all PMBus commands via USB-to-I²C bridge and LTPowerPlay™ GUI for real-time configuration and telemetry monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Board Type | Evaluation board for LTC3883/LTC3883-1 controller IC - not an IC itself; provides complete reference design with layout, BOM, and firmware support. |
| Supported IC | LTC3883EUH#PBF or LTC3883IUH#PBF (32-pin 5mm × 5mm QFN); includes jumper-selectable LTC3883-1 option with external 5V supply. |
| Output Capability | Single-phase 1.8V @ 20A typical; configurable for 0.5V–5.4V output using feedback resistors and PMBus VOUT_COMMAND. |
| Digital Interface | PMBus v1.3 compliant over I²C; supports full command set including READ_VIN, READ_IOUT, STORE_DEFAULT_ALL, FAULT_LOG_READ. |
| Telemetry Accuracy | VOUT readback: ±0.5% TUE; IOUT readback: ±1% TUE (with 1mΩ sense resistor); temperature: ±3°C external, ±1°C internal. |
| Power Input | 4.5V–24V DC via terminal block; includes VIN_SNS and IIN_SNS for input telemetry and protection. |
| Software Support | Fully compatible with LTpowerPlay™ GUI - enables real-time parameter tuning, sequencing setup, fault injection, and EEPROM programming. |
Availability
DC1778A-A is available at Aetrix Electronics and suitable for telecom power subsystems, automotive ADAS domain controllers, high-current FPGA/ASIC core supplies, and intelligent energy-efficient server VRMs requiring stable component supply and digital power system management validation.
Supply support for DC1778A-A 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. (now part of Analog Devices / Maxim Integrated) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies.
The DC1778A-A belongs to Analog Devices' Power by Linear™ evaluation platform family, designed specifically to accelerate adoption of digitally managed power solutions in mission-critical and automotive-grade applications.
FAQ
What is the primary function of the DC1778A-A evaluation board?
The DC1778A-A evaluation board is a fully assembled and tested hardware platform for evaluating the LTC3883/LTC3883-1 digitally programmable DC/DC controller. It demonstrates single-phase synchronous buck operation with PMBus-based configuration, telemetry, and fault management - enabling engineers to validate digital power architecture before custom design. The DC1778A-A does not contain its own IC; it hosts the LTC3883 or LTC3883-1 controller as the core device under test.
Does the DC1778A-A support multi-phase operation out of the box?
No, the DC1778A-A is configured as a single-phase 20A buck converter. However, it implements the LTC3883's native PolyPhase® capability - the SHARE_CLK, SYNC, and phase-offset pins are fully accessible and routed to headers, allowing direct connection to additional DC1778A-A boards or other LTC3883-based controllers to build 2–6 phase systems with accurate current sharing. The DC1778A-A schematic and layout follow Analog Devices' multi-phase layout guidelines.
Can the DC1778A-A be used with the LTC3883-1 variant?
Yes, the DC1778A-A supports both LTC3883 and LTC3883-1 variants via jumper configuration (JP1). When using the LTC3883-1, the board disables the internal INTVCC regulator and routes an external 5V supply to the EXTVCC pin - reducing quiescent power loss and enabling higher efficiency in low-load conditions. All PMBus functionality, telemetry, and protection features remain identical between variants on the DC1778A-A.
What software tools are required to configure the DC1778A-A?
The DC1778A-A requires Analog Devices' LTpowerPlay™ software - a free, Windows-based GUI that communicates with the board via USB-to-I²C dongle (included). LTpowerPlay enables full access to all PMBus commands: setting VOUT, IOUT limit, soft-start time, sequencing, OV/UV/OC thresholds, EEPROM store/restore, and real-time telemetry plotting. No firmware development or coding is needed to operate the DC1778A-A.
Is the DC1778A-A qualified for automotive applications?
The DC1778A-A evaluation board itself is not AEC-Q100 qualified; however, it hosts the AEC-Q100 qualified LTC3883IUH#WPBF or LTC3883IUH-1#WPBF controller variants (industrial/automotive grade). When populated with those parts and operated within –40°C to +125°C junction temperature limits, the DC1778A-A serves as a validated platform for developing automotive-compliant power systems - including ADAS ECUs, infotainment, and body control modules.
DC1778A-A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Box
- Product Status:
- Obsolete
- Main Purpose:
- DC/DC, Step Down
- Outputs and Type:
- 1 Non-Isolated Output
- Voltage - Output:
- -
- Current - Output:
- 1.8V
- Voltage - Input:
- 20A
- Regulator Topology:
- 6.5V ~ 24V
- Frequency - Switching:
- Buck
- Contents:
- 425kHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- LTC3883
DC1778A-A FAQ
1.How can I place an order for DC1778A-A through Aetrix?
Please submit a Request for Quotation (RFQ) for DC1778A-A on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DC1778A-A reliable?
The price and inventory of DC1778A-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DC1778A-A is usually 5 days.
3.What payment methods are accepted for DC1778A-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DC1778A-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DC1778A-A?
DC1778A-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DC1778A-A order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DC1778A-A?
For technical support, including DC1778A-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DC1778A-A requirements.
6.How does Aetrix verify that DC1778A-A is sourced from the original manufacturer or authorized distributors?
All DC1778A-A products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DC1778A-A meets industry standards.
7.What is the process for return or replacement of DC1778A-A?
All DC1778A-A units undergo pre-shipment inspection (PSI). If there is an issue with DC1778A-A, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DC1778A-A part is unused and in its original packaging.
Return procedure for DC1778A-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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