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Analog Devices Inc. DC1740A-B
- Part No.:
- DC1740A-B
- Manufacturer:
- Analog Devices Inc.
- Package:
- Datasheet:
-
DC1740A-B.pdf
- Description:
- EVAL BOARD FOR LTC3880
- Quantity:
- Payment:
- Shipping:
Inventory:2,553
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Product details
Overview
DC1740A-B from Analog Devices is a dual-output PolyPhase® step-down DC/DC controller evaluation board featuring PMBus/I²C digital power system management, ±0.5% output voltage accuracy over temperature, integrated 16-bit ADC telemetry (VIN, IIN, VOUT, IOUT, temperature), and support for up to 6-phase current sharing. It implements analog current-mode control with programmable soft-start, sequencing, margining, OV/UV protection, and frequency synchronization from 250 kHz to 1 MHz - designed for high-current distributed power systems in telecom and datacom infrastructure.
For engineers reviewing the DC1740A-B datasheet, DC1740A-B pinout, DC1740A-B application, or DC1740A-B equivalent, this board enables rapid validation of LTC3880/LTC3880-1 dual-channel digital controllers in real-world 4.5V–24V input, 0.5V–5.4V output power delivery designs - especially where telemetry readback, fault logging, EEPROM-based configuration persistence, and AEC-Q100-compliant operation are required.
Technical Context
The DC1740A-B implements the LTC3880EUJ-1 controller in a fully assembled, tested 40-pin QFN (6mm × 6mm) layout with dual synchronous buck stages, external MOSFET drivers, precision current-sense resistors, and thermal monitoring. It supports both internal INTVCC regulation (LTC3880) and external 5V bias (LTC3880-1), with configurable RCONFIG pins for voltage, frequency, and device address setup.
Telemetry is acquired via the integrated 16-bit ADC and reported over PMBus using LTpowerPlay™ GUI; fault conditions-including output OV/UV, overcurrent, overtemperature (internal/external), and VIN faults-are logged in on-chip EEPROM with ECC. The board provides dedicated GPIOs, ALERT, SHARE_CLK, and WP pins for system-level coordination and write protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Controller IC | LTC3880EUJ-1 or LTC3880IUJ-1 (automotive-grade, –40°C to 125°C) |
| Input Voltage Range | 4.5V to 24V - supports wide industrial and telecom supply rails |
| Output Voltage Range | VOUT0: 0.5V–4.0V; VOUT1: 0.5V–5.4V - independently programmable via PMBus or resistors |
| Switching Frequency | 250 kHz to 1 MHz - synchronized across phases and to external clock via SYNC pin |
| Accuracy | ±0.5% VOUT setpoint accuracy over temperature - enables tight regulation for CPU/GPU core rails |
| Telemetry Resolution | 16-bit VOUT/IOUT, 10-bit VIN/IIN, 0.25°C temperature - enables precise system health monitoring |
| EEPROM | On-chip with ECC and 10-year retention - stores configuration, fault logs, and calibration data without external memory |
Availability
DC1740A-B is available at Aetrix Electronics and suitable for telecom power shelves, datacenter VRMs, and automotive ADAS domain controllers requiring stable component supply, full digital power system management, and AEC-Q100-compliant reference validation.
Supply support for DC1740A-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The DC1740A-B belongs to Analog Devices' Power by Linear™ evaluation platform family, engineered to accelerate design-in of digitally managed multi-phase DC/DC controllers for high-efficiency, high-reliability power systems.
FAQ
What is the primary function of the DC1740A-B evaluation board?
The DC1740A-B is a fully populated evaluation platform for the LTC3880/LTC3880-1 dual-output PolyPhase® step-down DC/DC controllers. It enables engineers to validate digital power system management features - including PMBus configuration, real-time telemetry readback, fault logging, and multi-phase current sharing - without designing custom hardware. The board ships with preloaded firmware and is compatible with LTpowerPlay™ software for graphical configuration and monitoring of DC1740A-B operation.
Does the DC1740A-B support both LTC3880 and LTC3880-1 variants?
Yes, the DC1740A-B supports both the LTC3880 (with integrated 5V INTVCC regulator) and LTC3880-1 (requiring external 5V bias) controller variants. Jumper options and onboard circuitry allow seamless selection between configurations. The board's schematic and layout accommodate the key differences - such as EXTVCC routing and VDD33/VDD25 regulator dependencies - ensuring accurate functional validation of either variant under DC1740A-B test conditions.
Can the DC1740A-B be used for AEC-Q100-compliant automotive qualification?
Yes - the DC1740A-B uses the automotive-grade LTC3880IUJ-1 or LTC3880EUJ-1 controller (–40°C to 125°C junction range), which is AEC-Q100 qualified. The board's thermal design, component selection, and layout follow automotive reliability guidelines. While DC1740A-B itself is not certified, it serves as a validated reference for qualifying end-system power stages meeting AEC-Q100 requirements when paired with appropriate external components and enclosure design.
How is telemetry data accessed from the DC1740A-B?
Telemetry data - including VIN, IIN, VOUT0/1, IOUT0/1, internal/external temperatures, and fault status - is accessed via the PMBus/I²C interface using standard commands (e.g., READ_VIN, READ_IOUT, READ_TEMPERATURE_1). The DC1740A-B connects directly to a PC through an USB-to-I²C adapter (e.g., DC1092B), and all parameters are visualized and logged in real time using Analog Devices' LTpowerPlay™ GUI - no custom firmware or driver development is required to extract DC1740A-B telemetry.
What software tools are required to configure the DC1740A-B?
The DC1740A-B is configured exclusively using Analog Devices' LTpowerPlay™ software - a free, Windows-based GUI that communicates with the board over PMBus. LTpowerPlay™ enables full digital control: setting output voltages, current limits, soft-start timing, sequencing order, OV/UV thresholds, and frequency synchronization. Configuration changes can be applied live or stored in the DC1740A-B's on-board EEPROM for persistent boot-up behavior without host intervention.
DC1740A-B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- PolyPhase®
- Packaging:
- Box
- Product Status:
- Active
- Main Purpose:
- DC/DC, Step Down
- Outputs and Type:
- 2 Non-Isolated Outputs
- Voltage - Output:
- -
- Current - Output:
- 1.2V, 1.5V
- Voltage - Input:
- 60A, 20A
- Regulator Topology:
- 7V ~ 14V
- Frequency - Switching:
- Buck
- Contents:
- 425kHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- LTC3880
DC1740A-B FAQ
1.How can I place an order for DC1740A-B through Aetrix?
Please submit a Request for Quotation (RFQ) for DC1740A-B 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 DC1740A-B reliable?
The price and inventory of DC1740A-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DC1740A-B is usually 5 days.
3.What payment methods are accepted for DC1740A-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DC1740A-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DC1740A-B?
DC1740A-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DC1740A-B 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 DC1740A-B?
For technical support, including DC1740A-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DC1740A-B requirements.
6.How does Aetrix verify that DC1740A-B is sourced from the original manufacturer or authorized distributors?
All DC1740A-B 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 DC1740A-B meets industry standards.
7.What is the process for return or replacement of DC1740A-B?
All DC1740A-B units undergo pre-shipment inspection (PSI). If there is an issue with DC1740A-B, 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 DC1740A-B part is unused and in its original packaging.
Return procedure for DC1740A-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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