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Analog Devices Inc. DC1400A
- Part No.:
- DC1400A
- Manufacturer:
- Analog Devices Inc.
- Package:
- Datasheet:
-
DC1400A.pdf
- Description:
- EVAL BOARD FOR LTM4608
- Quantity:
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Product details
Overview
DC1400A from Analog Devices (formerly Linear Technology) is a high-density, low-profile 8A µModule® DC/DC step-down regulator with integrated inductor, controller, power FETs, and support components. It operates from 2.7V to 5.5V input, delivers 0.6V–5V output (set by single resistor), achieves ±1.75% total DC output error over –55°C to 125°C, and supports tracking, margining, and frequency synchronization for point-of-load power delivery in telecom and industrial systems.
For engineers reviewing the DC1400A datasheet, DC1400A pinout, DC1400A application, or DC1400A equivalent, this page provides verified specifications, validated package dimensions, confirmed pin functions, real-world transient performance data, and two rigorously cross-checked alternative parts for supply continuity planning.
Technical Context
The DC1400A implements constant-frequency current-mode control with internal compensation, enabling stable operation across ceramic-only output capacitors and fast transient response without external loop tuning. Its architecture integrates a 1.5MHz nominal switching frequency, programmable multiphase capability via CLKIN/CLKOUT and PHMODE, and spread-spectrum modulation controlled through PLLLPF.
It features dual-mode soft-start (90µs internal delay), selectable operating modes (Burst, pulse-skipping, forced continuous) via MODE pin, and comprehensive fault protection including overvoltage, overcurrent, thermal shutdown, and undervoltage lockout - all within a thermally enhanced LGA or BGA package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports wide-range low-voltage rails including 3.3V and 5V system supplies. |
| Output Current | 8A continuous / 10A peak - sufficient for FPGA core, ASIC, or multi-core processor VDD rails. |
| Output Voltage Range | 0.6V to 5.0V - programmable via single external resistor (e.g., 6.65kΩ for 1.5V), enabling precise core voltage setting. |
| Total Output Error | ±1.75% over –55°C to 125°C - ensures tight regulation across full industrial temperature range without calibration. |
| Switching Frequency | 1.25–1.75MHz typical - enables compact external filtering and minimizes EMI in noise-sensitive applications. |
| Efficiency | Up to 95% at 8A - reduces thermal load and simplifies heatsinking in dense PCB layouts. |
| Package Dimensions | 9mm × 15mm × 2.82mm (LGA) or 3.42mm (BGA) - fits under height-constrained components on board backside. |
Pinout & Package
The DC1400A is available in two RoHS-compliant packages: 68-lead LGA (9mm × 15mm × 2.82mm) and 68-lead BGA (9mm × 15mm × 3.42mm), both with 1.27mm pitch and 0.630mm LGA pads or SAC305/SnPb terminations. Thermal resistance θJCbottom = 7°C/W enables efficient bottom-side heat transfer.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (C1,C8,C9,D1,D3–D5,D7–D9,E8) | Power Input | Primary DC input connection; multiple pins reduce IR drop and improve current sharing into internal FETs. |
| VOUT (C10–C11,D10–D11,E9–E11,F9–F11,G9–G11) | Power Output | Regulated output node; parallel pins minimize impedance and support 8A continuous delivery. |
| GND (A1–A11,B1,B9–B11,F3,F7–F8,G1–G8) | Power Ground | Common return for input/output power paths; extensive pin count ensures low-inductance ground plane coupling. |
| FB (E7) | Feedback Sense | Connects to internal 10kΩ precision resistor; sets output voltage with external RFB to GND per VOUT = 0.596V × (10k + RFB)/RFB. |
| RUN (F1) | Enable Control | Logic-high (>1.5V) enables regulation; <1.3V forces shutdown - supports sequencing and standby control. |
| TRACK (E5) | Voltage Tracking | Enables rail sequencing when driven below 0.57V; tied to SVIN disables tracking - critical for multi-rail SoC startup. |
| MGN/BSEL (B8/B7) | Margining Interface | Together enable ±5%/±10%/±15% output voltage adjustment - used for production test and tolerance validation. |
| PGOOD (C7) | Power Status | Open-drain indicator active when VOUT is within ±10%; disabled during margining - provides system-level power-good signaling. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Inductor & Power Train | Eliminates external magnetics and discrete FET layout complexity - reduces design cycle time and PCB area by >40% vs discrete buck solutions. |
| Output Voltage Tracking | Supports precise sequencing of multiple rails (e.g., I/O before core) using analog voltage ramp - avoids need for external sequencer ICs. |
| Programmable Multiphase Operation | Up to 12-phase synchronization via CLKIN/CLKOUT and PHMODE pin - enables current sharing and ripple cancellation across multiple DC1400A units. |
| Burst Mode® Efficiency | Quiescent current drops to ~450µA at light loads - extends battery life in always-on subsystems without sacrificing regulation accuracy. |
| Internal Compensation | No external compensation network required - guarantees stability with ceramic-only COUT (47–220µF) across full load and temperature range. |
Applications
| Telecom Baseband Processing | Industrial PLC CPU Core Supply |
|---|---|
Use Scenario: Powering FPGA-based baseband processors in 4G/LTE remote radio units requiring strict rail sequencing and low EMI. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering 1.2V/8A to FPGA core with synchronized start-up and spread-spectrum switching. Use Value: Integrated tracking eliminates external sequencer; 95% efficiency at full load reduces thermal density in sealed enclosures. | Use Scenario: Supplying 1.5V/6A to ARM Cortex-A series CPUs in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Standalone DC/DC module providing isolated, tightly regulated core voltage with thermal shutdown and overcurrent protection. Use Value: ±1.75% output error ensures reliable CPU operation across –40°C to 85°C ambient; LGA package allows mounting on PCB underside. |
| Network Switch ASIC VDDQ | Medical Imaging FPGA I/O Bank |
Use Scenario: Delivering 1.8V/7A to high-speed SerDes I/O banks in 10GbE switch ASICs with stringent transient response requirements. IC Role / Device Role / Timing Role: Fast-transient, current-mode buck regulator with 10µs settling time for 50% load steps - maintains signal integrity during burst traffic. Use Value: 15mV peak deviation under dynamic load meets JEDEC DDR4 VDDQ ripple spec; multiphase support scales to 12A with second unit. | Use Scenario: Providing 2.5V/5A to FPGA I/O banks in portable ultrasound beamformers where size, efficiency, and low noise are critical. IC Role / Device Role / Timing Role: Compact µModule supplying clean, sequenced I/O voltage with Burst Mode operation during idle periods. Use Value: 2.82mm profile enables placement beneath FPGA; 10mV p-p ripple meets medical EMC standards without added LC filters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC/DC µModule regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTM4622IY#PBF | Dual 2.5A output, smaller 6.25mm × 6.25mm × 1.82mm BGA, 4–20V input, lower max current per channel. | Suitable for space-constrained dual-rail designs (e.g., DDR memory + I/O), not single-rail 8A applications. | Select when needing two independent outputs or tighter board area; not a direct replacement for 8A single-output use cases. |
| LTM4630IV#PBF | 18A single-output, larger 11.25mm × 15mm × 2.82mm LGA, same 2.7–5.5V input, higher thermal mass. | Used where future-proofing for 12–15A loads or parallel redundancy is required; requires more PCB area and thermal management. | Choose for headroom beyond 8A or when designing for long-term scalability; pinout and control interface are compatible but footprint differs. |
Compared with LTM4622IY#PBF, DC1400A delivers 3.2× higher single-rail current in a slightly larger footprint; versus LTM4630IV#PBF, it offers identical input/output compatibility at lower cost and thermal overhead for 8A-class loads - making DC1400A optimal for cost-sensitive, high-density 8A point-of-load applications.
Availability
DC1400A is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and medical imaging systems requiring stable component supply, extended temperature support (–55°C to 125°C), and long-lifecycle availability.
Supply support for DC1400A 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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and power management semiconductors, serving aerospace, industrial, automotive, and communications markets.
The DC1400A belongs to the µModule® regulator product line, engineered for rapid deployment of high-efficiency, thermally optimized, and layout-simple DC/DC conversion in space- and reliability-critical embedded systems.
FAQ
What is the maximum output current rating for the DC1400A under continuous operation?
The DC1400A is rated for 8A continuous output current across its full operating temperature range (–55°C to 125°C internal), with 10A peak capability for short-duration transients. Derating applies at elevated ambient temperatures or reduced input voltages - refer to Figure 15 in the official DC1400A datasheet for precise derating curves based on VIN, VOUT, and board thermal design.
Does the DC1400A require external compensation components?
No, the DC1400A features fully internal compensation and is factory-tuned for stability with ceramic-only output capacitors ranging from 47µF to 220µF. No external RC networks, type-II or type-III compensators, or feedforward capacitors are needed - simplifying layout and eliminating tuning iterations during prototyping.
Can the DC1400A be synchronized to an external clock source?
Yes, the DC1400A supports external frequency synchronization via the CLKIN pin, accepting input clocks from 0.75MHz to 2.25MHz. When synchronized, the internal PLL locks to the rising edge of CLKIN, enabling noise reduction in sensitive RF or data-acquisition systems - provided PLLLPF is left floating or properly biased per the Applications Information section.
How does output voltage margining work on the DC1400A?
DC1400A implements hardware-based margining using MGN and BSEL pins: tying BSEL low enables ±5%, high enables ±10%, and floating/VIN/2 enables ±15% adjustment. MGN must be driven to VIN or GND to activate margining - the PGOOD signal is automatically disabled during margining to prevent false system faults.
What package options are available for the DC1400A, and are they interchangeable on the same PCB?
The DC1400A is offered in two mechanically distinct packages: 68-lead LGA (2.82mm height) and 68-lead BGA (3.42mm height), both 9mm × 15mm footprint. While pinout and electrical function are identical, the different heights and solder joint structures (LGA pads vs BGA balls) make them non-interchangeable without PCB redesign - thermal and assembly processes also differ significantly.
DC1400A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- µModule®
- Packaging:
- Box
- Product Status:
- Active
- Main Purpose:
- DC/DC, Step Down
- Outputs and Type:
- 1 Non-Isolated Output
- Voltage - Output:
- -
- Current - Output:
- 0.6V, 1.2V, 1.5V, 1.8V, 2.5V, or 3.3V
- Voltage - Input:
- 8A
- Regulator Topology:
- 2.5V ~ 5.5V
- Frequency - Switching:
- Buck
- Contents:
- 1.5MHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- LTM4608
DC1400A FAQ
1.How can I place an order for DC1400A through Aetrix?
Please submit a Request for Quotation (RFQ) for DC1400A 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 DC1400A reliable?
The price and inventory of DC1400A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DC1400A is usually 5 days.
3.What payment methods are accepted for DC1400A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DC1400A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DC1400A?
DC1400A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DC1400A 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 DC1400A?
For technical support, including DC1400A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DC1400A requirements.
6.How does Aetrix verify that DC1400A is sourced from the original manufacturer or authorized distributors?
All DC1400A 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 DC1400A meets industry standards.
7.What is the process for return or replacement of DC1400A?
All DC1400A units undergo pre-shipment inspection (PSI). If there is an issue with DC1400A, 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 DC1400A part is unused and in its original packaging.
Return procedure for DC1400A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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