My Inquiry
My Account
Analog Devices Inc. DC1084A-A
- Part No.:
- DC1084A-A
- Manufacturer:
- Analog Devices Inc.
- Package:
- Datasheet:
-
DC1084A-A.pdf
- Description:
- EVAL BOARD FOR LTM4602
- Quantity:
- Payment:
- Shipping:
Inventory:2,810
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTM4602 from Analog Devices (formerly Linear Technology) is a 6A high-efficiency μModule DC/DC step-down power supply integrating controller, MOSFETs, inductor, and support components in a single LGA package. It operates from 4.5V to 20V input, delivers 0.6V–5V output with ±1.5% regulation, achieves up to 92% efficiency, and supports 8A peak current without heatsink or airflow - ideal for point-of-load regulation in space-constrained telecom and server boards.
For engineers reviewing the LTM4602 datasheet, LTM4602 pinout, LTM4602 application, or LTM4602 equivalent, key selection considerations include its 104-pin LGA thermal package, adaptive on-time current-mode control for ultrafast transient response, programmable soft-start via RUN/SS, integrated overvoltage and short-circuit protection, and compatibility with all-ceramic output capacitors.
Technical Context
The LTM4602 implements an adaptive on-time current-mode control architecture with internal 0.6V reference and 100kΩ precision feedback resistor between VOUT and VOSET. Its constant on-time operation enables fast line/load transient response while maintaining stability across wide output capacitance ranges - including full ceramic configurations - without external compensation.
It integrates ultralow RDS(ON) synchronous FETs, a built-in Schottky diode, and thermal management features including junction temperature monitoring (TJMAX = 125°C), θJA = 15°C/W, and thermally enhanced 15mm × 15mm × 2.8mm LGA packaging optimized for bottom-side PCB utilization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 20V DC - supports wide industrial and telecom input rails without external pre-regulation |
| Output Current | 6A continuous, 8A peak - sustains full load at 85°C ambient without forced airflow or heatsink |
| Output Voltage Range | 0.6V to 5.0V - set by single external resistor; limited to ≤80% of VIN for stable operation |
| Regulation Accuracy | ±1.5% total output voltage error - includes line, load, temperature, and initial tolerance over –40°C to 85°C |
| Switching Frequency | Typical 850kHz - adjustable via fADJ pin; higher frequencies enable smaller external components |
| Efficiency | Up to 92% at 12VIN/1.5VOUT/6A - reduces thermal stress and improves system power density |
| Transient Response | ≤30mV droop, ≤25μs settling time for 0A→3A/μs load step - maintains tight regulation during CPU/GPU burst loads |
Pinout & Package
The LTM4602 is housed in a thermally enhanced, RoHS-compliant 104-lead Land Grid Array (LGA) package measuring 15mm × 15mm × 2.8mm, suitable for automated SMT assembly and optimized for bottom-side PCB space utilization.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Bank 1) | Power Input | Primary DC input connection; requires local high-frequency decoupling to PGND |
| PGND (Bank 2) | Power Ground | Common return for input/output power paths; must be low-inductance connection to minimize noise |
| VOUT (Bank 3) | Power Output | Regulated DC output; connects directly to load and bulk/decoupling capacitors |
| VOSET | Feedback Reference Input | Connects internally to VOUT via 100kΩ resistor; sets output voltage with external RSET to SGND |
| RUN/SS | Enable & Soft-Start Control | Pull <0.8V to shut down; internal 1.2μA current charges external capacitor for programmable soft-start timing |
| PGOOD | Power Good Indicator | Open-drain output asserted when VOUT is within ±10% of nominal; used for sequencing and fault monitoring |
| FCB | Forced Continuous Mode | Ground for CCM (low ripple); >0.63V enables DCM (higher light-load efficiency) |
| EXTVCC | External Bias Supply | Accepts 4.7–6V external 5V rail to bypass internal LDO, reducing thermal loss at high VIN |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | Complete buck converter (controller + dual MOSFETs + inductor + compensation) in one surface-mount module |
| All-Ceramic Output Support | Internally compensated loop ensures stability with X5R/X7R ceramic capacitors only - eliminates tantalum/polymer dependency |
| Ultrafast Transient Response | Sub-30mV output deviation and <25μs recovery for 3A/μs load steps - critical for FPGA/CPU core rail integrity |
| Programmable Protection | Defeatable short-circuit latchoff via RUN/SS pull-up; configurable overvoltage shutdown and foldback current limiting |
| Thermal & Space Optimization | 2.8mm profile enables use of unused bottom PCB area; θJC = 6°C/W supports conduction cooling through thermal vias |
Applications
| Telecom Point-of-Load | Servers & Data Centers |
|---|---|
Use Scenario: Regulating 1.2V/1.5V/1.8V core voltages for ASICs and FPGAs on high-density line cards. IC Role / Device Role / Timing Role: Primary non-isolated DC/DC converter delivering tightly regulated, low-noise power with fast transient response. Use Value: Eliminates need for discrete controller + power stage layout; reduces design cycle time and board area by >40% vs. discrete solution. | Use Scenario: Providing 3.3V and 5V auxiliary rails in rack-mounted servers with strict thermal budgets. IC Role / Device Role / Timing Role: High-efficiency, thermally robust power module supporting continuous 6A load under 85°C ambient. Use Value: Achieves 92% efficiency at full load without airflow - enables fanless or reduced-fan designs and lowers total system power consumption. |
| Industrial PLC Controllers | High-Density Embedded Systems |
Use Scenario: Powering real-time I/O modules requiring stable 2.5V/3.3V rails in extended temperature environments (–40°C to 85°C). IC Role / Device Role / Timing Role: Industrial-grade μModule with guaranteed performance over full temperature range and robust fault protection. Use Value: Integrated overvoltage, short-circuit, and thermal protection reduce need for external supervision circuitry and improve system MTBF. | Use Scenario: Delivering compact, low-profile power to edge AI accelerators and multi-core SoCs in portable test equipment. IC Role / Device Role / Timing Role: Space-optimized power solution mounted on bottom side of PCB to preserve top-layer routing channels. Use Value: 15mm × 15mm × 2.8mm LGA footprint frees >225 mm² of top-side real estate - enables denser signal layer layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC/DC µModule applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTM4602HV | Wider 4.5V–28V input range; identical pinout, package, and feature set | Required for 24V industrial or PoE++ systems where standard LTM4602's 20V max VIN is insufficient | Select LTM4602HV when input rail exceeds 20V; otherwise LTM4602 offers optimal cost/performance for ≤20V inputs |
| LTM4622 | Dual 2.5A output channels; 3mm × 4mm LGA; lower current per channel but higher integration density | Suitable for dual-rail applications (e.g., 1.2V + 3.3V) where board space is more constrained than current demand | Choose LTM4622 when needing two independent outputs in minimal area; LTM4602 remains optimal for single 6A rail |
Compared with LTM4602HV and LTM4622, the LTM4602 provides the best balance of single-channel 6A capability, thermal performance, and cost for 4.5–20V input systems - especially where bottom-side mounting and all-ceramic capacitor compatibility are required.
Availability
LTM4602 is available at Aetrix Electronics and suitable for telecom infrastructure, server power delivery, and industrial PLC controllers requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTM4602 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) is a global leader in high-performance analog, mixed-signal, and power management semiconductors.
The LTM4602 belongs to the μModule family - engineered to simplify power system design by integrating complete DC/DC solutions into compact, thermally optimized packages for demanding point-of-load applications.
FAQ
What is the maximum input voltage rating for the LTM4602?
The LTM4602 has an absolute maximum input voltage rating of 20V DC. Operation above this level risks permanent damage. The recommended operating input range is 4.5V to 20V, with guaranteed performance across this span at –40°C to 85°C ambient. For 24V input systems, the pin-compatible LTM4602HV variant (4.5V–28V) should be selected instead of the LTM4602.
Can the LTM4602 operate with only ceramic output capacitors?
Yes, the LTM4602 is fully compatible with all-ceramic output capacitor configurations (X5R/X7R). Its internally optimized loop compensation provides sufficient phase margin and stability - verified across 10μF to 200μF ceramic values - eliminating the need for tantalum or polymer bulk capacitors. This simplifies BOM, improves reliability, and reduces board area.
How is output voltage programmed on the LTM4602?
The LTM4602 output voltage is programmed using a single external resistor (RSET) connected between the VOSET pin and SGND. An internal 100kΩ precision resistor connects VOSET to VOUT, forming a voltage divider with RSET. The formula is VOUT = 0.6V × (100k + RSET) / RSET. Standard values (e.g., 66.5kΩ for 1.5V) are listed in the datasheet Table 1.
Does the LTM4602 require external compensation components?
No, the LTM4602 does not require external compensation components. All loop compensation is implemented internally, enabling stable operation with a wide range of output capacitors - including all-ceramic configurations - without additional resistors or capacitors. This reduces design complexity and validation effort compared to discrete controller solutions.
What thermal derating applies to the LTM4602 at elevated ambient temperatures?
The LTM4602 delivers full 6A output current up to 85°C ambient with no airflow, based on its θJA = 15°C/W rating on a 95mm × 76mm 4-layer PCB. Above 85°C, derating follows the junction temperature limit of 125°C. For example, at 100°C ambient, maximum continuous output current drops to approximately 4.2A assuming same PCB layout and thermal conditions.
DC1084A-A 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, 3.3V, or 5V
- Voltage - Input:
- 6A
- Regulator Topology:
- 4.5V ~ 20V
- Frequency - Switching:
- Buck
- Contents:
- 800kHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- LTM4602
DC1084A-A FAQ
1.How can I place an order for DC1084A-A through Aetrix?
Please submit a Request for Quotation (RFQ) for DC1084A-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 DC1084A-A reliable?
The price and inventory of DC1084A-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DC1084A-A is usually 5 days.
3.What payment methods are accepted for DC1084A-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DC1084A-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DC1084A-A?
DC1084A-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DC1084A-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 DC1084A-A?
For technical support, including DC1084A-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DC1084A-A requirements.
6.How does Aetrix verify that DC1084A-A is sourced from the original manufacturer or authorized distributors?
All DC1084A-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 DC1084A-A meets industry standards.
7.What is the process for return or replacement of DC1084A-A?
All DC1084A-A units undergo pre-shipment inspection (PSI). If there is an issue with DC1084A-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 DC1084A-A part is unused and in its original packaging.
Return procedure for DC1084A-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DC1084A-A Tags
-
DFR0571
DFRobot
-
DFR0379
DFRobot
-
DFR0205
DFRobot
-
1385
Adafruit Industries LLC
-
COM-15208
SparkFun Electronics
-
1944
Adafruit Industries LLC
-
2465
Adafruit Industries LLC
-
DC2468A
Analog Devices Inc.
-
DC2841A
Analog Devices Inc.
-
TPS552892EVM-111
Texas Instruments
-
TPS55289EVM-093
Texas Instruments
-
EPC9158
EPC
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
