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Analog Devices Inc. LTC3886EUKG#TRPBF
- Part No.:
- LTC3886EUKG#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 52-WFQFN, 46 Leads, Exposed Pad
- Datasheet:
-
LTC3886EUKG#TRPBF.pdf
- Description:
- IC REG CTRLR BUCK PMBUS 52QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,636
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Product details
Overview
LTC3886EUKG#TRPBF from Analog Devices is a dual-output, 60V input PolyPhase® synchronous step-down DC/DC controller with PMBus/I²C digital power system management. It delivers two independent outputs (0.5–13.8V each), supports up to 6-phase current sharing, integrates 16-bit ADC and 12-bit DAC telemetry, and operates across –40°C to 125°C for telecom and industrial point-of-load systems.
For engineers reviewing the LTC3886EUKG#TRPBF datasheet, LTC3886EUKG#TRPBF pinout, LTC3886EUKG#TRPBF application, or LTC3886EUKG#TRPBF equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives, and supply-ready availability details - all grounded in Analog Devices' Rev G datasheet and LTpowerPlay® ecosystem support.
Technical Context
The LTC3886EUKG#TRPBF implements constant-frequency current-mode control per channel, with programmable loop compensation via internal 5-bit RITHR resistor DACs and external ITH/ITHR pins. Its dual-channel architecture enables independent soft-start, sequencing, margining, and fault management (OV/UV/OC/OT) with dedicated FAULT0/FAULT1 and PGOOD0/PGOOD1 signals.
It embeds a full PMBus 1.3-compliant interface with EEPROM-backed configuration storage (10-year retention), CRC-protected telemetry (VIN, VOUT, IOUT, temperature), and synchronized PolyPhase® operation up to 750kHz using the SHARE_CLK and SYNC pins. The EXTVCC pin accepts 4.5–14V to power the controller independently of VIN, improving efficiency and thermal performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 4.5V to 60V - supports wide-input industrial, telecom, and battery-backed systems without external pre-regulation. |
| VOUT Range (per channel) | 0.5V to 13.8V - covers core logic, FPGA, ASIC, and intermediate bus voltages with ±0.5% set-point accuracy over temperature. |
| Switching Frequency | 100kHz to 750kHz - adjustable via resistor or PMBus; enables optimization of size, efficiency, and transient response. |
| PolyPhase Support | Up to 6 phases - achieves precise current sharing (<±1%) across multiple controllers for high-current (>100A) loads. |
| ADC/DAC Resolution | 16-bit ADC / 12-bit DAC - enables high-fidelity telemetry readback (e.g., 250µV LSB for VOUT) and fine-grained digital servo control. |
| EEPROM Retention | 10 years at TJ ≤ 125°C - stores user configurations, fault logs, and calibration data without volatile backup. |
| Operating Temperature | –40°C to 125°C junction - qualified for harsh industrial and telecom environments with integrated thermal sensing and protection. |
Pinout & Package
Package: 52-lead (7mm × 8mm) QFN with exposed thermal pad (Pin 53 = GND). RoHS-compliant, lead-free, thermally enhanced for high-power density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TG0/TG1 | Top gate drivers | Drive high-side N-MOSFET gates with 30ns rise/fall time; withstand 71V transient for 60V input designs. |
| BG0/BG1 | Bottom gate drivers | Drive low-side N-MOSFET gates with 20ns rise/fall time; enable synchronous rectification and high efficiency. |
| VSENSE0+/VSENSE0– VSENSE1+/VSENSE1– | Differential output voltage sense inputs | Enable Kelvin sensing for ±0.5% regulation accuracy; reject PCB trace IR drop and noise. |
| ISENSE0+/ISENSE0– ISENSE1+/ISENSE1– | Differential current sense inputs | Support DCR or shunt-based sensing; 16-bit ADC resolves down to 15.26µV LSB for precise IOUT telemetry. |
| EXTVCC | External bias supply input | Accepts 4.5–14V to power INTVCC regulator - reduces die heating and improves efficiency vs. VIN-derived bias. |
| SDA/SCL/ALERT | PMBus I²C interface | Standard 400kHz open-drain bus with CRC, timeout protection, and ALERT assertion on fault events. |
| PGOOD0/PGOOD1 | Power-good status outputs | Open-drain indicators with 60µs digital filtering - signal stable regulation per channel for downstream sequencing. |
| FAULT0/FAULT1 | Dedicated fault outputs | Assert on OV/UV/OC/OT events with 35–100µs propagation; support hardware-level fault isolation per rail. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent digital power rails | Each output fully configurable via PMBus - separate voltage, current limit, soft-start, sequencing, and margining settings stored in EEPROM. |
| Integrated telemetry engine | Simultaneous real-time readback of VIN, IIN, VOUT0/VOUT1, IOUT0/IOUT1, internal/external temperature - no external ADC required. |
| Programmable analog loop compensation | 5-bit RITHR DAC + external ITH/ITHR pins allow digital tuning of error amplifier transconductance (1.0–5.76 mmho) without changing components. |
| Robust fault management | Configurable response per fault type (e.g., latch-off, retry, ignore); fault logging with timestamped history stored in EEPROM. |
| LTpowerPlay® GUI integration | Real-time oscilloscope-style waveform capture, loop analysis, and one-click configuration store/restore - accelerates bring-up and validation. |
Applications
| Telecom Point-of-Load | Data Center Voltage Regulator Module (VRM) |
|---|---|
Use Scenario: Powering 12V/5V rails for baseband processing units in 4G/5G macro base stations with strict thermal and telemetry requirements. IC Role / Device Role / Timing Role: Dual-output controller managing independent 12V (RF front-end) and 5V (FPGA core) supplies with phase-synchronized switching and shared thermal monitoring. Use Value: ±0.5% VOUT accuracy and 16-bit telemetry ensure compliance with ITU-T G.984.2 power integrity specs while reducing validation time via PMBus log export. |
Use Scenario: High-current CPU/GPU VRM in edge server platforms requiring dynamic voltage scaling and real-time health monitoring. IC Role / Device Role / Timing Role: Master controller in 4-phase configuration (with additional LTC3886s) delivering >100A at 0.8V with <±1% current sharing and adaptive frequency scaling. Use Value: Integrated 12-bit DAC enables precise digital margining (±2.5%) for burn-in testing; EEPROM-stored profiles simplify firmware updates across production batches. |
| Industrial PLC Power Management | Storage System Intermediate Bus Converter |
Use Scenario: Providing isolated 24V and 5V rails in programmable logic controllers operating in extended temperature (-40°C to 85°C ambient). IC Role / Device Role / Timing Role: Dual-channel controller with independent RUN0/RUN1 enables staggered startup and watchdog-triggered shutdown for safety-critical I/O modules. Use Value: EXTVCC biasing allows use of 24V auxiliary supply to power LTC3886EUKG#TRPBF - eliminates need for discrete LDO and improves system efficiency by 3–5%. |
Use Scenario: Converting 48V backplane to 12V/5V for SSD/NVMe drive arrays in enterprise storage enclosures with fanless thermal design. IC Role / Device Role / Timing Role: Primary controller managing 12V main rail and 5V auxiliary rail with coordinated soft-start and fault propagation to system manager via ALERT pin. Use Value: Internal temperature sensor + external TSNS0/TSNS1 inputs enable dual-point thermal mapping - critical for predictive thermal throttling in dense 2U chassis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output digital power controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3887IUH#TRPBF | Single-output, higher VIN (80V), includes integrated MOSFET drivers with 1.5A peak sink/source - no external gate driver needed. | Best for space-constrained single-rail designs where board area is premium and gate drive strength must be maximized. | Select when only one regulated output is required and 80V input capability or stronger gate drive is critical; not a drop-in replacement for dual-rail use cases. |
| TPS546D24RTQR | TI's 60V dual-output PMBus controller with integrated FETs; lower max VOUT (5.5V), no EXTVCC pin, and fixed 12-bit telemetry resolution. | Suitable for cost-sensitive, lower-voltage (<5.5V) applications like networking switches where integrated FETs reduce BOM count. | Choose when integrated power stages are preferred and VOUT ≤ 5.5V suffices; lacks LTC3886EUKG#TRPBF's 13.8V capability, EXTVCC flexibility, and 16-bit ADC fidelity. |
Compared with LTC3886EUKG#TRPBF, LTC3887IUH#TRPBF trades dual-rail flexibility for higher input voltage and integrated drivers, while TPS546D24RTQR sacrifices voltage range and telemetry precision to integrate power stages - making LTC3886EUKG#TRPBF optimal for high-accuracy, dual-rail, thermally demanding 60V systems.
Availability
LTC3886EUKG#TRPBF is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and data center VRMs requiring stable component supply, long-term lifecycle assurance, and full PMBus ecosystem compatibility.
Supply support for LTC3886EUKG#TRPBF 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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The LTC3886 belongs to ADI's Power by Linear™ digital power management product line, designed specifically for high-reliability, telemetry-rich, multi-rail DC/DC conversion in mission-critical infrastructure equipment.
FAQ
What is the maximum supported switching frequency for the LTC3886EUKG#TRPBF?
The LTC3886EUKG#TRPBF supports a programmable switching frequency range of 100kHz to 750kHz. This is set either by an external resistor on the FREQ_CFG pin or digitally via the PMBus FREQUENCY_SWITCH command. Operation at 750kHz enables compact magnetics and faster transient response but requires careful attention to gate drive strength and layout parasitics - confirmed in the Rev G datasheet Section "Switching Frequency and Phase".
Does the LTC3886EUKG#TRPBF support independent power sequencing between its two outputs?
Yes, the LTC3886EUKG#TRPBF supports fully independent time-based and event-based sequencing for VOUT0 and VOUT1. Parameters including ON_DELAY, OFF_DELAY, RAMP_UP_TIME, and RAMP_DOWN_TIME are individually configurable per channel via PMBus commands (e.g., ON_OFF_CONFIG, VOUT_COMMAND) and stored in EEPROM. This enables complex power-up/down sequences required in FPGA and ASIC applications - detailed in Sections "Time-Based Sequencing" and "Event-Based Sequencing" of the datasheet.
Can the LTC3886EUKG#TRPBF operate without an external EEPROM?
Yes, the LTC3886EUKG#TRPBF contains internal EEPROM with ECC and 10-year data retention at ≤125°C junction temperature. All configuration, telemetry logs, and calibration data are stored on-chip - no external memory is required. The internal EEPROM supports STORE_USER_ALL and RESTORE_USER_ALL commands for nonvolatile save/restore, eliminating BOM cost and board space for external memory - verified in the "EEPROM Characteristics" table (Page 8) and "EEPROM Memory Commands" section (Page 110).
What is the purpose of the EXTVCC pin on the LTC3886EUKG#TRPBF?
The EXTVCC pin on the LTC3886EUKG#TRPBF accepts an external 4.5V–14V supply to power the INTVCC regulator, decoupling controller bias from the high-voltage VIN rail. This reduces die self-heating, improves efficiency (especially at high VIN), and enables operation when VIN is below 6V (where INTVCC must be tied to VIN per Note 12). The switchover threshold is 4.7V ±0.25V with 80mV hysteresis - specified in the "INTVCC Regulator" table (Page 7).
How does the LTC3886EUKG#TRPBF handle overtemperature faults?
The LTC3886EUKG#TRPBF monitors both internal junction temperature (via on-die sensor) and external temperature (via TSNS0/TSNS1 pins). An internal overtemperature fault triggers automatic shutdown if TJ exceeds 150°C (typical), with recovery after cooldown. External OT/UT faults are configurable via PMBus thresholds and can assert FAULT0/FAULT1 or trigger latched shutdown. Fault events are logged with timestamps in internal EEPROM - documented in Sections "Internal Overtemperature Fault/Warn Response" and "External Overtemperature and Undertemperature Fault Response" (Pages 28–29).
LTC3886EUKG#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- PolyPhase®
- Package/Case:
- 52-WFQFN, 46 Leads, Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Type:
- Transistor Driver
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Number of Outputs:
- 2
- Output Phases:
- 2
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 60V
- Frequency - Switching:
- 100kHz ~ 750kHz
- Duty Cycle (Max):
- -
- Synchronous Rectifier:
- Yes
- Clock Sync:
- Yes
- Serial Interfaces:
- I2C, PMBus
- Control Features:
- Enable, Frequency Control, Phase Control, Power Good
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-QFN (7x8)
LTC3886EUKG#TRPBF FAQ
1.How can I place an order for LTC3886EUKG#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3886EUKG#TRPBF 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 LTC3886EUKG#TRPBF reliable?
The price and inventory of LTC3886EUKG#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3886EUKG#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3886EUKG#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3886EUKG#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3886EUKG#TRPBF?
LTC3886EUKG#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3886EUKG#TRPBF 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 LTC3886EUKG#TRPBF?
For technical support, including LTC3886EUKG#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3886EUKG#TRPBF requirements.
6.How does Aetrix verify that LTC3886EUKG#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3886EUKG#TRPBF 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 LTC3886EUKG#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3886EUKG#TRPBF?
All LTC3886EUKG#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3886EUKG#TRPBF, 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 LTC3886EUKG#TRPBF part is unused and in its original packaging.
Return procedure for LTC3886EUKG#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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