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Analog Devices Inc. LTC3886EUKG-1#TRPBF
- Part No.:
- LTC3886EUKG-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 52-WFQFN, 46 Leads, Exposed Pad
- Datasheet:
-
LTC3886EUKG-1#TRPBF.pdf
- Description:
- 60V 2X OUT BUCK CNTR W/ DIG PWR
- Quantity:
- Payment:
- Shipping:
Inventory:1,625
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Product details
Overview
LTC3886EUKG-1#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 and 1.0–6.6V), supports up to 6-phase current sharing, integrates 16-bit ADC/12-bit DAC telemetry, and features internal EEPROM with ECC for fault logging and configuration storage - deployed in telecom/datacom power systems requiring precise voltage sequencing and real-time telemetry.
For engineers reviewing the LTC3886EUKG-1#TRPBF datasheet, LTC3886EUKG-1#TRPBF pinout, LTC3886EUKG-1#TRPBF application, or LTC3886EUKG-1#TRPBF equivalent, key selection considerations include its dual-channel analog current-mode control architecture, ±0.5% output voltage accuracy over temperature, programmable loop compensation via RITHR pins, integrated high-side current sense amplifier, and support for sequenced off discharge of large output capacitors.
Technical Context
The LTC3886EUKG-1#TRPBF implements constant-frequency current-mode control with independent PWM loops per channel, enabling accurate PolyPhase current sharing across up to six phases (100–750 kHz). Its digital interface supports full PMBus v1.3 compliance, including READ_VIN, READ_VOUT, READ_IOUT, READ_TEMPERATURE, and fault reporting registers.
It integrates an internal 5V INTVCC regulator (4.8–5.2V) and 3.3V/2.5V LDOs, accepts EXTVCC up to 14V for improved efficiency, and includes dedicated FAULT0/FAULT1 pins with configurable response timing (e.g., 35 µs OV propagation delay). The device supports both resistor-based and digital configuration of switching frequency, output voltage, device address, and phase assignment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 60V - supports wide-range industrial and telecom inputs without external pre-regulation |
| VOUT0 Range | 0.5V to 13.8V - programmable via 12-bit resolution (4 mV LSB) for primary rail generation |
| VOUT1 Range | 1.0V to 6.6V - 12-bit resolution (2 mV LSB) optimized for secondary or core logic rails |
| Output Voltage Accuracy | ±0.5% over temperature - enables tight regulation for FPGA, ASIC, and CPU core supplies |
| Telemetry Resolution | 16-bit ADC for VOUT/IOUT, 10-bit for VIN/temperature - provides high-fidelity real-time monitoring |
| EEPROM Retention | 10 years at TJ < 125°C - ensures reliable storage of configuration, fault logs, and calibration data |
| Switching Frequency | 100 kHz to 750 kHz - digitally or resistor-programmable for optimal efficiency vs. size trade-offs |
| PolyPhase Support | Up to 6 phases - enables high-current (>100A) designs with balanced thermal distribution |
Pinout & Package
Package: 52-lead (7 mm × 8 mm) QFN with exposed GND pad (Pin 53), rated for –40°C to +125°C junction temperature (θJA = 31°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TG0 / TG1 | Top gate drivers | Drive external N-channel MOSFET gates with 30 ns rise/fall time; withstands 71V transients |
| BG0 / BG1 | Bottom gate drivers | Complementary low-side drive with 20 ns transition times; supports synchronous rectification |
| VSENSE0+/– / VSENSE1+/– | Differential output voltage sense | High-impedance inputs (250/315 µA bias) for Kelvin-connected feedback; enables ±0.5% accuracy |
| ISENSE0+/– / ISENSE1+/– | Differential current sense inputs | Supports DCR or discrete shunt sensing; 10–100 mV full-scale range with 16-bit readback resolution |
| PGOOD0 / PGOOD1 | Power good indicators | Open-drain outputs with 60 µs digital filtering; assert after soft-start and OV/UV validation |
| FAULT0 / FAULT1 | Fault reporting outputs | Configurable open-drain signals for per-channel overvoltage, undervoltage, overcurrent, or thermal faults |
| SDA / SCL | PMBus/I²C interface | 400 kHz compliant bidirectional bus with 10 pF input capacitance and 0.4 V low-level threshold |
| EXTVCC | External bias supply input | Accepts 5.5–14V to power internal regulators - improves efficiency and reduces die temperature vs. VIN-only operation |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent power good and fault signaling | Enables per-rail health monitoring and autonomous system-level fault containment |
| Integrated 16-bit ADC and 12-bit DAC | Provides high-resolution telemetry (VIN, VOUT, IOUT, temperature) and closed-loop digital servo control |
| Sequenced off (LTC3886-1 variant) | Actively discharges large output capacitors during shutdown - prevents unsafe residual voltage in multi-rail systems |
| Internal EEPROM with ECC and fault logging | Stores user configuration, calibration coefficients, and timestamped fault records without external memory |
| Programmable analog current-mode loop compensation | Adjusts error amplifier transconductance (1.0–5.76 mmho) and pole/zero placement via RITHR resistors |
| Accurate PolyPhase current sharing | Maintains ≤±5% current imbalance across up to 6 phases using SHARE_CLK synchronization |
Applications
| Telecom Line Card Power | Datacenter Point-of-Load Supply |
|---|---|
Use Scenario: Dual-rail power for FPGA, DSP, and SerDes on 48V-powered line cards with strict sequencing and telemetry requirements. IC Role / Device Role / Timing Role: Primary dual-output controller managing 12V auxiliary and 1.2V core rails with synchronized soft-start and margining. Use Value: ±0.5% VOUT accuracy and real-time IOUT telemetry enable dynamic load-line adjustment and predictive maintenance. |
Use Scenario: High-current, multi-phase VRM for AI accelerators requiring precise voltage ramp rates and fault logging. IC Role / Device Role / Timing Role: Master controller coordinating up to six phases across two outputs, with sequenced off to safely discharge 10,000 µF+ bulk capacitance. Use Value: Internal EEPROM stores per-board calibration and fault history - critical for field-replaceable unit traceability and failure analysis. |
| Industrial PLC Backplane | Storage System Power Shelf |
Use Scenario: Robust 24V-to-5V/3.3V conversion in harsh environments with wide temperature variation and EMI concerns. IC Role / Device Role / Timing Role: Dual-channel controller with EXTVCC biasing for stable operation under 60V transients and 125°C junction conditions. Use Value: Integrated high-side current sense amplifier eliminates external op-amp, reducing BOM count and layout sensitivity. |
Use Scenario: Redundant 12V/5V power shelf with hot-swap capability and PMBus-based system-level power management. IC Role / Device Role / Timing Role: Digital power manager providing telemetry read-back (VIN, IIN, temperature), fault alerts, and remote margining via SMBus. Use Value: PMBus v1.3 compliance enables seamless integration into existing chassis management controllers (e.g., IPMI, BMC). |
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 |
|---|---|---|---|
| LTC3887EUKG#TRPBF | Single-output, higher VIN max (80V), no VOUT1 channel; adds MFR_VOUT_COMMAND for enhanced margining | Suitable for single-rail high-voltage applications (e.g., 48V→12V only); lacks dual-rail sequencing | Select when only one regulated output is required and input voltage exceeds 60V |
| TPS53689RTAT | TI dual-output PMBus controller; 4.5–16V VIN, 0.5–5.5V VOUT range; no EXTVCC pin; lower integration (no internal EEPROM) | Targeted at mid-range server VRMs; requires external nonvolatile memory for configuration storage | Select for cost-sensitive, lower-input-voltage applications where EEPROM is managed externally |
Compared with LTC3886EUKG-1#TRPBF, LTC3887EUKG#TRPBF trades dual-rail flexibility for extended input voltage and advanced margining, while TPS53689RTAT offers simpler integration at the expense of telemetry depth and autonomous fault logging capability.
Availability
LTC3886EUKG-1#TRPBF is available at Aetrix Electronics and suitable for telecom line card power, datacenter point-of-load supplies, and industrial PLC backplane applications requiring stable component supply, long-term lifecycle assurance, and full PMBus telemetry support.
Supply support for LTC3886EUKG-1#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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and power management markets.
The LTC3886/LTC3886-1 product line was designed specifically for digitally managed, high-reliability DC/DC power systems in telecom, datacom, and industrial infrastructure - emphasizing telemetry fidelity, fault resilience, and configuration persistence.
FAQ
What distinguishes LTC3886EUKG-1#TRPBF from the standard LTC3886EUKG#TRPBF?
The LTC3886EUKG-1#TRPBF includes sequenced off functionality - a hardware feature that actively discharges large output capacitors during shutdown by controlling gate drivers in reverse order. This prevents hazardous residual voltage in multi-rail systems and is absent in the base LTC3886EUKG#TRPBF. Both share identical pinout, package, and PMBus command set.
Does LTC3886EUKG-1#TRPBF require external EEPROM for configuration storage?
No. The LTC3886EUKG-1#TRPBF integrates on-chip EEPROM with ECC protection, capable of storing user configuration, calibration data, and fault logs for ≥10 years at TJ < 125°C. External memory is unnecessary unless custom firmware extensions or extended log history beyond internal capacity is required.
Can LTC3886EUKG-1#TRPBF operate without the PMBus interface enabled?
Yes. The LTC3886EUKG-1#TRPBF supports full analog operation using external resistors on RCONFIG pins to set output voltage, switching frequency, phase count, and device address. PMBus is optional for runtime reconfiguration, telemetry, and fault logging - not required for basic regulation.
What is the maximum supported PolyPhase phase count for LTC3886EUKG-1#TRPBF?
The LTC3886EUKG-1#TRPBF supports up to six total phases across both outputs - configurable as 3+3, 4+2, or 5+1 phase splits via PHAS_CFG pins or PMBus commands. Phase synchronization uses the SHARE_CLK pin, ensuring accurate current sharing within ±5% imbalance under steady-state conditions.
How does EXTVCC improve system efficiency in LTC3886EUKG-1#TRPBF designs?
EXTVCC allows the LTC3886EUKG-1#TRPBF to power its internal regulators (INTVCC, VDD33, VDD25) from an efficient intermediate rail (5.5–14V), rather than drawing from the high-voltage VIN input. This reduces internal power dissipation, lowers die temperature by up to 20°C, and improves overall converter efficiency - especially critical in 48V-input telecom applications.
LTC3886EUKG-1#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-1#TRPBF FAQ
1.How can I place an order for LTC3886EUKG-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3886EUKG-1#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-1#TRPBF reliable?
The price and inventory of LTC3886EUKG-1#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-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3886EUKG-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3886EUKG-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3886EUKG-1#TRPBF?
LTC3886EUKG-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3886EUKG-1#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-1#TRPBF?
For technical support, including LTC3886EUKG-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3886EUKG-1#TRPBF requirements.
6.How does Aetrix verify that LTC3886EUKG-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3886EUKG-1#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-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3886EUKG-1#TRPBF?
All LTC3886EUKG-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3886EUKG-1#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-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC3886EUKG-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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