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Analog Devices Inc. LTC3880EUJ-1#TRMPBF
- Part No.:
- LTC3880EUJ-1#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
LTC3880EUJ-1#TRMPBF.pdf
- Description:
- IC REG CTRLR BUCK PMBUS 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,457
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Product details
Overview
LTC3880EUJ-1#TRMPBF from Analog Devices is a dual-output, PolyPhase® synchronous step-down DC/DC controller with digital power system management via PMBus/I²C interface. It delivers ±0.5% output voltage accuracy over temperature, supports 4.5V–24V input and 0.5V–5.4V output ranges, integrates 16-bit ADC telemetry (VIN, IIN, VOUT, IOUT, temperature), and enables precise sequencing, margining, and fault logging in high-current distributed power systems.
For engineers reviewing the LTC3880EUJ-1#TRMPBF datasheet, LTC3880EUJ-1#TRMPBF pinout, LTC3880EUJ-1#TRMPBF application, or LTC3880EUJ-1#TRMPBF equivalent, this device serves as a digitally programmable, AEC-Q100 qualified controller for telecom, datacom, and industrial power rails requiring real-time telemetry, multi-phase current sharing, and EEPROM-based configuration persistence.
Technical Context
The LTC3880EUJ-1#TRMPBF implements an analog current-mode control loop with constant-frequency PWM, enabling stable regulation across wide load and line variations. Its dual-channel architecture supports independent voltage programming (VOUT0: 0.5V–4V; VOUT1: 0.5V–5.4V) and accurate polyphase current sharing across up to six phases using the SHARE_CLK signal.
Digital management is handled through a PMBus-compliant I²C interface with integrated 16-bit ADC, internal EEPROM with ECC and fault logging, and dedicated GPIOs for sequencing control. Unlike the LTC3880, the LTC3880-1 variant uses an external 5V supply for EXTVCC instead of the internal INTVCC regulator-reducing power loss and enabling higher efficiency in low-VIN applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 24V - supports wide-input industrial and telecom supplies without external pre-regulation |
| Output Voltage Range | VOUT0: 0.5V–4V; VOUT1: 0.5V–5.4V - covers core logic, memory, and I/O rail requirements |
| Output Voltage Accuracy | ±0.5% over temperature - ensures tight regulation for sensitive ASIC/FPGA cores |
| Switching Frequency | 250kHz to 1MHz - programmable via resistor or SYNC pin for EMI optimization and layout flexibility |
| Telemetry Resolution | VOUT: 16-bit (244µV LSB); IOUT: 10–16-bit scalable (15.6–125µV LSB) - enables precise closed-loop monitoring |
| EEPROM Endurance | 10,000 write cycles at 0°C–85°C - supports field firmware updates and configuration tuning |
| PMBus Compliance | Full SMBus v2.0 / PMBus v1.2 support - interoperable with industry-standard power management tools like LTpowerPlay™ |
Pinout & Package
Package: 40-pin (6mm × 6mm) QFN with exposed thermal pad (Pin 41 = SGND). RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main input supply rail | Accepts 4.5V–24V; powers internal circuitry and gate drivers |
| TG0/TG1 | Top-side N-MOSFET gate drivers | High-current, fast-switching (30ns tr/tf) outputs for synchronous rectification |
| BG0/BG1 | Bottom-side N-MOSFET gate drivers | Complementary drive with 30ns dead-time control to prevent shoot-through |
| VSENSE0+/VSENSE0− VSENSE1+/VSENSE1− | Differential output voltage sensing | Enables Kelvin-connected remote sense for <±0.5% accuracy under PCB IR drop |
| ISENSE0+/ISENSE0− ISENSE1+/ISENSE1− | Differential current sense inputs | Supports low-value shunt or DCR sensing; full-scale range up to ±128A |
| SHARE_CLK | PolyPhase current-sharing clock | Synchronizes up to 6 controllers for balanced phase interleaving and thermal distribution |
| SDA/SCL | PMBus/I²C bidirectional data/clock | 400kHz max speed; open-drain with 3mA sink capability; supports multi-device bus topology |
| ALERT | Open-drain fault indicator | Asserts low on OV/UV/IOUT/OT faults; configurable via PMBus command |
| RUN0/RUN1 | Enable inputs per channel | Active-high logic; supports independent soft-start sequencing and power-up ordering |
| WP | Write-protect enable | Hardware lock for EEPROM writes; prevents accidental configuration corruption |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent output control | Enables separate voltage, current limit, soft-start, and sequencing per rail - critical for mixed-voltage SoC power domains |
| Integrated 16-bit ADC with telemetry | Simultaneously measures VIN, IIN, VOUT0/1, IOUT0/1, internal/external temperature - eliminates need for external monitoring ICs |
| Internal EEPROM with ECC | Stores configuration, calibration data, and fault logs across power cycles - ensures deterministic startup without host intervention |
| AEC-Q100 qualification | Rated for –40°C to 105°C operation (E-grade) - validated for automotive infotainment and ADAS power subsystems |
| Analog current-mode control | Provides inherent cycle-by-cycle current limiting and superior transient response vs. voltage-mode alternatives |
Applications
| Telecom Base Station Power | Data Center Server VRM |
|---|---|
Use Scenario: Dual-rail power delivery for FPGA + DDR4 memory in 5G remote radio units. IC Role / Device Role / Timing Role: Primary PolyPhase controller managing 12V-to-1.8V (core) and 12V-to-1.2V (I/O) conversion with synchronized phase interleaving. Use Value: Real-time telemetry enables dynamic thermal derating and predictive maintenance; ±0.5% accuracy maintains FPGA timing margins under load transients. | Use Scenario: High-efficiency, digitally managed VRM for CPU/GPU power in cloud servers. IC Role / Device Role / Timing Role: Dual-output controller coordinating with companion LTC3887 for 6-phase total solution; handles sequencing, margining, and fault reporting via PMBus. Use Value: EEPROM-stored configurations ensure consistent power-up behavior across thousands of identical nodes; SHARE_CLK enables precise current balancing across phases. |
| Automotive ADAS Domain Controller | Industrial PLC Power Management |
Use Scenario: Powering vision processor SoC and sensor interfaces in autonomous driving ECUs. IC Role / Device Role / Timing Role: AEC-Q100 qualified controller delivering 1.0V core, 1.8V I/O, and 3.3V peripheral rails with fault-safe shutdown and temperature monitoring. Use Value: Internal fault logging captures root cause of brownouts or overtemperature events; GPIO-controlled sequencing meets ASIL-B boot timing requirements. | Use Scenario: Distributed power architecture for modular I/O backplanes in factory automation systems. IC Role / Device Role / Timing Role: Centralized digital controller managing multiple isolated DC/DC modules via PMBus; performs voltage margining during production test. Use Value: Programmable OV/UV thresholds protect against industrial line surges; 90ms telemetry update rate supports real-time health monitoring in SCADA environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output digital DC/DC controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3887IUJ#TRPBF | Higher integration: includes internal 5V LDO, faster ADC (fast mode), 35ms start-up vs. 120ms | Better suited for time-critical applications where fast power-on is required; lacks EXTVCC option for ultra-low-loss designs | Select LTC3887 when faster start-up and integrated bias supply are prioritized over minimum quiescent loss |
| TPS53689RTAT | Texas Instruments part; supports 3–20V VIN, 0.5–5.5V VOUT; PMBus v1.3; no internal EEPROM | Requires external MCU for configuration storage; lower cost but adds software complexity for persistent settings | Choose TPS53689 when leveraging TI's Fusion Digital Power Designer ecosystem and external nonvolatile storage is acceptable |
Compared with LTC3887IUJ#TRPBF and TPS53689RTAT, the LTC3880EUJ-1#TRMPBF uniquely balances low-power EXTVCC operation, on-chip EEPROM retention, and AEC-Q100 qualification-making it optimal for automotive and industrial applications demanding robust, self-contained digital power management without host dependency.
Availability
LTC3880EUJ-1#TRMPBF is available at Aetrix Electronics and suitable for telecom base station power, automotive ADAS domain controllers, and industrial PLC power management requiring stable component supply, long-term lifecycle support, and AEC-Q100 compliance.
Supply support for LTC3880EUJ-1#TRMPBF 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 LTC3880/LTC3880-1 product line was designed specifically for digitally managed, high-current, multi-rail DC/DC conversion in infrastructure and automotive systems-emphasizing telemetry fidelity, fault resilience, and configuration persistence.
FAQ
What is the key functional difference between LTC3880EUJ-1#TRMPBF and LTC3880EUJ#TRMPBF?
The LTC3880EUJ-1#TRMPBF uses an external 5V supply for EXTVCC, eliminating the internal INTVCC linear regulator present in the standard LTC3880EUJ#TRMPBF. This reduces power loss and improves efficiency in low-input-voltage applications, while maintaining identical digital management features, pinout, and performance specifications otherwise.
Does LTC3880EUJ-1#TRMPBF support PolyPhase® current sharing with more than two phases?
Yes, LTC3880EUJ-1#TRMPBF supports accurate current sharing across up to six phases using the SHARE_CLK pin. It can operate as a master or slave in multi-controller configurations, enabling scalable high-current solutions without external current-sharing ICs or complex analog compensation networks.
How does the EEPROM in LTC3880EUJ-1#TRMPBF enhance system reliability?
The internal EEPROM in LTC3880EUJ-1#TRMPBF stores configuration, calibration data, and fault logs with ECC protection. This ensures deterministic power-up behavior without host initialization, preserves settings across power cycles, and enables post-fault diagnostics-critical for unattended industrial and automotive deployments where host communication may be unavailable.
Can LTC3880EUJ-1#TRMPBF monitor both input and output parameters simultaneously?
Yes, LTC3880EUJ-1#TRMPBF continuously monitors VIN, IIN, VOUT0/VOUT1, IOUT0/IOUT1, internal die temperature, and up to two external temperatures via TSNS0/TSNS1-all with dedicated 10–16-bit ADC channels. Telemetry data is updated every 90ms in round-robin fashion and accessible via PMBus commands such as READ_VIN, READ_IOUT, and READ_TEMPERATURE.
Is LTC3880EUJ-1#TRMPBF compatible with LTpowerPlay™ software?
Yes, LTC3880EUJ-1#TRMPBF is fully supported by Analog Devices' LTpowerPlay™ GUI-based development tool. The software enables real-time parameter adjustment, telemetry visualization, fault injection testing, configuration storage to EEPROM, and automated script generation-streamlining design validation and field calibration of the LTC3880EUJ-1#TRMPBF.
LTC3880EUJ-1#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- PolyPhase®
- Package/Case:
- 40-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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 ~ 24V
- Frequency - Switching:
- -
- Duty Cycle (Max):
- -
- Synchronous Rectifier:
- Yes
- Clock Sync:
- Yes
- Serial Interfaces:
- I2C, PMBus
- Control Features:
- Enable, Frequency Control
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-QFN (6x6)
LTC3880EUJ-1#TRMPBF FAQ
1.How can I place an order for LTC3880EUJ-1#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3880EUJ-1#TRMPBF 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 LTC3880EUJ-1#TRMPBF reliable?
The price and inventory of LTC3880EUJ-1#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3880EUJ-1#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC3880EUJ-1#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3880EUJ-1#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3880EUJ-1#TRMPBF?
LTC3880EUJ-1#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3880EUJ-1#TRMPBF 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 LTC3880EUJ-1#TRMPBF?
For technical support, including LTC3880EUJ-1#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3880EUJ-1#TRMPBF requirements.
6.How does Aetrix verify that LTC3880EUJ-1#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC3880EUJ-1#TRMPBF 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 LTC3880EUJ-1#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC3880EUJ-1#TRMPBF?
All LTC3880EUJ-1#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3880EUJ-1#TRMPBF, 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 LTC3880EUJ-1#TRMPBF part is unused and in its original packaging.
Return procedure for LTC3880EUJ-1#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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