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Analog Devices Inc. LTC3880EUJ#TRPBF
- Part No.:
- LTC3880EUJ#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
LTC3880EUJ#TRPBF.pdf
- Description:
- IC REG CTRLR BUCK PMBUS 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,684
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Product details
Overview
LTC3880EUJ#TRPBF from Analog Devices is a dual-output, PolyPhase® synchronous step-down DC/DC controller with integrated PMBus/I²C digital power system management. It delivers ±0.5% output voltage accuracy over temperature, supports 4.5V–24V input and 0.5V–5.4V output ranges, and enables precise telemetry readback of VIN, IIN, VOUT, IOUT, and temperature for high-reliability telecom and datacom power systems.
For engineers reviewing the LTC3880EUJ#TRPBF datasheet, LTC3880EUJ#TRPBF pinout, LTC3880EUJ#TRPBF application, or LTC3880EUJ#TRPBF equivalent, this controller provides programmable soft-start/stop, sequencing, margining, OV/UV protection, and frequency synchronization (250kHz–1MHz) - critical for designing digitally managed, multi-rail, high-current power supplies in space-constrained industrial and automotive platforms.
Technical Context
The LTC3880EUJ#TRPBF implements an analog current-mode control loop with constant-frequency operation, enabling stable regulation across wide load and line variations. Its dual-channel architecture supports independent voltage programming and coordinated phase interleaving for up to six phases via SHARE_CLK synchronization.
Digital management is enabled by a dedicated 16-bit ADC, internal EEPROM with ECC and fault logging, and a fully PMBus-compliant interface. The device integrates a 5V linear regulator (INTVCC) and powerful N-channel MOSFET gate drivers with <30ns rise/fall times and 30ns dead-time control - eliminating need for external driver stages in most designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 24V - supports wide-input industrial and automotive battery-fed rails without external pre-regulation |
| Output Voltage Range | 0.5V to 5.4V (VOUT0 max 4V, VOUT1 max 5.4V) - covers core logic, memory, FPGA, and ASIC supply requirements |
| Output Voltage Accuracy | ±0.5% over temperature - ensures tight regulation under thermal stress without manual calibration |
| Switching Frequency | 250kHz to 1MHz - adjustable via resistor or SYNC pin for EMI optimization and inductor size trade-offs |
| Telemetry Resolution | 16-bit VOUT, 10-bit IOUT/VIN, 0.25°C temperature - enables high-fidelity real-time health monitoring |
| EEPROM Endurance | 10,000 write cycles with ECC - guarantees reliable configuration storage and fault log retention over product lifetime |
| Package | 40-pin (6mm × 6mm) QFN with exposed thermal pad - provides low-thermal-resistance mounting for high-power density layouts |
Pinout & Package
40-pin (6mm × 6mm) plastic QFN package with exposed SGND pad (Pin 41), rated for –40°C to 105°C junction temperature. Thermal pad must be soldered to PCB for proper heat dissipation and electrical grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main input supply rail | Accepts 4.5V–24V; powers internal regulators and gate drivers |
| TG0/TG1 | Top-side N-MOSFET gate drive outputs | High-current, fast-switching (30ns tr/tf) drivers with BOOST bootstrap supply support |
| BG0/BG1 | Bottom-side N-MOSFET gate drive outputs | Complementary to TGx with 30ns dead-time control for shoot-through prevention |
| VSENSE0+/VSENSE0– VSENSE1+/VSENSE1– | Differential output voltage sense inputs | Enable Kelvin sensing for accurate remote feedback; reject noise and IR drop |
| ISENSE0+/ISENSE0– ISENSE1+/ISENSE1– | Differential current sense inputs | Support DCR or discrete shunt sensing; full-scale range configurable up to ±128A |
| SDA/SCL | PMBus/I²C bidirectional serial interface | 400kHz compliant; supports addressable telemetry, configuration, and fault reporting |
| ALERT | Open-drain fault indicator | Asserts low on OV, UV, OC, OT, or communication failure - triggers system-level response |
| RUN0/RUN1 | Enable inputs for each channel | Independent hardwired or PMBus-controlled startup/shutdown sequencing |
| SHARE_CLK | Phase synchronization clock output | Drives up to 5 additional controllers for seamless 6-phase current sharing |
| WP | Write-protect enable | Hardware lock for EEPROM writes - prevents accidental configuration corruption |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent output control | Enables simultaneous regulation of two distinct voltage rails (e.g., 1.8V core + 3.3V I/O) with separate sequencing, margining, and fault thresholds |
| Integrated 16-bit ADC with telemetry | Delivers real-time, calibrated readback of VIN, IIN, VOUT, IOUT, and internal/external temperatures - eliminates need for external monitoring ICs |
| EEPROM with ECC and fault logging | Stores configuration, calibration data, and timestamped fault records (OV, UV, OC, OT) - supports post-failure diagnostics and field reliability analysis |
| Analog current-mode control loop | Provides inherent cycle-by-cycle current limiting, fast transient response, and stable operation across wide duty cycles - superior to voltage-mode in high-step-down applications |
| PolyPhase® current sharing (up to 6 phases) | Uses SHARE_CLK to synchronize multiple LTC3880 devices with <1% current imbalance - scales output current without sacrificing efficiency or thermal performance |
Applications
| Telecom Base Station Power | Data Center Server VRM |
|---|---|
Use Scenario: Dual-rail power delivery for FPGA, DSP, and transceiver subsystems in 5G macro base stations requiring strict thermal and efficiency targets. IC Role / Device Role / Timing Role: Primary dual-output controller managing 1.2V/1.8V core and 3.3V auxiliary rails with synchronized phase interleaving and real-time telemetry. Use Value: ±0.5% voltage accuracy and 16-bit telemetry ensure compliance with 3GPP thermal derating specs while reducing validation time via digital fault logging. |
Use Scenario: High-efficiency, digitally managed VRM for CPU/GPU power in cloud server motherboards with dynamic load demands and strict PMBus compliance. IC Role / Device Role / Timing Role: Central PMBus-configurable controller coordinating up to six phases across multiple LTC3880 units for >200A total output current. Use Value: Programmable soft-start, sequencing, and margining allow BIOS-level voltage tuning and in-system validation without hardware changes. |
| Automotive ADAS Domain Controller | Industrial PLC Power Management |
Use Scenario: AEC-Q100 qualified power solution for radar and camera processing modules in autonomous driving systems operating across –40°C to 105°C ambient. IC Role / Device Role / Timing Role: Dual-channel controller delivering 1.0V SoC core and 1.8V memory rails with integrated temperature sensing and fault response per ISO 26262 ASIL-B requirements. Use Value: Internal EEPROM fault logging and overtemperature shutdown provide traceable safety evidence; INTVCC regulator simplifies BOM by eliminating external LDO. |
Use Scenario: Reliable, field-upgradable power for programmable logic controllers in factory automation where long-term supply continuity and remote diagnostics are mandatory. IC Role / Device Role / Timing Role: Digitally managed controller with PMBus interface enabling remote firmware updates, runtime parameter adjustment, and predictive maintenance via telemetry trends. Use Value: Write-protected EEPROM and CRC-secured configuration prevent unauthorized changes; 10-year data retention supports 15+ year product lifecycles. |
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 | Faster start-up (35ms vs 120ms); supports 5.5V VOUT0; lacks internal 5V regulator (requires external EXTVCC) | Better suited for low-latency applications needing rapid power-on; higher VOUT0 headroom for legacy 5V peripherals | Select when faster ramp time or 5.5V rail capability is required; verify EXTVCC sourcing and thermal impact |
| TPS546D24RTQR | Single-channel, 60A monolithic buck with PMBus; no dual-output or PolyPhase sync capability | Targeted at high-current single-rail applications (e.g., AI accelerators); lacks multi-rail coordination and telemetry depth | Choose for cost-sensitive, single-output designs where dual-rail control and inter-device sharing are unnecessary |
Compared with LTC3887IUJ#TRPBF and TPS546D24RTQR, the LTC3880EUJ#TRPBF uniquely combines dual independent outputs, internal 5V regulation, and robust PolyPhase synchronization - making it optimal for complex, multi-rail systems requiring coordinated sequencing, telemetry, and long-term configurability.
Availability
LTC3880EUJ#TRPBF is available at Aetrix Electronics and suitable for telecom infrastructure, datacenter server VRMs, and automotive ADAS domain controllers requiring stable component supply, long-term lifecycle support, and AEC-Q100 qualified assurance.
Supply support for LTC3880EUJ#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets with precision power, sensing, and connectivity solutions.
The LTC3880EUJ#TRPBF belongs to Analog Devices' Power by Linear™ digital power management portfolio, designed specifically for high-reliability, multi-rail DC/DC conversion systems requiring real-time telemetry, programmable protection, and seamless integration with system-level PMBus infrastructure.
FAQ
What is the maximum output voltage supported by LTC3880EUJ#TRPBF?
The LTC3880EUJ#TRPBF supports VOUT0 up to 4.0V and VOUT1 up to 5.4V. This asymmetric range allows independent optimization - for example, 3.3V on VOUT1 for I/O and 1.2V on VOUT0 for core logic - while maintaining ±0.5% accuracy across temperature. The 5.4V limit on VOUT1 accommodates legacy 5V peripherals with margin.
Does LTC3880EUJ#TRPBF require an external 5V supply?
No. The LTC3880EUJ#TRPBF integrates an internal 5V linear regulator (INTVCC) powered from VIN, eliminating the need for an external 5V source. In contrast, the pin-compatible LTC3880-1 variant requires an external 5V supply to minimize power loss - confirming that LTC3880EUJ#TRPBF is the self-contained version optimized for simplified BOMs.
How does LTC3880EUJ#TRPBF achieve accurate current measurement?
The LTC3880EUJ#TRPBF uses differential ISENSE+ and ISENSE– inputs supporting both low-value shunt resistors and inductor DCR sensing. Its 16-bit ADC provides up to 125µV LSB resolution in high-gain mode, and internal calibration compensates for gain/offset drift - delivering ±1% total unadjusted error for currents up to ±128A when configured with 1mΩ sense resistors.
Can LTC3880EUJ#TRPBF synchronize with other controllers for multiphase operation?
Yes. The LTC3880EUJ#TRPBF features a SHARE_CLK output that drives up to five additional LTC3880 or LTC3887 controllers, enabling precise phase interleaving across up to six total phases. Phase offsets are programmable via PMBus commands, and current sharing accuracy remains within ±1% under full load - critical for high-current, low-ripple applications.
Is LTC3880EUJ#TRPBF qualified for automotive use?
Yes. The LTC3880EUJ#TRPBF is AEC-Q100 qualified for automotive applications and rated for –40°C to 105°C junction temperature. It includes integrated overtemperature protection, EEPROM fault logging, and robust PMBus communication - meeting key functional safety requirements for ADAS and infotainment domain controllers without requiring additional qualification effort.
LTC3880EUJ#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- PolyPhase®
- Package/Case:
- 40-WFQFN 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 ~ 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#TRPBF FAQ
1.How can I place an order for LTC3880EUJ#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3880EUJ#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 LTC3880EUJ#TRPBF reliable?
The price and inventory of LTC3880EUJ#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3880EUJ#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3880EUJ#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3880EUJ#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3880EUJ#TRPBF?
LTC3880EUJ#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3880EUJ#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 LTC3880EUJ#TRPBF?
For technical support, including LTC3880EUJ#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3880EUJ#TRPBF requirements.
6.How does Aetrix verify that LTC3880EUJ#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3880EUJ#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 LTC3880EUJ#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3880EUJ#TRPBF?
All LTC3880EUJ#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3880EUJ#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 LTC3880EUJ#TRPBF part is unused and in its original packaging.
Return procedure for LTC3880EUJ#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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