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Analog Devices Inc. LTC3880EUJ#TRMPBF
- Part No.:
- LTC3880EUJ#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
LTC3880EUJ#TRMPBF.pdf
- Description:
- IC REG CTRLR BUCK PMBUS 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,734
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Product details
Overview
LTC3880EUJ#TRMPBF 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#TRMPBF datasheet, LTC3880EUJ#TRMPBF pinout, LTC3880EUJ#TRMPBF application, or LTC3880EUJ#TRMPBF equivalent, this device is selected for digitally managed, multi-phase, high-current POL applications requiring EEPROM-based configuration storage, fault logging, and real-time margining across two independent outputs.
Technical Context
The LTC3880EUJ#TRMPBF implements an analog current-mode control loop with constant-frequency PWM, supporting up to six phases via SHARE_CLK synchronization. Its internal 16-bit ADC digitizes voltage, current, and temperature telemetry with 244µV LSB resolution for VOUT and 15.625µV LSB for low-range IOUT sensing.
Digital configuration is handled through a PMBus-compliant interface (10–400kHz), enabling programmable soft-start/stop, sequencing, OV/UV thresholds, frequency sync (250kHz–1MHz), and margining. Internal EEPROM with ECC stores settings and fault logs, while dedicated RCONFIG pins allow resistor-based startup defaults without bus communication.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 24V - supports wide-input industrial and telecom rails without external pre-regulation |
| Output Voltage Range | 0.5V to 5.4V (VOUT0 max 4V, VOUT1 max 5.4V) - covers core, I/O, and auxiliary supply requirements |
| Output Voltage Accuracy | ±0.5% over temperature - ensures stable regulation under thermal stress in dense PCB layouts |
| Telemetry Resolution | 16-bit ADC for VOUT (244µV LSB), 10–15.625µV LSB for IOUT - enables millivolt-level margining and ampere-level current monitoring |
| Switching Frequency | 250kHz to 1MHz - adjustable via SYNC pin or PMBus; allows optimization of efficiency vs. size for given inductor/capacitor selection |
| Phase Support | PolyPhase® current sharing for up to 6 phases - enables scalable high-current designs with <1% inter-phase current imbalance |
| Package | 40-pin (6mm × 6mm) QFN with exposed SGND pad - provides low thermal resistance (θJC = 2.5°C/W) and compact footprint for multi-rail power modules |
Pinout & Package
40-pin (6mm × 6mm) plastic QFN package with exposed thermal pad (Pin 41 = SGND). Designed for surface-mount assembly and high-power dissipation in space-constrained applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main input power rail | Accepts 4.5V–24V; powers INTVCC regulator and gate drivers |
| TG0/TG1 | Top-side N-channel MOSFET gate drivers | High-current (1A peak) drivers with 30ns rise/fall times; support bootstrap operation via BOOST0/BOOST1 |
| BG0/BG1 | Bottom-side N-channel MOSFET gate drivers | Complementary to TGx; 30ns transition times; enable synchronous rectification |
| VSENSE0+/VSENSE0− VSENSE1+/VSENSE1− |
Differential output voltage sense inputs | High-impedance (37–41kΩ) Kelvin sensing; supports remote feedback for ±0.5% accuracy |
| ISENSE0+/ISENSE0− ISENSE1+/ISENSE1− |
Differential current sense inputs | Supports DCR or discrete shunt sensing; full-scale range up to ±128A with 1mΩ sense resistor |
| TSNS0/TSNS1 | External temperature sensor inputs | Accept thermistor or diode-connected transistor signals; enable board-level thermal monitoring |
| SDA/SCL | PMBus/I²C bidirectional serial interface | 400kHz max clock rate; open-drain with internal pull-ups; supports addressable multi-device bus |
| ALERT | Open-drain fault indicator | Asserts low on OV, UV, OC, OT, or bus timeout; configurable via PMBus command |
| RUN0/RUN1 | Enable inputs for each channel | Active-high logic; support independent sequencing and soft-start initiation per output |
| SHARE_CLK | PolyPhase® phase synchronization output | Drives clock to additional LTC3880 or compatible controllers for accurate interleaving |
Key Features
| Feature | Design Value |
|---|---|
| Digital power system management | Full PMBus v1.3 compliance with telemetry readback, fault logging, and EEPROM-stored configurations |
| Accurate dual-output regulation | ±0.5% VOUT accuracy over –40°C to +105°C; supports independent voltage, current limit, and soft-start programming |
| Robust fault protection | Programmable OV/UV on VIN and both VOUTs; peak OC detection; internal/external OT/UT; automatic response via GPIO or ALERT |
| Scalable multi-phase architecture | SHARE_CLK output enables precise phase alignment across up to 6 phases with <1% current sharing error |
| Integrated power management peripherals | On-chip 5V INTVCC LDO, 3.3V and 2.5V regulators, and 16-bit ADC eliminate external support ICs |
Applications
| Telecom Base Station Power | Datacenter Server VRM |
|---|---|
Use Scenario: Distributed 48V-to-12V/5V/3.3V conversion in macrocell and small-cell radio units with thermal constraints. IC Role / Device Role / Timing Role: Dual-output PolyPhase controller managing two independent buck stages with synchronized switching and shared thermal monitoring. Use Value: Enables precise voltage margining during field calibration and real-time telemetry for predictive maintenance using PMBus commands. |
Use Scenario: High-efficiency, digitally controlled CPU/GPU core voltage regulation in 1U servers with dynamic load steps. IC Role / Device Role / Timing Role: Primary POL controller implementing fast transient response, phase shedding, and adaptive frequency scaling via PMBus. Use Value: Achieves <1% inter-phase current imbalance and ±0.5% VOUT accuracy under 10A/µs load transients, reducing output capacitance by 30%. |
| Industrial PLC Power Module | Automotive ADAS Domain Controller |
Use Scenario: Multi-rail power for FPGA, I/O, and communication interfaces in harsh industrial environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Dual-buck controller with EEPROM-stored startup defaults and fault logging for unattended operation. Use Value: AEC-Q100 qualified variant supports –40°C to +105°C operation; internal temperature sensing eliminates external sensors for cost-sensitive designs. |
Use Scenario: Safety-critical power delivery to radar SoCs and vision processors in autonomous driving ECUs requiring ASIL-B compliance. IC Role / Device Role / Timing Role: Digitally managed dual-output controller with independent RUNx enables fail-safe shutdown sequencing per subsystem. Use Value: Programmable OV/UV thresholds and fault response timing meet ISO 26262 diagnostic coverage requirements for power domain monitoring. |
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 | Single-output controller; faster ADC (fast mode); 35ms start-up vs. 120ms; no internal 5V LDO (requires external EXTVCC) | Lower complexity single-rail designs; preferred where fast telemetry update or minimal power loss at light load is critical | Select LTC3887 when only one regulated output is needed and faster start-up or lower quiescent current is prioritized over dual-rail flexibility |
| TPS546D24RTQR | PMBus-compliant dual-output controller; 4.5V–18V input; 0.5V–5.5V output; integrated MOSFET drivers but no internal LDOs; 12-bit telemetry ADC | Cost-optimized telecom/datacom applications; lacks EEPROM fault logging and internal 5V/3.3V/2.5V regulators | Choose TPS546D24 for higher integration density and lower BOM count where external LDOs are acceptable and EEPROM-based fault history is not required |
Compared with LTC3887IUJ#TRPBF and TPS546D24RTQR, the LTC3880EUJ#TRMPBF uniquely combines dual independent outputs, internal multi-voltage regulators, EEPROM-based fault logging, and AEC-Q100 qualification-making it optimal for complex, safety-aware, multi-rail systems requiring field-updatable configurations and long-term telemetry traceability.
Availability
LTC3880EUJ#TRMPBF is available at Aetrix Electronics and suitable for telecom infrastructure, datacenter server VRMs, and industrial PLC power modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC3880EUJ#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets since 1965.
The LTC3880 belongs to Analog Devices' Power by Linear™ digital power management product line, designed specifically for intelligent, telemetry-enabled, multi-phase DC/DC conversion in high-density computing and communications systems.
FAQ
What is the operating junction temperature range for the LTC3880EUJ#TRMPBF?
The LTC3880EUJ#TRMPBF is rated for –40°C to +105°C operating junction temperature. This grade is designated by the "E" suffix and is validated for industrial and extended-temperature applications. The device incorporates thermal shutdown and external temperature sensing (TSNS0/TSNS1) to maintain safe operation within this range.
Does the LTC3880EUJ#TRMPBF include an internal 5V regulator?
Yes, the LTC3880EUJ#TRMPBF integrates a 5V linear regulator (INTVCC) that supplies internal circuitry and gate drivers. It operates from VIN (4.5V–24V) and delivers up to 100mA. When VIN drops below 6V, INTVCC must be tied directly to VIN per the datasheet specification.
How does the LTC3880EUJ#TRMPBF support multi-phase current sharing?
The LTC3880EUJ#TRMPBF supports PolyPhase® current sharing for up to six phases using its SHARE_CLK output pin. This pin generates a synchronized clock signal that aligns switching edges across multiple LTC3880 or compatible controllers, achieving <1% inter-phase current imbalance under steady-state and transient conditions.
Can the LTC3880EUJ#TRMPBF store configurations in non-volatile memory?
Yes, the LTC3880EUJ#TRMPBF includes internal EEPROM with ECC and fault logging capability. Configuration parameters-including VOUT setpoints, current limits, soft-start timing, and fault thresholds-can be stored and restored using PMBus STORE_USER_ALL and RESTORE_USER_ALL commands, ensuring consistent behavior after power cycles.
What telemetry parameters can be read back from the LTC3880EUJ#TRMPBF via PMBus?
The LTC3880EUJ#TRMPBF supports real-time PMBus readback of VIN, IIN, VOUT0/VOUT1, IOUT0/IOUT1, internal die temperature, and external temperatures (TSNS0/TSNS1). All values are digitized by its integrated 16-bit ADC, with VOUT reported at 244µV resolution and IOUT at 15.625µV (low-range) resolution.
LTC3880EUJ#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#TRMPBF FAQ
1.How can I place an order for LTC3880EUJ#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3880EUJ#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#TRMPBF reliable?
The price and inventory of LTC3880EUJ#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#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC3880EUJ#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3880EUJ#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3880EUJ#TRMPBF?
LTC3880EUJ#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3880EUJ#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#TRMPBF?
For technical support, including LTC3880EUJ#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3880EUJ#TRMPBF requirements.
6.How does Aetrix verify that LTC3880EUJ#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC3880EUJ#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#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC3880EUJ#TRMPBF?
All LTC3880EUJ#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3880EUJ#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#TRMPBF part is unused and in its original packaging.
Return procedure for LTC3880EUJ#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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