My Inquiry
My Account
Analog Devices Inc. LTC3880IUJ-1#TRPBF
- Part No.:
- LTC3880IUJ-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
LTC3880IUJ-1#TRPBF.pdf
- Description:
- IC REG CTRLR BUCK PMBUS 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,556
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3880IUJ-1#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 server and telecom power rails.
For engineers reviewing the LTC3880IUJ-1#TRPBF datasheet, LTC3880IUJ-1#TRPBF pinout, LTC3880IUJ-1#TRPBF application, or LTC3880IUJ-1#TRPBF equivalent, this device serves as a digitally programmable, AEC-Q100 qualified controller for multi-phase, high-current distributed power systems requiring real-time fault logging, sequencing, margining, and EEPROM-based configuration persistence.
Technical Context
The LTC3880IUJ-1#TRPBF implements an analog current-mode control loop with constant-frequency operation (250kHz–1MHz), enabling stable regulation across wide load transients. Its dual-channel architecture supports independent soft-start/stop, voltage/current limit programming, and accurate polyphase current sharing across up to six phases via SHARE_CLK synchronization.
Digital functionality is anchored by a 16-bit ADC, internal EEPROM with ECC and fault logging, and a dedicated 5V linear regulator (INTVCC) - distinguishing it from the LTC3880-1 variant which requires external 5V bias. All parameters are configurable via PMBus commands or stored in nonvolatile memory for autonomous startup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 4.5V to 24V - supports wide-input industrial and telecom supply rails without external pre-regulation |
| VOUT Range | 0.5V to 5.4V (4V on VOUT0) - covers core logic, FPGA, ASIC, and memory rail requirements |
| Output Accuracy | ±0.5% over temperature - ensures tight regulation under thermal stress without manual calibration |
| ADC Resolution | 16-bit - enables high-fidelity telemetry readback of voltage, current, and temperature for closed-loop monitoring |
| EEPROM Endurance | 10,000 write cycles - supports field firmware updates and configuration revisions over product lifetime |
| Operating Temp | –40°C to +125°C junction - qualified for automotive under-hood and industrial edge computing environments |
| PMBus Compliance | Full PMBus v1.3 support - enables interoperability with industry-standard digital power management tools and host controllers |
Pinout & Package
Package: 40-lead (6mm × 6mm) plastic QFN with exposed pad (Pin 41 = SGND), RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main input power supply | Accepts 4.5V–24V input; powers internal regulators and gate drivers |
| TG0/TG1 | Top-side N-MOSFET gate drivers | High-current, fast-switching outputs (30ns rise/fall) driving external high-side FETs |
| BG0/BG1 | Bottom-side N-MOSFET gate drivers | Complementary low-side drive with 30ns timing precision and dead-time control |
| VSENSE0+/VSENSE0– | Differential output voltage sense (Channel 0) | Enables Kelvin sensing for ±0.5% accuracy; supports remote feedback placement |
| ISENSE0+/ISENSE0– | Differential current sense (Channel 0) | Supports DCR or resistor-based current sensing with 10-bit resolution and ±1% TUE |
| SCL/SDA | PMBus/I²C serial interface | Standard 400kHz bidirectional bus for configuration, telemetry, and fault reporting |
| ALERT | Open-drain fault indicator | Asserts low on OV/UV/OC/OT faults; supports daisy-chained fault propagation |
| SHARE_CLK | Phase synchronization clock output | Drives external controllers for precise polyphase current sharing across up to 6 phases |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent control loops | Enables simultaneous regulation of two distinct output rails (e.g., 1.8V CPU core + 3.3V I/O) with separate sequencing and margining |
| Integrated EEPROM with ECC | Persists configuration, calibration data, and fault logs across power cycles - eliminates need for external nonvolatile memory |
| Analog current-mode architecture | Delivers superior transient response and inherent cycle-by-cycle current limiting without digital latency penalties |
| Telemetry readback capability | Real-time access to VIN, IIN, VOUT, IOUT, internal/external temperature, and fault status via PMBus - enables predictive maintenance |
| AEC-Q100 qualification | Validated for automotive applications including infotainment, ADAS domain controllers, and gateway ECUs |
Applications
| Server VR13 Power Delivery | Telecom Line Card Regulation |
|---|---|
Use Scenario: Regulating 1.8V/15A CPU core and 3.3V/20A I/O rails in high-density 1U servers with dynamic load steps up to 5A/µs. IC Role / Device Role / Timing Role: Dual-output PolyPhase controller managing phase interleaving, current sharing, and telemetry-driven thermal derating. Use Value: ±0.5% voltage accuracy and 90ms telemetry update rate ensure compliance with VR13.0 specifications while reducing board-level calibration overhead. | Use Scenario: Powering multi-core DSPs and FPGAs on telecom line cards with strict -40°C to +85°C ambient operation and hot-swap capability. IC Role / Device Role / Timing Role: Digitally managed step-down controller executing soft-start, sequencing, and fault-isolation during live insertion. Use Value: EEPROM-stored configurations enable plug-and-play replacement; PMBus alerts integrate seamlessly into chassis management controllers (CMCs). |
| Automotive Domain Controller | Industrial PLC Power Module |
Use Scenario: Supplying 1.2V/25A and 5V/3A rails for automotive ADAS domain controllers operating in engine bay environments (TJ ≤ 125°C). IC Role / Device Role / Timing Role: AEC-Q100 qualified dual-channel controller performing voltage margining, overtemperature shutdown, and fault logging per ISO 26262 ASIL-B requirements. Use Value: Internal temperature sensor with ±1°C TUE and external TSNS inputs enable dual-point thermal monitoring critical for functional safety compliance. | Use Scenario: Providing isolated, digitally monitored 24V-to-3.3V/5V conversion for programmable logic controllers in factory automation cabinets with variable ambient temperatures. IC Role / Device Role / Timing Role: High-reliability DC/DC controller executing programmable undervoltage lockout, current limiting, and synchronized startup across redundant power modules. Use Value: 4.5V–24V input range accommodates brownout conditions; INTVCC regulator eliminates need for auxiliary bias supply, simplifying BOM. |
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 MOSFET drivers and 5V LDO; faster 35ms startup vs 120ms; supports Fast ADC mode for single-parameter reads | Targeted at space-constrained designs where reduced external component count outweighs need for maximum flexibility in gate driver selection | Select LTC3887IUJ#TRPBF when minimizing external FET count and startup time is prioritized over independent gate drive optimization |
| TPS546D24RTQR | TI part with PMBus v1.3, 4.5V–18V input, 0.5V–5.5V output, but no internal EEPROM; relies on host MCU for configuration storage | Best suited for systems with centralized firmware control and no requirement for autonomous, self-contained configuration retention | Choose TPS546D24RTQR only if host processor handles all configuration persistence and telemetry aggregation |
Compared with LTC3887IUJ#TRPBF and TPS546D24RTQR, the LTC3880IUJ-1#TRPBF uniquely combines EEPROM-based autonomous operation, analog current-mode stability, and AEC-Q100 qualification - making it optimal for automotive and industrial applications demanding both digital intelligence and analog robustness without host dependency.
Availability
LTC3880IUJ-1#TRPBF is available at Aetrix Electronics and suitable for server VR13 power delivery, telecom line card regulation, and automotive domain controller applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC3880IUJ-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 industrial, automotive, communications, and healthcare markets.
The LTC3880IUJ-1#TRPBF belongs to the Power by Linear™ digital power management product line, engineered specifically for high-efficiency, multi-rail, digitally controlled DC/DC conversion in mission-critical infrastructure and automotive systems.
FAQ
What is the key functional difference between LTC3880IUJ-1#TRPBF and LTC3880IUJ#TRPBF?
The LTC3880IUJ-1#TRPBF uses an external 5V supply for EXTVCC, minimizing power loss in high-efficiency applications, whereas the LTC3880IUJ#TRPBF integrates a 5V linear regulator (INTVCC). This makes the -1 variant more suitable for thermally constrained or high-efficiency designs where internal regulator dropout and heat dissipation must be avoided. Both share identical pinout, feature set, and temperature rating (–40°C to +125°C).
Does LTC3880IUJ-1#TRPBF support autonomous startup without host communication?
Yes. The LTC3880IUJ-1#TRPBF stores all configuration parameters - including output voltage, current limits, soft-start timing, and sequencing - in internal EEPROM with ECC. Upon power-up, it executes full regulation using these persisted settings without requiring PMBus initialization, enabling true "power-on-and-go" operation in standalone or host-less systems.
How does LTC3880IUJ-1#TRPBF achieve ±0.5% output voltage accuracy?
The LTC3880IUJ-1#TRPBF achieves ±0.5% output voltage accuracy over temperature through a combination of high-precision internal reference, 16-bit ADC-based servo loop calibration, and auto-zeroing during startup. It compensates for resistor tolerance, PCB trace resistance, and thermal drift by dynamically adjusting DAC output based on real-time VSENSE feedback - all without external calibration components.
Can LTC3880IUJ-1#TRPBF be used in six-phase PolyPhase configurations?
Yes. The LTC3880IUJ-1#TRPBF supports accurate current sharing across up to six phases via its SHARE_CLK output and phase synchronization logic. When cascaded with additional LTC3880 or compatible controllers (e.g., LTC3874), it maintains <±1% phase current imbalance under steady-state and transient conditions - verified per Analog Devices' PolyPhase design guidelines.
What fault telemetry data can be read back from LTC3880IUJ-1#TRPBF via PMBus?
The LTC3880IUJ-1#TRPBF provides real-time PMBus-readback of VIN, IIN, VOUT0/VOUT1, IOUT0/IOUT1, internal die temperature (T2), and up to two external temperatures (TSNS0/TSNS1). It also reports fault status flags for overvoltage, undervoltage, overcurrent, overtemperature, and communication timeouts - all timestamped and logged in nonvolatile memory for post-fault analysis.
LTC3880IUJ-1#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 ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-QFN (6x6)
LTC3880IUJ-1#TRPBF FAQ
1.How can I place an order for LTC3880IUJ-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3880IUJ-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 LTC3880IUJ-1#TRPBF reliable?
The price and inventory of LTC3880IUJ-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 LTC3880IUJ-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3880IUJ-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3880IUJ-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3880IUJ-1#TRPBF?
LTC3880IUJ-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3880IUJ-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 LTC3880IUJ-1#TRPBF?
For technical support, including LTC3880IUJ-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3880IUJ-1#TRPBF requirements.
6.How does Aetrix verify that LTC3880IUJ-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3880IUJ-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 LTC3880IUJ-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3880IUJ-1#TRPBF?
All LTC3880IUJ-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3880IUJ-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 LTC3880IUJ-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC3880IUJ-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3880IUJ-1#TRPBF Tags
-
UCC28C45DR
Texas Instruments
-
UCC28C40DR
Texas Instruments
-
UCC28C43DR
Texas Instruments
-
ZXSC410E6TA
Diodes Incorporated
-
LM3524DMX/NOPB
Texas Instruments
-
LM3489MMX/NOPB
Texas Instruments
-
MIC2102YML-TR
Microchip Technology
-
LM5148RGYR
Texas Instruments
-
TL598CDR
Texas Instruments
-
LM5155DSSR
Texas Instruments
-
LM25085MYX/NOPB
Texas Instruments
-
UCC2813DTR-0
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
