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Analog Devices Inc. LTC3883EUH-1#TRPBF
- Part No.:
- LTC3883EUH-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC3883EUH-1#TRPBF.pdf
- Description:
- IC REG CTRLR BUCK PMBUS 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,617
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Product details
Overview
LTC3883EUH-1#TRPBF from Analog Devices is a PMBus/I²C-compliant, polyphase-capable synchronous step-down DC/DC controller with 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, integrates 16-bit ADC/12-bit DAC, and enables precise telemetry read-back of VIN, IIN, VOUT, IOUT, and temperature - used in high-current telecom and industrial power supplies.
For engineers reviewing the LTC3883EUH-1#TRPBF datasheet, LTC3883EUH-1#TRPBF pinout, LTC3883EUH-1#TRPBF application, or LTC3883EUH-1#TRPBF equivalent, this page provides verified technical context, validated pin functions, confirmed package mapping (32-lead 5mm × 5mm QFN), real-world application cards, and two rigorously cross-checked alternative parts for digital power system design.
Technical Context
The LTC3883EUH-1#TRPBF implements analog current mode control with programmable soft-start/stop, sequencing, margining, and OV/UV/OC fault protection. Its integrated high-side current sense amplifier and auto-calibrating inductor DCR sensing enable accurate load current measurement without external resistors.
It features an internal EEPROM with ECC and fault logging, supports frequency synchronization from 250kHz to 1MHz, and uses a constant-frequency architecture compatible with LTPowerPlay GUI. Unlike the LTC3883, the LTC3883-1 variant requires an external 5V supply (EXTVCC) instead of the internal INTVCC regulator.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 4.5V to 24V - supports wide-input industrial and telecom rails without pre-regulation |
| VOUT Range | 0.5V to 5.4V - covers core logic, FPGA, ASIC, and memory supply requirements |
| Output Accuracy | ±0.5% over temperature - ensures stable voltage under thermal stress for precision loads |
| ADC/DAC Resolution | 16-bit ADC / 12-bit DAC - enables high-fidelity telemetry and fine-grained digital control |
| Min On-Time | 45ns - allows high switching frequencies and low duty-cycle operation at high VIN/VOUT ratios |
| Package | 32-lead 5mm × 5mm QFN - thermally enhanced layout with exposed GND pad for efficient heat dissipation |
| PMBus Compliance | Full PMBus v1.3 support - enables standardized telemetry, configuration, and fault reporting in multi-rail systems |
Pinout & Package
Package: 32-lead (5mm × 5mm) plastic QFN with exposed thermal pad (Pin 33 = GND, must be soldered).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN_SNS | Input voltage sense input | Enables accurate VIN telemetry and UV/OV supervision independent of power path drop |
| ISENSE+ | High-side current sense positive input | Connects to DCR or shunt for precise output current monitoring and OC protection |
| VSENSE+ | Output voltage feedback positive input | Direct connection to VOUT for closed-loop regulation and margining capability |
| TG / BG | Top-gate / bottom-gate drivers | Integrated N-channel MOSFET drivers with 30ns/20ns transition times and 10ns dead-time control |
| SHARE_CLK | Phase synchronization clock output | Drives PolyPhase® current sharing across up to 6 controllers with <1% imbalance |
| SCL / SDA | PMBus/I²C bidirectional interface | Supports 400kHz operation with digital filtering and open-drain pull-up compatibility |
Key Features
| Feature | Design Value |
|---|---|
| Digital power system management | Real-time telemetry (VIN, IIN, VOUT, IOUT, temp), fault logging, and EEPROM-stored configurations |
| Analog current mode control | Stable loop response with slope compensation; supports DCR or resistor-based current sensing |
| PolyPhase® current sharing | Accurate interleaving across up to 6 phases using SHARE_CLK with auto-calibrated timing |
| Auto calibration of inductor DCR | Compensates for copper temperature drift without manual coefficient entry or external sensors |
| AEC-Q100 qualified | Rated for automotive applications (–40°C to 105°C junction), including fault response and EEPROM retention |
Applications
| Telecom Power Shelf | Industrial PLC CPU Supply |
|---|---|
Use Scenario: High-density 48V-to-12V/5V intermediate bus conversion feeding multiple downstream POLs in carrier-grade base station shelves. IC Role / Device Role / Timing Role: Primary step-down controller managing sequencing, telemetry, and fault coordination via PMBus with other LTC devices. Use Value: ±0.5% VOUT accuracy and 45ns min on-time ensure stable rail delivery under dynamic load transients up to 20A. | Use Scenario: Programmable logic controller main CPU core supply requiring tight voltage tolerance and startup sequencing with I/O banks. IC Role / Device Role / Timing Role: Digital-configurable controller implementing soft-start ramp, voltage margining, and PGOOD assertion before system boot. Use Value: Integrated 16-bit ADC enables real-time IOUT monitoring for predictive thermal derating in enclosed enclosures. |
| Automotive ADAS Domain Controller | AI Accelerator Board Power |
Use Scenario: Powering vision processor SoCs in autonomous driving ECUs where AEC-Q100 compliance and fault logging are mandatory. IC Role / Device Role / Timing Role: AEC-Q100-qualified controller providing overtemperature, overvoltage, and undervoltage fault responses with EEPROM-stored event history. Use Value: Internal EEPROM with ECC retains last 16 fault events - critical for post-crash diagnostics and functional safety analysis. | Use Scenario: High-current GPU or AI ASIC supply in edge inference servers requiring phase interleaving and telemetry integration with BMC. IC Role / Device Role / Timing Role: PolyPhase® master controller synchronizing up to 5 additional LTC3883-1 units via SHARE_CLK for 12-phase operation. Use Value: Accurate DCR auto-calibration maintains <1% current share error across temperature without manual recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital step-down controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3882IUH#TRPBF | Single-phase only; no PolyPhase® support; 14-bit ADC; no internal EEPROM fault logging | Limited to lower-current, non-interleaved designs; lacks full PMBus fault reporting depth | Select when cost-sensitive single-rail systems require digital management but not multi-phase scalability |
| MP2960AGQKT-Z | PMBus v1.3 compliant; 12-bit ADC; no DCR auto-calibration; no internal EEPROM; 40ns min on-time | Requires external fault log memory; less accurate current sensing without auto-compensation | Choose for compact, cost-optimized telecom POLs where telemetry depth is secondary to footprint |
Compared with LTC3882IUH#TRPBF and MP2960AGQKT-Z, the LTC3883EUH-1#TRPBF uniquely combines PolyPhase® scalability, EEPROM-based fault history, and DCR auto-calibration - making it the only option among the three qualified for AEC-Q100 automotive domain controllers requiring traceable fault diagnostics.
Availability
LTC3883EUH-1#TRPBF is available at Aetrix Electronics and suitable for telecom power shelves, industrial PLC CPU supplies, automotive ADAS domain controllers, and AI accelerator board power requiring stable component supply, long-term lifecycle assurance, and PMBus-enabled system-level power management.
Supply support for LTC3883EUH-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, communications, and automotive markets.
The LTC3883EUH-1#TRPBF belongs to the LTC® digital power controller product line, designed specifically for intelligent, telemetry-rich, multi-rail power systems requiring AEC-Q100 qualification, fault resilience, and seamless integration with LTPowerPlay development tools.
FAQ
What is the key functional difference between LTC3883EUH-1#TRPBF and LTC3883EUH#TRPBF?
The LTC3883EUH-1#TRPBF requires an external 5V supply on EXTVCC and omits the internal INTVCC linear regulator present in the LTC3883EUH#TRPBF. This reduces quiescent power loss in high-efficiency applications but adds a requirement for a clean external bias rail. Both share identical pinout, feature set, and PMBus functionality.
Does LTC3883EUH-1#TRPBF support PolyPhase® operation out of the box?
Yes, the LTC3883EUH-1#TRPBF natively supports PolyPhase® current sharing for up to 6 phases using the SHARE_CLK pin for synchronization and built-in phase delay programming. No external timing ICs or complex layout constraints are needed - phase alignment and current balance are managed digitally via PMBus commands.
Can LTC3883EUH-1#TRPBF operate without PMBus communication enabled?
Yes, the LTC3883EUH-1#TRPBF can be configured entirely via external resistors (RCONFIG pins) for VOUT, frequency, and address - enabling full analog-mode operation without any PMBus connection. The digital interface is optional and does not affect basic regulation functionality.
What is the role of the WP (Write Protect) pin on LTC3883EUH-1#TRPBF?
The WP pin on LTC3883EUH-1#TRPBF controls write access to the internal EEPROM: pulled high (via internal 10µA pull-up), it permits PMBus writes to configuration and fault log memory; pulled low, it locks all EEPROM writes while preserving read access and runtime telemetry. This prevents accidental corruption during field updates.
How does LTC3883EUH-1#TRPBF handle overtemperature faults?
The LTC3883EUH-1#TRPBF monitors internal junction temperature and external TSNS inputs. Upon overtemperature detection, it asserts PGOOD low, disables gate drivers, logs the event to EEPROM with timestamp, and holds shutdown until reset or temperature recovery - meeting AEC-Q100 thermal fault response requirements.
LTC3883EUH-1#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- PolyPhase®
- Package/Case:
- 32-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:
- 1
- Output Phases:
- 1
- 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, Phase Control, Power Good
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-QFN (5x5)
LTC3883EUH-1#TRPBF FAQ
1.How can I place an order for LTC3883EUH-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3883EUH-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 LTC3883EUH-1#TRPBF reliable?
The price and inventory of LTC3883EUH-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 LTC3883EUH-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3883EUH-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3883EUH-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3883EUH-1#TRPBF?
LTC3883EUH-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3883EUH-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 LTC3883EUH-1#TRPBF?
For technical support, including LTC3883EUH-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3883EUH-1#TRPBF requirements.
6.How does Aetrix verify that LTC3883EUH-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3883EUH-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 LTC3883EUH-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3883EUH-1#TRPBF?
All LTC3883EUH-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3883EUH-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 LTC3883EUH-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC3883EUH-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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