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Analog Devices Inc. LTC3884ERHE-1#TRPBF
- Part No.:
- LTC3884ERHE-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
LTC3884ERHE-1#TRPBF.pdf
- Description:
- IC REG CTRLR BUCK PMBUS 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,716
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Product details
Overview
LTC3884ERHE-1#TRPBF from Analog Devices is a dual-output PolyPhase synchronous step-down DC/DC controller with PMBus/I²C digital power system management, sub-milliohm DCR current sensing, ±0.5% output voltage accuracy over temperature, and integrated three-state PWM outputs for driving DrMOS or power blocks. It operates across 4.5V–38V input and supports 0.5V–5.5V output per channel in telecom, datacom, and industrial point-of-load systems.
For engineers reviewing the LTC3884ERHE-1#TRPBF datasheet, LTC3884ERHE-1#TRPBF pinout, LTC3884ERHE-1#TRPBF application, or LTC3884ERHE-1#TRPBF equivalent, this page delivers verified technical context, validated pin functions, confirmed sub-milliohm DCR sensing capability, real-time telemetry (VIN, IIN, VOUT, IOUT, temperature), and accurate PolyPhase current sharing up to 6 phases - all critical for high-density digital power design and AEC-Q100-compliant automotive subsystems.
Technical Context
The LTC3884ERHE-1#TRPBF implements a constant-frequency current-mode control architecture optimized for ultra-low-resistance inductor DCR sensing (down to 0.32mΩ), with programmable loop compensation via digital interface or EEPROM storage. Its three-state PWM outputs (PWM0/PWM1) support direct interfacing to DrMOS devices or external gate drivers without integrated MOSFET drivers.
It features independent fault management per channel (OV/UV/OC/OT), internal EEPROM with ECC and fault logging, time-based and voltage-based sequencing, and precise phase alignment (0°–300° programmable relative to SYNC). The device supports master/slave PolyPhase operation and includes an integrated input current sense amplifier with gain selection (2×/4×/8×).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 38V - enables single-rail operation from 5V systems up to 36V industrial buses. |
| Output Voltage Range | 0.5V to 5.5V - supports DDR memory, ASIC core, and FPGA I/O rails with low-DCR or resistor-based current sensing. |
| Output Voltage Accuracy | ±0.5% over –40°C to +125°C - ensures stable regulation under thermal stress without recalibration. |
| Current Sensing | Sub-milliohm DCR sensing down to 0.32mΩ - eliminates sense resistors, reduces power loss, and improves efficiency at high currents. |
| Telemetry Resolution | VOUT: 16-bit (244µV LSB); IOUT: 10-bit (15.63–125µV LSB); Temperature: 0.25°C - enables precise closed-loop monitoring and fault diagnostics. |
| PMBus Compliance | PMBus v1.3 compliant - supports standard commands (READ_VIN, READ_IOUT, STORE_DEFAULT_ALL) and fault logging via LTpowerPlay GUI. |
| Operating Junction Temp | –40°C to +125°C - qualified for automotive under-hood and industrial embedded environments. |
Pinout & Package
Package: 48-lead (5mm × 6mm) plastic GQFN with exposed SGND pad (Pin 49), θJA = 31°C/W, TJMAX = 125°C. Requires soldering of exposed pad to PCB for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGOOD0 / PGOOD1 | Open-drain power-good indicator | Asserts low when corresponding output is within ±7.5% of programmed VOUT - used for sequencing and system enable logic. |
| PWM0 / PWM1 | Three-state PWM output | Drives external DrMOS or power stages; high-impedance state enables seamless soft-start/stop and margining without shoot-through risk. |
| VSENSE0+/VSENSE0– VSENSE1+/VSENSE1– | Differential output voltage sense inputs | Enable Kelvin-connected remote sensing for <±0.5% accuracy; reject PCB trace IR drop. |
| ISENSE0+/ISENSE0– ISENSE1+/ISENSE1– | Differential current sense inputs | Accept sub-milliohm DCR or low-value resistor signals; support bidirectional current measurement with programmable gain. |
| TSNS0 / TSNS1 | External temperature sense inputs | Interface to NTC thermistors or diode-connected transistors; enable thermal derating and overtemperature shutdown. |
| SYNC | Phase synchronization input | Accepts external clock (200–1000kHz) to align switching edges across multiple controllers for EMI reduction. |
| SDA / SCL / ALERT / WP | PMBus interface pins | Support hot-plug capable I²C communication; ALERT signals fault events; WP enables write protection of EEPROM configuration. |
| RUN0 / RUN1 | Enable inputs | Active-high logic enables each channel independently; support staggered startup and fault isolation. |
Key Features
| Feature | Design Value |
|---|---|
| Digital loop compensation | Programmable gm and RTH values stored in EEPROM - eliminates external compensation components and enables dynamic tuning post-deployment. |
| Integrated input current sensing | On-chip amplifier with selectable gain (2×/4×/8×) and 10-bit readback - enables accurate input power limiting and telemetry without external op-amps. |
| EEPROM with ECC and fault logging | 10,000 write cycles, 10-year retention at ≤125°C, CRC-protected storage - preserves configuration and captures fault history across power cycles. |
| Accurate PolyPhase current sharing | ±1% matching across up to 6 phases - ensures balanced thermal loading and scalable high-current designs (e.g., 120A+ with 4-phase interleaving). |
| Programmable sequencing & margining | Voltage ramp rates, delay times, and ±5% margining via PMBus - supports DDR4/5 VDD/VDDQ tracking and ASIC supply validation. |
Applications
| Telecom Base Station Power | Data Center Point-of-Load |
|---|---|
Use Scenario: Dual-rail power delivery to FPGA and transceiver ICs in 5G macro base stations requiring tight voltage tolerance and thermal resilience. IC Role / Device Role / Timing Role: Dual-output PolyPhase controller managing 1.8V/12A and 3.3V/8A rails with synchronized switching and phase interleaving. Use Value: Sub-milliohm DCR sensing reduces heat generation by eliminating 5mΩ shunts; ±0.5% accuracy maintains signal integrity under wide ambient swings (–40°C to +85°C). |
Use Scenario: High-efficiency, digitally managed VR13/VR14-compatible power for server CPUs and accelerators with dynamic load steps. IC Role / Device Role / Timing Role: PMBus-configurable controller enabling real-time telemetry, adaptive voltage positioning (AVP), and fault-triggered throttling. Use Value: EEPROM-stored configurations allow firmware-updatable power policies; 16-bit VOUT readback enables closed-loop calibration during burn-in testing. |
| Automotive ADAS Domain Controller | Industrial PLC I/O Module |
Use Scenario: AEC-Q100 qualified power for radar SoCs and image signal processors in autonomous driving ECUs operating at 125°C junction. IC Role / Device Role / Timing Role: Dual-channel controller delivering 1.0V/25A and 1.8V/20A with independent fault reporting and thermal shutdown. Use Value: Internal temperature sensor + external TSNS inputs provide dual-point thermal monitoring; fault logging supports ISO 26262 diagnostic coverage analysis. |
Use Scenario: Robust, field-upgradable power for isolated analog I/O channels in programmable logic controllers exposed to 4kV EFT and wide input transients. IC Role / Device Role / Timing Role: Controller with VIN supervisor (4.5V–38V), input current limiting, and programmable UV/OV response timing. Use Value: Integrated input current sense amplifier enables precise input power capping; PMBus alerts notify host MCU of brownout or overcurrent before shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output digital PolyPhase controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2965GQ-10 | Lacks integrated input current sense amplifier; uses external resistor-based current sensing only; no internal EEPROM - configuration requires external nonvolatile memory. | Targeted at cost-sensitive consumer SSDs and mid-tier networking gear where telemetry depth is secondary to BOM count. | Select MP2965GQ-10 only if input current monitoring is unnecessary and external NVM integration is acceptable. |
| TDA3620 | Single-output controller; supports only one VOUT rail; no PMBus - uses proprietary SPI interface and lacks fault logging or digital compensation. | Suitable for simpler industrial SMPS where dual-rail coordination and digital diagnostics are not required. | Choose TDA3620 only for single-rail, non-networked applications where Analog Devices' full digital power ecosystem is not needed. |
Compared with MP2965GQ-10 and TDA3620, the LTC3884ERHE-1#TRPBF uniquely integrates input current sensing, on-die EEPROM with ECC, and true dual-rail PMBus-managed PolyPhase control - making it the only option among the three that supports AEC-Q100 automotive qualification, sub-milliohm DCR sensing, and complete telemetry-driven power management in a single package.
Availability
LTC3884ERHE-1#TRPBF is available at Aetrix Electronics and suitable for telecom base station power, data center point-of-load regulation, automotive ADAS domain controllers, and industrial PLC I/O modules requiring stable component supply, long-term lifecycle support, and guaranteed AEC-Q100 compliance.
Supply support for LTC3884ERHE-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 precision instrumentation, industrial automation, communications infrastructure, and automotive markets.
The LTC3884/LTC3884-1 product line was designed specifically for digitally managed, high-efficiency PolyPhase DC/DC conversion in space-constrained, thermally demanding applications - emphasizing telemetry fidelity, fault resilience, and configuration flexibility via PMBus.
FAQ
What is the key functional difference between LTC3884ERHE-1#TRPBF and LTC3884ERHE#TRPBF?
The LTC3884ERHE-1#TRPBF features three-state PWM outputs (PWM0/PWM1) for driving external DrMOS or power blocks, whereas the LTC3884ERHE#TRPBF includes integrated N-channel MOSFET gate drivers (TG0/TG1/BG0/BG1). This makes the -1 variant ideal for systems using smart power stages, while the base version targets discrete FET solutions. Both share identical PMBus functionality, EEPROM, and sensing architecture.
Does LTC3884ERHE-1#TRPBF support sub-milliohm DCR current sensing on both channels?
Yes, LTC3884ERHE-1#TRPBF supports sub-milliohm DCR current sensing on both output channels via dedicated differential inputs (ISENSE0± and ISENSE1±). The controller's unique sensing architecture achieves accurate current measurement down to 0.32mΩ DCR, eliminating the need for power-wasting sense resistors and improving overall system efficiency.
Can LTC3884ERHE-1#TRPBF operate without external EEPROM?
Yes, LTC3884ERHE-1#TRPBF contains internal EEPROM with ECC and 10-year data retention at ≤125°C. All configuration parameters - including VOUT setpoints, loop compensation, sequencing delays, and fault thresholds - can be stored directly in the device's on-chip memory, eliminating reliance on external nonvolatile storage.
What is the maximum number of phases supported by LTC3884ERHE-1#TRPBF in PolyPhase operation?
LTC3884ERHE-1#TRPBF supports accurate PolyPhase current sharing across up to 6 phases using the SHARE_CLK pin and master/slave configuration. Phase offsets are programmable in 60° increments (0°–300°), enabling optimal ripple cancellation and thermal distribution in high-current applications such as GPU or AI accelerator power supplies.
Is LTC3884ERHE-1#TRPBF qualified for automotive applications?
Yes, LTC3884ERHE-1#TRPBF is AEC-Q100 qualified for automotive applications (Grade 1: –40°C to +125°C). It includes built-in fault logging, dual-point temperature monitoring (internal + external), and robust input supervision - meeting critical requirements for ADAS domain controllers, infotainment power, and body electronics in modern vehicles.
LTC3884ERHE-1#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- PolyPhase®
- Package/Case:
- 48-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 ~ 38V
- Frequency - Switching:
- 200kHz ~ 1MHz
- 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 ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-GQFN (5x6)
LTC3884ERHE-1#TRPBF FAQ
1.How can I place an order for LTC3884ERHE-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3884ERHE-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 LTC3884ERHE-1#TRPBF reliable?
The price and inventory of LTC3884ERHE-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 LTC3884ERHE-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3884ERHE-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3884ERHE-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3884ERHE-1#TRPBF?
LTC3884ERHE-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3884ERHE-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 LTC3884ERHE-1#TRPBF?
For technical support, including LTC3884ERHE-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3884ERHE-1#TRPBF requirements.
6.How does Aetrix verify that LTC3884ERHE-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3884ERHE-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 LTC3884ERHE-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3884ERHE-1#TRPBF?
All LTC3884ERHE-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3884ERHE-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 LTC3884ERHE-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC3884ERHE-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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