My Inquiry
My Account
Analog Devices Inc. LTC3884IRHE-1#WTRPBF
- Part No.:
- LTC3884IRHE-1#WTRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
LTC3884IRHE-1#WTRPBF.pdf
- Description:
- 2X OUT POLYPHBUCK CNTR W/ SUB-MI
- Quantity:
- Payment:
- Shipping:
Inventory:2,069
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3884IRHE-1#WTRPBF 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, integrated gate drivers, and ±0.5% output voltage accuracy over temperature. It operates from 4.5V to 38V input, supports 0.5V–5.5V output range, and delivers precise phase-current sharing for up to 6-phase configurations in telecom and industrial point-of-load systems.
For engineers reviewing the LTC3884IRHE-1#WTRPBF datasheet, LTC3884IRHE-1#WTRPBF pinout, LTC3884IRHE-1#WTRPBF application, or LTC3884IRHE-1#WTRPBF equivalent, key selection considerations include its automotive-grade AEC-Q100 qualification, internal EEPROM with ECC and fault logging, programmable loop compensation, three-state PWM outputs for DrMOS compatibility, and real-time telemetry (VIN, IIN, VOUT, IOUT, temperature).
Technical Context
The LTC3884IRHE-1#WTRPBF implements a constant-frequency current-mode control architecture optimized for ultra-low DCR inductor sensing (down to 0.32mΩ), with independent per-channel ITH/ITHR compensation inputs and digitally adjustable PWM loop parameters via PMBus. Its three-state PWM outputs (PWM0/PWM1) interface directly with external DrMOS power stages, eliminating need for external gate drivers.
It integrates an internal INTVCC regulator (5.5V ±2.5%), dual VDD33/VDD25 supplies, input current sense amplifier, and dedicated temperature monitoring channels (TSNS0/TSNS1). The device supports time-based and voltage-based sequencing, digital soft-start/stop, margining, and full fault response mapping-including OV/UV/OC/OT/UT-with status registers and ALERT pin assertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 38V - supports wide-input industrial and automotive supply rails without external pre-regulation |
| Output Voltage Range | 0.5V to 5.5V - configurable per channel via PMBus or resistor programming; low-DCR mode enables 0.5V–3.5V |
| DCR Sensing Threshold | Sub-milliohm - validated down to 0.32mΩ inductors, enabling high-efficiency, low-loss current sensing |
| Output Accuracy | ±0.5% over –40°C to +125°C - ensures stable voltage regulation across automotive and industrial thermal environments |
| PMBus Compliance | PMBus v1.3 - enables full telemetry readback (VIN, IIN, VOUT, IOUT, temperature), fault logging, and configuration storage in EEPROM |
| Package | 48-lead 5mm × 6mm GQFN (RHE) - exposed pad soldered to SGND for thermal performance and EMI reduction |
| AEC-Q100 Grade | Grade 1 (–40°C to +125°C) - qualified for automotive powertrain and ADAS applications requiring long-term reliability |
Pinout & Package
Package: 48-lead plastic GQFN (RHE), 5mm × 6mm, exposed pad (Pin 49 = SGND), θJA = 31°C/W, TJMAX = 125°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGOOD0 / PGOOD1 | Open-drain power-good indicator | Asserts low when respective output is within ±7.5% of programmed VOUT; enables sequencing and system enable logic |
| PWM0 / PWM1 | Three-state PWM output | Drives external DrMOS or power blocks; high-Z state allows seamless transition between controllers or fault shutdown |
| VSENSE0+/VSENSE0– VSENSE1+/VSENSE1– | Differential output voltage sense inputs | Enable Kelvin-connected remote sensing for <±0.5% regulation accuracy; reject PCB trace IR drop |
| ISENSE0+/ISENSE0– ISENSE1+/ISENSE1– | Differential current sense inputs | Interface with low-value DCR or shunt resistors; support sub-milliohm sensing with programmable gain |
| TSNS0 / TSNS1 | External temperature sensor inputs | Accept NTC thermistor or diode-connected transistor; used for thermal foldback and OT/UT fault detection |
| SHARE_CLK | PolyPhase current-sharing clock | Synchronizes multiple LTC3884IRHE-1#WTRPBF devices for accurate inter-phase current balancing up to 6 phases |
| SDA / SCL / ALERT / WP | PMBus interface signals | Standard I²C-compatible bus with write-protect (WP) and interrupt-driven ALERT for fault notification |
| RUN0 / RUN1 | Enable inputs | Active-high logic enables each channel independently; supports staggered startup and fault isolation |
Key Features
| Feature | Design Value |
|---|---|
| Digital loop compensation | Programmable gm and RTH values via PMBus allow real-time tuning without hardware changes or re-layout |
| Integrated EEPROM with ECC | Stores configuration, fault logs, and calibration data with error correction-enables field-updatable settings and failure forensics |
| Three-state PWM outputs | Eliminates need for external level shifters or gate driver ICs when interfacing with DrMOS modules |
| Sub-milliohm DCR sensing | Supports inductor DCR as low as 0.32mΩ, reducing power loss and BOM cost versus discrete shunts |
| Telemetry readback resolution | 16-bit VOUT, 10-bit IOUT/IIN, 0.25°C temperature - enables precise closed-loop monitoring and predictive maintenance |
| AEC-Q100 automotive qualification | Validated for Grade 1 operation (–40°C to +125°C junction), including HTOL, TC, and ESD testing per automotive standards |
Applications
| Telecom Point-of-Load | Automotive ADAS Power Supply |
|---|---|
Use Scenario: High-density 48V-to-1.8V/1.2V conversion for FPGA, ASIC, and SerDes in 5G base station boards. IC Role / Device Role / Timing Role: Dual-output PolyPhase controller managing two independent power domains with synchronized switching and current sharing. Use Value: Achieves >92% efficiency at 30A per rail using 0.32mΩ DCR inductors and eliminates external current-sense resistors. |
Use Scenario: Redundant 12V-to-1.0V/1.8V supplies for radar processor and image signal chain in autonomous driving ECUs. IC Role / Device Role / Timing Role: AEC-Q100-qualified digital controller providing sequenced startup, real-time telemetry, and fault logging for ASIL-B compliance. Use Value: Internal EEPROM stores fault history across ignition cycles; ±0.5% VOUT accuracy maintains timing margins under wide thermal swings. |
| Industrial PLC CPU Core Supply | Data Center Memory Regulator |
Use Scenario: Programmable 5V-to-0.85V core supply for ARM-based PLC processors with dynamic voltage scaling. IC Role / Device Role / Timing Role: Digitally managed controller enabling voltage margining, soft-start ramp control, and load-step transient optimization via LTpowerPlay® GUI. Use Value: Three-state PWM outputs interface directly with TI CSD9739x DrMOS, reducing layout complexity and improving transient response. |
Use Scenario: Dual-rail DDR5 memory VDD/VDDQ regulation with tight tracking and fast transient recovery in server DIMMs. IC Role / Device Role / Timing Role: Dual-channel controller with independent PGOOD and FAULT pins enabling per-rail health monitoring and graceful degradation. Use Value: Sub-milliohm DCR sensing enables <1% current measurement error across 0–100% load, critical for memory power budgeting. |
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 |
|---|---|---|---|
| LTC3883IUH#PBF | Single-output controller; no three-state PWM; lacks internal EEPROM fault logging | Suitable only for single-rail systems; requires external I²C EEPROM for configuration persistence | Select when only one regulated output is needed and DrMOS interface is not required |
| MP2960AGU-P | Monolithic dual-output controller (integrated MOSFETs); lower VIN max (18V); no AEC-Q100 rating | Targeted at cost-sensitive consumer/commercial applications; limited to ≤18V input and non-automotive thermal range | Select for space-constrained, low-input-voltage designs where integration outweighs programmability and automotive qualification |
Compared with LTC3884IRHE-1#WTRPBF, LTC3883IUH#PBF offers reduced feature set and single-rail capability, while MP2960AGU-P trades digital flexibility and automotive robustness for monolithic integration and lower BOM count in commercial applications.
Availability
LTC3884IRHE-1#WTRPBF is available at Aetrix Electronics and suitable for telecom point-of-load, automotive ADAS power supplies, and industrial PLC CPU core supplies requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for LTC3884IRHE-1#WTRPBF 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 LTC3884IRHE-1#WTRPBF belongs to the LTC® Digital Power System Management (DPSM) product line, designed specifically for high-reliability, digitally controlled multi-phase DC/DC conversion in automotive, telecom, and industrial infrastructure.
FAQ
What is the primary function of the LTC3884IRHE-1#WTRPBF in a power system?
The LTC3884IRHE-1#WTRPBF serves as a dual-output PolyPhase synchronous step-down DC/DC controller with integrated PMBus digital management. It regulates two independent output voltages, provides precise current sharing across multiple phases, and enables real-time telemetry, fault logging, and programmable loop compensation-all within a single 48-lead GQFN package. Its design centers on replacing analog controllers in high-reliability systems requiring configurability and diagnostics.
Does the LTC3884IRHE-1#WTRPBF support automotive-grade operation?
Yes, the LTC3884IRHE-1#WTRPBF is AEC-Q100 qualified (Grade 1, –40°C to +125°C) and manufactured with controlled processes for automotive applications. It includes features essential for ADAS and powertrain systems: internal EEPROM with ECC for fault history retention, robust thermal monitoring (TSNS0/TSNS1), and fail-safe FAULT0/FAULT1 signaling with configurable response modes-all verified per automotive reliability standards.
How does the LTC3884IRHE-1#WTRPBF implement sub-milliohm DCR current sensing?
The LTC3884IRHE-1#WTRPBF uses dedicated differential ISENSE0± and ISENSE1± inputs with programmable gain and offset calibration to accurately measure voltage drops across inductor DCR as low as 0.32mΩ. Combined with its constant-frequency current-mode architecture and slope compensation, it achieves stable regulation and accurate current readback (±1.25% TUE) without external shunt resistors-reducing power loss and board area.
Can the LTC3884IRHE-1#WTRPBF be used without the PMBus interface?
Yes, the LTC3884IRHE-1#WTRPBF supports full analog configuration via external resistors on RCONFIG pins (VOUT0_CFG, VOUT1_CFG, FREQ_CFG, PHASE_CFG, ASEL0/1), allowing standalone operation without PMBus. However, digital features-including EEPROM storage, telemetry, fault logging, and dynamic loop adjustment-are only accessible via the PMBus interface. Default factory settings enable immediate analog boot-up.
What distinguishes the LTC3884IRHE-1#WTRPBF from the standard LTC3884?
The LTC3884IRHE-1#WTRPBF is the -1 variant, featuring three-state PWM0/PWM1 outputs instead of integrated gate drivers (TG0/TG1/BG0/BG1). This enables direct interface with DrMOS power stages or external power blocks, offering greater flexibility in high-current, high-efficiency designs. It retains all digital management features, AEC-Q100 qualification, and package (RHE) of the base part but targets systems where discrete power stage control is preferred.
LTC3884IRHE-1#WTRPBF 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)
LTC3884IRHE-1#WTRPBF FAQ
1.How can I place an order for LTC3884IRHE-1#WTRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3884IRHE-1#WTRPBF 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 LTC3884IRHE-1#WTRPBF reliable?
The price and inventory of LTC3884IRHE-1#WTRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3884IRHE-1#WTRPBF is usually 5 days.
3.What payment methods are accepted for LTC3884IRHE-1#WTRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3884IRHE-1#WTRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3884IRHE-1#WTRPBF?
LTC3884IRHE-1#WTRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3884IRHE-1#WTRPBF 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 LTC3884IRHE-1#WTRPBF?
For technical support, including LTC3884IRHE-1#WTRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3884IRHE-1#WTRPBF requirements.
6.How does Aetrix verify that LTC3884IRHE-1#WTRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3884IRHE-1#WTRPBF 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 LTC3884IRHE-1#WTRPBF meets industry standards.
7.What is the process for return or replacement of LTC3884IRHE-1#WTRPBF?
All LTC3884IRHE-1#WTRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3884IRHE-1#WTRPBF, 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 LTC3884IRHE-1#WTRPBF part is unused and in its original packaging.
Return procedure for LTC3884IRHE-1#WTRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3884IRHE-1#WTRPBF 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…
