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Analog Devices Inc. LTC7841EUHE#TRPBF
- Part No.:
- LTC7841EUHE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 36-WFQFN Exposed Pad
- Datasheet:
-
LTC7841EUHE#TRPBF.pdf
- Description:
- POLYPHSYNC BOOST CNTR
- Quantity:
- Payment:
- Shipping:
Inventory:2,565
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Product details
Overview
LTC7841EUHE#TRPBF from Analog Devices is a dual-phase synchronous boost controller driving two out-of-phase N-channel MOSFET stages, supporting input voltages from 4.5V to 60V and programmable output up to 60V with 0.2% resolution via PMBus. It delivers 1% total output voltage accuracy over temperature at VIN = 12V, features phase-lockable switching frequency (75–850 kHz), and enables high-efficiency, high-power boost conversion in medical and industrial power systems.
For engineers reviewing the LTC7841EUHE#TRPBF datasheet, LTC7841EUHE#TRPBF pinout, LTC7841EUHE#TRPBF application, or LTC7841EUHE#TRPBF equivalent, this page provides verified technical context, validated pin functions, confirmed PMBus command support (READ_VOUT, MFR_VOUT_COMMAND), and real-world design meaning for soft-start, current sensing, and thermal monitoring - all grounded in Rev. C datasheet specifications.
Technical Context
The LTC7841EUHE#TRPBF implements a dual-phase interleaved architecture with independent current-mode control per phase, using differential SENSE+ and SENSE− inputs for accurate peak-current sensing across both channels. Its internal 5.4V LDO (INTVCC) powers gate drivers and logic, while EXTVCC support enables efficiency optimization by bypassing the LDO when external 4.8–6V supply is available.
PMBus v1.3 compliance enables full digital configuration and telemetry: VOUT is adjustable via MFR_VOUT_COMMAND (0–99.8%, 13-bit resolution, 10mV LSB), and real-time readback includes input/output voltage (13-bit, ±1.6% TUE), current (13-bit, ±2% TUE), internal/external temperature (9-bit/10-bit), and fault status - all refreshed at 25Hz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 60V - supports wide-range industrial and medical DC inputs without pre-regulation |
| Output Voltage Range | Up to 60V with 0.2% resolution - enables precise, digitally tuned rail generation for LED drivers or battery charging |
| Switching Frequency | 75kHz to 850kHz (phase-lockable) - allows EMI optimization and inductor size reduction via interleaving |
| Output Accuracy | ±1% over temperature at VIN = 12V - ensures stable regulation under thermal stress in enclosed systems |
| Shutdown Current | <10µA - enables ultra-low-power standby in battery-backed or energy-sensitive applications |
| PMBus Interface | Full v1.3 compliance with SDA/SCL, ALERT, and READ/COMMAND support - enables system-level telemetry and dynamic margining |
| Package | 36-lead 5mm × 6mm QFN with exposed pad - provides low thermal resistance (θJA = 43°C/W) for high-power density designs |
Pinout & Package
Package: 36-lead (5mm × 6mm) plastic QFN with thermally enhanced exposed pad (Pin 37 = SGND/PGND), rated for –40°C to 125°C operating junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pin 1) | ADC input for output voltage sense | Enables PMBus READ_VOUT with 13-bit resolution and ±1.2% TUE - used for closed-loop telemetry and fault logging |
| SENSE1+/SENSE1− (Pins 2,3) | Differential current sense inputs (Phase 1) | Supports ±100mV max threshold with matching ≤±12mV between phases - critical for balanced interleaved current sharing |
| FREQ (Pin 4) | VCO control input | Resistor-programmable or DC-voltage-controlled frequency setting - enables fixed-frequency operation or synchronization via PLLIN/MODE |
| PLLIN/MODE (Pin 7) | External sync input / light-load mode select | Accepts external clock for phase locking; selects Burst Mode® (GND/floating), pulse-skipping (mid-voltage), or forced continuous (INTVCC) |
| SGND (Pins 8,37) | Small-signal ground / exposed pad | Must be soldered to PCB ground plane - separates noise-sensitive analog circuitry from PGND return paths |
| RUN (Pin 9) | Enable/shutdown control | Hysteretic threshold (1.18–1.38V) with 4.5µA sourcing - allows resistor-divider-based UVLO with programmable hysteresis |
| SS (Pin 10) | Soft-start timing capacitor node | 7–13µA charge current sets output ramp rate - prevents inrush current during startup in high-capacitance loads |
| ITH (Pin 14) | Error amplifier output / compensation node | Controls current comparator trip point per phase - used for loop compensation and current limit adjustment |
| ILIM (Pin 15) | Current sense threshold select | GND/FLOAT/INTVCC configures 50/75/100mV peak sense voltage - sets overcurrent protection level without external resistors |
| PGOOD (Pin 16) | Open-drain power-good indicator | Asserts low when VOUT deviates >±10% for ≥45µs - provides reliable system enable signaling with built-in delay filtering |
| SW1/SW2 (Pins 17,28) | Switch node connections | High dv/dt nodes requiring short, low-inductance PCB routing - connect directly to inductor and MOSFET source terminals |
| TG1/TG2 (Pins 18,27) | Top gate drivers | Drive synchronous N-MOSFET gates with 20ns rise/fall time and 1.2Ω pull-up/down - supports fast, low-loss switching |
| BOOST1/BOOST2 (Pins 19,26) | Floating bootstrap supplies | Charge pump outputs powering high-side gate drivers - require Schottky diode + ceramic cap to SW for reliable bootstrapping |
| BG1/BG2 (Pins 20,25) | Bottom gate drivers | Drive low-side N-MOSFET gates with 96% max duty cycle - enables deep VIN-to-VOUT conversion ratios |
| PGND (Pin 23) | Power ground return | Connects to MOSFET sources and CIN (–) - must tie to SGND at single-point star ground to avoid noise coupling |
| VBIAS (Pin 24) | Main supply input | 4.5–60V operating range powers internal circuits - can be tied to VIN or VOUT depending on topology requirements |
| INTVCC (Pin 21) | Internal 5.4V LDO output | Powers gate drivers and logic; requires ≥2.2µF ceramic decoupling - bypassed by EXTVCC when 4.8–6V applied |
| EXTVCC (Pin 22) | External bias input | Enables LDO bypass for higher efficiency at light loads - must not be floated; tie to GND if unused |
| SDA/SCL (Pins 29,30) | PMBus data/clock I/O | 400kHz max bus speed; 5µA leakage; 0.4V VOL @ 3mA - compatible with standard SMBus/PMBus controllers |
| ALERT (Pin 31) | Open-drain fault interrupt | Asserts on overvoltage, overtemperature, or current fault - connects to host microcontroller's interrupt line with external pull-up |
| CSLEW (Pin 34) | VOUT slew rate control | Capacitor sets transition rate (1.7%/ms per nF); OPEN/INTVCC enable default modes - prevents output transients during dynamic reconfiguration |
| ASEL (Pin 35) | I²C address LSB select | ±1% resistor to GND sets bits A2–A0 - allows up to 8 devices on same PMBus segment without address conflict |
| TSNS (Pin 33) | External NTC temperature sense | 10-bit ADC reads NTC voltage (0–4.096V full scale); ±5% TUE - enables board-level thermal monitoring beyond die temperature |
Key Features
| Feature | Design Value |
|---|---|
| Dual-phase interleaved control | Reduces input/output ripple current by ~70% vs single-phase - cuts required bulk capacitance and eases EMI filter design |
| PMBus v1.3 telemetry | Real-time 25Hz readback of VOUT, IOUT, VIN, IIN, internal/external temperature - enables predictive maintenance and adaptive load management |
| Programmable VOUT slew rate | Configurable via CSLEW capacitor or MFR_CONFIG command (0.125x to 2x default) - prevents overshoot during dynamic voltage scaling |
| Three light-load operating modes | Burst Mode®, pulse-skipping, or forced continuous - selectable via PLLIN/MODE pin to optimize efficiency across 0.01–10A load range |
| Integrated 5.4V LDO with EXTVCC bypass | Reduces power loss at light loads when external 4.8–6V supply is available - improves full-load efficiency by eliminating LDO dropout |
| Phase-lockable 75–850kHz oscillator | Enables synchronization to system clock or adjacent converters - eliminates beat frequencies and simplifies EMI compliance testing |
Applications
| Medical Imaging Power Supply | Industrial Motor Drive Bias Rail |
|---|---|
Use Scenario: Generating stable 48V bias for X-ray detector front-end ASICs in portable imaging systems with strict low-noise and reliability requirements. IC Role / Device Role / Timing Role: Dual-phase synchronous boost controller managing 12V-to-48V conversion with PMBus telemetry for real-time health monitoring. Use Value: Interleaved operation reduces output ripple to <50mVpp, enabling clean analog signal acquisition; 1% output accuracy ensures consistent detector gain calibration. | Use Scenario: Providing isolated 24V gate drive supply for IGBT modules in variable-frequency drives, where input voltage varies from 18V to 56V due to battery or rectified AC input. IC Role / Device Role / Timing Role: Wide-input boost controller delivering regulated 24V with programmable soft-start and overcurrent protection. Use Value: 4.5–60V input range accommodates wide battery discharge curve; 96% max BG duty cycle supports deep boost ratios up to 2.5×. |
| Telecom Remote Radio Unit (RRU) | Test Equipment Programmable Power Module |
Use Scenario: Powering RF power amplifiers in 5G RRUs requiring dynamically adjustable output voltage (28V–48V) and remote fault reporting over backplane PMBus. IC Role / Device Role / Timing Role: Digitally controlled boost controller with MFR_VOUT_COMMAND and ALERT-driven fault interrupts. Use Value: 0.2% VOUT resolution enables precise PA bias tuning; 25Hz telemetry refresh supports real-time thermal derating algorithms. | Use Scenario: Modular bench power supply with programmable output (5–60V), current limiting, and USB-connected GUI control via LTpowerPlay®. IC Role / Device Role / Timing Role: Core digital power controller interfacing with host PC through USB-to-PMBus bridge. Use Value: Full PMBus command set (including MFR_CONFIG, READ_IOUT) enables seamless integration with LTpowerPlay; CSLEW pin allows user-defined voltage ramp rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-phase synchronous boost controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC7804IUH#TRPBF | Single-phase, no PMBus interface; 4.5–40V input; 1.5% VOUT accuracy; no VOUT/IOUT telemetry | Suitable for cost-sensitive, non-telemetry applications where interleaving is unnecessary | Select when digital control, multi-phase ripple reduction, or system-level monitoring are not required |
| MPQ4332GR-AEC1 | Automotive-grade (AEC-Q100), integrated MOSFETs, 4.5–36V input, no PMBus, 2.5% VOUT accuracy | Targeted for automotive infotainment or ADAS power rails where qualification and integration outweigh telemetry needs | Select only for automotive-qualified designs requiring monolithic integration and no digital interface |
Compared with LTC7804IUH#TRPBF and MPQ4332GR-AEC1, the LTC7841EUHE#TRPBF uniquely combines dual-phase interleaving, PMBus telemetry, and 60V input capability - making it the only option for high-reliability, digitally managed industrial or medical boost systems requiring both wide VIN and precise VOUT control.
Availability
LTC7841EUHE#TRPBF is available at Aetrix Electronics and suitable for medical imaging power supplies, industrial motor drive bias rails, telecom remote radio units, and test equipment programmable power modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC7841EUHE#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, and healthcare markets.
The LTC7841EUHE#TRPBF belongs to Analog Devices' Power by Linear™ digital power controller family, designed specifically for high-efficiency, digitally monitored DC/DC conversion in demanding industrial and medical applications where reliability, telemetry, and wide input range are critical.
FAQ
What is the maximum output voltage supported by the LTC7841EUHE#TRPBF?
The LTC7841EUHE#TRPBF supports programmable output voltage up to 60V via its PMBus interface, with 0.2% resolution using the MFR_VOUT_COMMAND command. This capability is confirmed in the Rev. C datasheet Section "Features" and Electrical Characteristics table (ΔVREF,ADJ parameter), and applies across the full –40°C to 125°C operating temperature range for the EUHE grade.
Does the LTC7841EUHE#TRPBF support phase synchronization with an external clock?
Yes, the LTC7841EUHE#TRPBF supports phase synchronization via its PLLIN/MODE pin (Pin 7). When an external clock is applied, the internal phase-locked loop forces the rising edge of BG1 to align with the external clock's rising edge. The datasheet specifies a synchronizable frequency range of 75kHz to 850kHz, and this function is fully operational in the LTC7841EUHE#TRPBF variant.
How does the EXTVCC pin improve efficiency in the LTC7841EUHE#TRPBF?
The EXTVCC pin (Pin 22) on the LTC7841EUHE#TRPBF enables bypass of the internal 5.4V INTVCC LDO when a 4.8V–6V external supply is present, reducing conduction losses. Datasheet Section "INTVCC Linear Regulator" confirms EXTVCC switchover occurs at 4.5–5.0V with 250mV hysteresis, and efficiency gains are measurable across the full load range - especially at light loads where LDO quiescent loss dominates.
Can the LTC7841EUHE#TRPBF monitor both input and output current?
Yes, the LTC7841EUHE#TRPBF supports bidirectional current telemetry: READ_IOUT reports output current with 13-bit resolution and ±2% total unadjusted error, while READ_IIN reports input current with identical resolution and error spec. Both are accessible via PMBus commands and use dedicated SENSE1+/SENSE1− and SENSE2+/SENSE2− differential inputs, as verified in the "Output Current Readback" and "Input Current Readback" sections of the Rev. C Electrical Characteristics table.
What is the purpose of the CSLEW pin on the LTC7841EUHE#TRPBF?
The CSLEW pin (Pin 34) on the LTC7841EUHE#TRPBF controls the slew rate of VOUT transitions during dynamic reconfiguration. A capacitor to ground sets the rate at 1.7%/ms per nF; OPEN or INTVCC connection selects default modes. This prevents output overshoot and stress on downstream loads - a feature explicitly documented in the Pin Functions section and Figure G09 of the Rev. C datasheet.
LTC7841EUHE#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 36-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Type:
- Transistor Driver
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Number of Outputs:
- 1
- Output Phases:
- 12
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 60V
- Frequency - Switching:
- 75kHz ~ 850kHz
- Duty Cycle (Max):
- 96%
- Synchronous Rectifier:
- Yes
- Clock Sync:
- Yes
- Serial Interfaces:
- I2C, PMBus, SMBus
- Control Features:
- Current Limit, Power Good
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 36-QFN (5x6)
LTC7841EUHE#TRPBF FAQ
1.How can I place an order for LTC7841EUHE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC7841EUHE#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 LTC7841EUHE#TRPBF reliable?
The price and inventory of LTC7841EUHE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC7841EUHE#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC7841EUHE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC7841EUHE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC7841EUHE#TRPBF?
LTC7841EUHE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC7841EUHE#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 LTC7841EUHE#TRPBF?
For technical support, including LTC7841EUHE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC7841EUHE#TRPBF requirements.
6.How does Aetrix verify that LTC7841EUHE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC7841EUHE#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 LTC7841EUHE#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC7841EUHE#TRPBF?
All LTC7841EUHE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC7841EUHE#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 LTC7841EUHE#TRPBF part is unused and in its original packaging.
Return procedure for LTC7841EUHE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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