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Analog Devices Inc. LT8210EUJ#TRPBF
- Part No.:
- LT8210EUJ#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
LT8210EUJ#TRPBF.pdf
- Description:
- 100V BUCK/BOOST CTLR WITH PASS-T
- Quantity:
- Payment:
- Shipping:
Inventory:4,918
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Product details
Overview
LT8210EUJ#TRPBF from Analog Devices is a 100V input/output 4-switch synchronous buck-boost DC/DC controller with programmable non-switching pass-thru mode, ±1.25% output voltage accuracy over –40°C to 125°C, 80kHz–400kHz adjustable switching frequency, and reverse input protection down to –40V. It enables high-efficiency power conversion in automotive start-stop and ISO 7637-compliant industrial systems.
For engineers reviewing the LT8210EUJ#TRPBF datasheet, LT8210EUJ#TRPBF pinout, LT8210EUJ#TRPBF application, or LT8210EUJ#TRPBF equivalent, key selection criteria include pass-thru window programming, ±3% current monitoring accuracy, GATEVCC regulation at 10.6V for standard-level MOSFETs, EXTVCC switchover at 8V, and 18μA quiescent current in pass-thru mode.
Technical Context
The LT8210EUJ#TRPBF implements dual-loop control: FB1 regulates output voltage in buck, boost, and buck-boost regions using CCM/DCM/Burst Mode®, while FB2 governs the buck loop during pass-thru operation. Its pass-thru transfer characteristic activates when VIN falls within a user-defined window relative to VOUT, bypassing switching entirely.
It integrates independent gate drivers (TG1/TG2/BG1/BG2) with 3Ω pull-up and 1Ω pull-down resistance, supports cycle-by-cycle inductor current limiting with ±20% tolerance, and features back-drive-protected GATEVCC regulation that sustains 10.6V output during input brownouts when powered from VINP or EXTVCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.8V to 100V (4.5V min for start-up); supports wide-input automotive and industrial rails. |
| VOUT Range | 1V to 100V; enables flexible output configuration across buck, boost, and pass-thru modes. |
| Pass-Thru IQ | 18μA at VINP = 48V; minimizes standby power loss in always-on vehicle systems. |
| Output Accuracy | ±1.25% over –40°C to 125°C; ensures stable regulation under extreme environmental conditions. |
| Current Monitoring | ±3% accuracy for average output/input current; enables precise OCP and load management. |
| Switching Frequency | 80kHz to 400kHz, RT-set or synchronized; allows EMI optimization and inductor size trade-offs. |
| Reverse Protection | Supports –40V input with external N-MOSFET; meets ISO 16750-2 transient immunity requirements. |
Pinout & Package
The LT8210EUJ#TRPBF is housed in a 40-lead (6mm × 6mm) plastic QFN package with exposed pad (Pin 41 = GND), optimized for thermal performance and high-voltage isolation in dense PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN/UVLO (Pin 37) | Enable & UVLO Input | Enables device above 1.45V; tolerates –40V; sets startup threshold via resistor divider. |
| MODE1/MODE2 (Pins 40/39) | Operating Mode Control | Selects CCM, DCM, Burst Mode®, or pass-thru via logic levels per Table 1 in datasheet. |
| FB1/FB2 (Pins 31/30) | Voltage Feedback Inputs | FB1 regulates output in switching modes; FB2 controls buck loop in pass-thru mode. |
| IMON (Pin 7) | Current Monitor Output | Sources current proportional to SNSP2–SNSN2; transitions to current regulation at 1.01V. |
| TG1/TG2/BG1/BG2 (Pins 27/24/21/18) | MOSFET Gate Drivers | 10V quad N-channel drivers with 3Ω/1Ω pull-up/pull-down; support high-side bootstrap operation. |
| VINP (Pin 23) | Input Sense for Pass-Thru | Monitors input voltage independently for accurate pass-thru window detection and regulation. |
| GATEVCC (Pin 16) | Gate Driver Supply Regulator | Regulated 10.6V output; powers drivers from VINP or EXTVCC; back-drive protected during brownout. |
| EXTVCC (Pin 15) | External Driver Supply Input | Accepts 7.3V–8.8V input; triggers switchover from VINP to improve efficiency at higher VIN. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Pass-Thru Window | User-definable VIN range where input passes directly to output-eliminating switching losses and EMI. |
| Precision Current Monitoring | ±3% accurate average current sensing on input or output; enables robust OCP and load balancing. |
| Reverse Input Protection | Supports –40V transients with single external N-MOSFET; satisfies MIL-STD-1275 and ISO 16750-2. |
| Spread Spectrum Modulation | Reduces peak EMI by modulating fSW up to ±12.5%; enabled via SYNC/SPRD pin tied to VDD. |
| Back-Drive Protected GATEVCC | Maintains 10.6V gate drive during VINP brownout; prevents MOSFET turn-off during input dips. |
Applications
| Automotive Start-Stop Systems | Avionics Power Distribution |
|---|---|
Use Scenario: Maintaining stable 28V supply during engine cranking when battery voltage drops to 4V–6V. IC Role / Device Role / Timing Role: Buck-boost controller with pass-thru mode activated only when VIN ≈ VOUT; regulates output during deep brownout. Use Value: Delivers >99.9% efficiency in pass-thru, extends battery life and avoids system reset during cold-crank events. | Use Scenario: Converting 28V aircraft bus to regulated 12V/24V rails for flight-critical avionics modules. IC Role / Device Role / Timing Role: High-reliability DC/DC controller supporting DO-160 Section 16 surge immunity and MIL-STD-704 compliance. Use Value: Withstands –40V reverse transients and 100V surges; ensures uninterrupted power during lightning-induced transients. |
| Industrial Telecom Power | Emergency Call (eCall) Modules |
Use Scenario: Providing isolated 48V output from variable 36V–72V telecom rectifier input with low-noise operation. IC Role / Device Role / Timing Role: Synchronous buck-boost controller operating in CCM with spread-spectrum modulation. Use Value: Achieves <10mVpp output ripple and <–60dBc conducted EMI-meeting GR-1089-CORE requirements. | Use Scenario: Powering GSM/LTE modem and GPS receiver in vehicle-mounted eCall units with battery backup. IC Role / Device Role / Timing Role: Dual-mode controller: pass-thru during normal operation (VIN ≈ 12.8V), buck-boost during battery discharge (VIN < 11V). Use Value: 18μA pass-thru IQ extends backup runtime; ±1.25% VOUT accuracy ensures reliable modem RF performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3789EFE#TRPBF | 4-switch buck-boost controller with 4V–60V VIN, no pass-thru mode, fixed 300kHz fSW, no reverse input protection. | Lacks pass-thru and –40V reverse capability; suited for lower-voltage industrial supplies without ISO 16750 compliance needs. | Select when pass-thru efficiency and reverse protection are not required, and input stays within 4V–60V range. |
| LM5170QPWPRQ1 | 4-switch controller with 4.5V–65V VIN, integrated current sense amplifiers, AEC-Q100 qualified, but no pass-thru or reverse protection. | Designed for automotive but lacks pass-thru window and –40V reverse tolerance; requires external circuitry for reverse blocking. | Choose for AEC-Q100-compliant designs needing high-current capability (up to 20A), where pass-thru is secondary. |
Compared with LTC3789EFE#TRPBF and LM5170QPWPRQ1, the LT8210EUJ#TRPBF uniquely delivers non-switching pass-thru operation with 18μA IQ and –40V reverse input tolerance-critical for ISO 7637-2 pulse 4 and ISO 16750-2 transient survival in automotive and avionics.
Availability
LT8210EUJ#TRPBF is available at Aetrix Electronics and suitable for automotive start-stop, avionics power distribution, and industrial telecom power systems requiring stable component supply across extended temperature and voltage ranges.
Supply support for LT8210EUJ#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, and automotive safety markets.
The LT8210EUJ#TRPBF belongs to Analog Devices' Power by Linear™ controller family, engineered specifically for high-voltage, high-reliability DC/DC conversion in harsh environments including automotive, aerospace, and military applications.
FAQ
What is the maximum input voltage rating for the LT8210EUJ#TRPBF?
The LT8210EUJ#TRPBF supports an absolute maximum input voltage of 100V on VIN and VINP pins, with operational input range from 2.8V to 100V (4.5V minimum for start-up). This enables direct integration into 48V and 60V industrial buses and 24V/48V automotive architectures without external pre-regulation.
How does the pass-thru mode function in the LT8210EUJ#TRPBF?
The LT8210EUJ#TRPBF enters pass-thru mode when VIN falls within a user-programmed window relative to VOUT-determined by FB1 and FB2 feedback dividers. In this state, internal switches disconnect and input connects directly to output, eliminating switching losses and achieving up to 99.9% efficiency with 18μA quiescent current.
Can the LT8210EUJ#TRPBF support reverse input protection down to –40V?
Yes, the LT8210EUJ#TRPBF supports reverse input protection to –40V when used with a single external N-channel MOSFET connected to the DG pin. The DG driver provides controlled gate turn-on/off during reverse events, enabling compliance with ISO 16750-2 and MIL-STD-1275 test pulses.
What is the purpose of the EXTVCC pin on the LT8210EUJ#TRPBF?
The EXTVCC pin on the LT8210EUJ#TRPBF accepts an external 7.3V–8.8V supply to power the GATEVCC regulator, improving overall efficiency at high input voltages. When EXTVCC exceeds its switchover threshold, the IC automatically transitions gate drive sourcing from VINP to EXTVCC-reducing power dissipation in the internal LDO.
Does the LT8210EUJ#TRPBF provide current monitoring on both input and output sides?
Yes, the LT8210EUJ#TRPBF provides bidirectional current monitoring: SNSP1/SNSN1 senses inductor current for cycle-by-cycle limiting, while SNSP2/SNSN2-with ±3% accuracy-enables precise average input or output current measurement via the IMON pin, supporting OCP, load sharing, and telemetry functions.
LT8210EUJ#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 40-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Type:
- Transistor Driver
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Number of Outputs:
- 2
- Output Phases:
- 1
- Voltage - Supply (Vcc/Vdd):
- 2.8V ~ 100V
- Frequency - Switching:
- 80kHz ~ 400kHz
- Duty Cycle (Max):
- -
- Synchronous Rectifier:
- Yes
- Clock Sync:
- Yes
- Serial Interfaces:
- -
- Control Features:
- Enable, Frequency Control, Power Good, Soft Start
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-QFN (6x6)
LT8210EUJ#TRPBF FAQ
1.How can I place an order for LT8210EUJ#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8210EUJ#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 LT8210EUJ#TRPBF reliable?
The price and inventory of LT8210EUJ#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8210EUJ#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8210EUJ#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8210EUJ#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8210EUJ#TRPBF?
LT8210EUJ#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8210EUJ#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 LT8210EUJ#TRPBF?
For technical support, including LT8210EUJ#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8210EUJ#TRPBF requirements.
6.How does Aetrix verify that LT8210EUJ#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8210EUJ#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 LT8210EUJ#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8210EUJ#TRPBF?
All LT8210EUJ#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8210EUJ#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 LT8210EUJ#TRPBF part is unused and in its original packaging.
Return procedure for LT8210EUJ#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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