My Inquiry
My Account
Analog Devices Inc. LT8210IUJ#TRPBF
- Part No.:
- LT8210IUJ#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
LT8210IUJ#TRPBF.pdf
- Description:
- 100V BUCK/BOOST CTLR WITH PASS-T
- Quantity:
- Payment:
- Shipping:
Inventory:1,516
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT8210IUJ#TRPBF from Analog Devices is a 100V input/output 4-switch synchronous buck-boost DC/DC controller with programmable 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 LT8210IUJ#TRPBF datasheet, LT8210IUJ#TRPBF pinout, LT8210IUJ#TRPBF application, or LT8210IUJ#TRPBF equivalent, key selection criteria include pass-thru window programming, dual-loop current monitoring (±3% accuracy), GATEVCC back-drive protection during brownout, EXTVCC switchover at 8V, and QFN-40 package thermal performance for 100V operation.
Technical Context
The LT8210IUJ#TRPBF implements independent buck and boost regulation loops with separate FB1 (boost) and FB2 (buck) inputs, enabling seamless transition between buck, boost, and pass-thru modes based on VIN/VOUT ratio. Its dual error amplifiers (VC1/VC2) support independent loop compensation for each region.
Pass-thru mode activates when VIN falls within a user-defined window centered on VOUT, bypassing switching entirely-eliminating switching losses and EMI while achieving 99.9% efficiency. The controller maintains regulation via analog comparators and precision current sense amplifiers (SNSP1/SNSN1 for inductor current, SNSP2/SNSN2 for average current).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.8V to 100V (4.5V min for startup); supports wide-input automotive and industrial rails. |
| VOUT Range | 1V to 100V; programmable via FB1/FB2 resistive dividers for flexible output configuration. |
| Output Accuracy | ±1.25% over –40°C to 125°C; ensures stable regulation across extreme temperature environments. |
| Current Monitoring | ±3% accuracy for average current (IMON), ±5% for current regulation; enables precise load management. |
| Switching Frequency | 80kHz to 400kHz (RT-set or synchronized); allows EMI optimization and inductor size trade-offs. |
| Pass-Thru IQ | 18µA at VINP = 48V; ultra-low quiescent current preserves battery life in always-on systems. |
| Reverse Protection | –40V tolerance with optional N-MOSFET; meets ISO 16750-2 pulse 5B and MIL-STD-1275E requirements. |
Pinout & Package
LT8210IUJ#TRPBF is housed in a 40-lead (6mm × 6mm) plastic QFN package with exposed pad (GND). Thermal resistance θJA = 25°C/W; requires soldered exposed pad for optimal thermal performance and noise immunity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN/UVLO (Pin 1) | Enable & UVLO Input | Enables IC above 1.45V; tolerates –40V; sets startup threshold via resistor divider from VIN. |
| MODE1/MODE2 (Pins 2,3) | Operating Mode Control | Selects CCM/DCM/Burst Mode/Pass-Thru; logic levels define functional state per Table 1 in datasheet. |
| FB1/FB2 (Pins 14,15) | Feedback Inputs | FB1 regulates boost loop (VOUT ≥ VIN), FB2 regulates buck loop (VOUT ≤ VIN); each has 1.00V nominal reference. |
| SNSP1/SNSN1 (Pins 21,22) | Inductor Current Sense | Differential input for cycle-by-cycle peak current limiting; ±20% accuracy; supports buck/boost/buck-boost regions. |
| SNSP2/SNSN2 (Pins 32,33) | Average Current Sense | Differential input for IMON output; enables precise average current regulation and monitoring. |
| GATEVCC (Pin 26) | Gate Driver Supply | Regulated 10.6V supply for N-channel MOSFET gates; back-drive protected to sustain regulation during input brownout. |
| EXTVCC (Pin 25) | External Driver Supply | Accepts 7.3V–8.8V input to power GATEVCC; improves efficiency by reducing dropout loss vs. VINP sourcing. |
| PWGD (Pin 2) | Power Good Output | Open-drain flag asserting when VOUT deviates >±10% or IMON >1.20V; supports system-level fault detection. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Pass-Thru Window | User-definable VIN range where input passes directly to output-eliminates switching losses and EMI while delivering 99.9% efficiency. |
| Dual Independent Regulation Loops | Separate FB1 (boost) and FB2 (buck) inputs with dedicated VC1/VC2 compensation pins enable stable control across all operating regions. |
| Reverse Input Protection to –40V | Integrated DG pin logic and gate drive allow implementation of robust reverse-polarity protection using one external N-MOSFET. |
| Back-Drive Protected GATEVCC | GATEVCC regulator sustains 10.6V output even when VIN drops below regulation threshold-ensuring gate drive integrity during brownout events. |
| Spread Spectrum Modulation | Reduces peak EMI by ±12.5% frequency dithering when SYNC/SPRD tied to VDD-no external components required. |
Applications
| Automotive Start-Stop Systems | Avionics Power Distribution |
|---|---|
Use Scenario: Maintaining stable 28V bus during engine cranking where battery voltage dips to 4V–6V and surges to 16V. IC Role / Device Role / Timing Role: 4-switch buck-boost controller regulating output across wide VIN transients while enabling pass-thru when VIN ≈ VOUT. Use Value: Eliminates need for separate LDOs or discrete protection circuits; achieves >95% efficiency across full crank profile. | Use Scenario: Converting 28V aircraft bus to 12V/5V rails for flight-critical avionics with DO-160 Section 22 surge immunity. IC Role / Device Role / Timing Role: High-reliability DC/DC controller supporting reverse polarity, transient suppression, and fail-safe power good signaling. Use Value: Meets MIL-STD-704F and DO-160G Section 22 requirements without external TVS or crowbar circuits. |
| Industrial Telecom Power | Emergency Call (eCall) Modules |
Use Scenario: Providing isolated 48V PoE++ auxiliary rail from unregulated 36V–75V telecom rectifier output. IC Role / Device Role / Timing Role: Synchronous buck-boost controller with programmable current limit and spread-spectrum EMI reduction. Use Value: Enables compact, low-noise design meeting EN 55032 Class B emissions without shielding or large filters. | Use Scenario: Powering GSM/LTE modem and GPS receiver in vehicle black box during collision when main battery fails. IC Role / Device Role / Timing Role: Primary power controller managing supercapacitor backup, reverse polarity protection, and low-IQ sleep mode. Use Value: 18µA pass-thru IQ extends backup runtime; –40V reverse tolerance prevents damage during jump-start attempts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC7813EUHE#TRPBF | 3.1V–100V VIN, dual-output, no pass-thru mode; requires external MOSFETs; 60ns minimum on-time. | Lacks non-switching pass-thru; higher IQ in light-load DCM; suited for dual-rail systems needing independent outputs. | Select when dual regulated outputs are required and pass-thru efficiency is not critical. |
| MAX20096ATPA/VY+ | 4.5V–60V VIN, integrated MOSFETs, 2.2MHz fixed frequency, no pass-thru; AEC-Q100 Grade 0. | Lower voltage rating; monolithic solution eliminates external FET layout complexity but limits max VOUT to 60V. | Select for space-constrained AEC-Q100 designs where 60V max output suffices and integration outweighs pass-thru benefit. |
Compared with LTC7813EUHE#TRPBF and MAX20096ATPA/VY+, LT8210IUJ#TRPBF uniquely delivers true pass-thru operation with <18µA IQ and 100V capability-critical for automotive cold-crank survival and ISO 7637 pulse immunity where switching must be eliminated during specific VIN windows.
Availability
LT8210IUJ#TRPBF is available at Aetrix Electronics and suitable for automotive start-stop systems, avionics power distribution, and industrial telecom power requiring stable component supply across extended temperature and high-voltage stress conditions.
Supply support for LT8210IUJ#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 industrial, automotive, communications, and healthcare markets.
The LT8210IUJ#TRPBF belongs to Analog Devices' Power by Linear™ controller family, designed specifically for high-voltage, high-reliability DC/DC conversion in harsh environments including automotive, aerospace, and industrial equipment.
FAQ
What is the maximum input voltage rating for the LT8210IUJ#TRPBF?
The LT8210IUJ#TRPBF supports an absolute maximum input voltage of 100V on VIN and VINP pins, with survival capability from –40V to 100V. Its operational input range is 2.8V to 100V after startup (4.5V minimum for initial enable), making it suitable for 48V and 60V industrial and automotive systems where transients exceed nominal rail voltages. This rating is confirmed in the Absolute Maximum Ratings table (Rev. B, p.3).
How does the pass-thru mode function in the LT8210IUJ#TRPBF?
The LT8210IUJ#TRPBF enters pass-thru mode when the input voltage falls within a user-programmed window centered on the output voltage-bypassing all switching activity to connect VIN directly to VOUT. This eliminates switching losses and EMI, achieving up to 99.9% efficiency. Mode selection is controlled via MODE1/MODE2 pins, and the window width is set by FB1/FB2 feedback resistors per the Pass-Thru Transfer Characteristic curve (Rev. B, p.1).
What package type and thermal characteristics does the LT8210IUJ#TRPBF use?
The LT8210IUJ#TRPBF uses a 40-lead (6mm × 6mm) plastic QFN package with exposed thermal pad (Pin 41 = GND). Its junction-to-ambient thermal resistance is θJA = 25°C/W when the exposed pad is properly soldered to PCB copper. This package supports high-power density designs in automotive and industrial applications where thermal management under 100V operation is critical.
Can the LT8210IUJ#TRPBF support reverse input protection, and how is it implemented?
Yes, the LT8210IUJ#TRPBF supports reverse input protection down to –40V using its DG pin and an external N-channel MOSFET. When VIN goes negative, the DG driver turns off the series MOSFET, blocking reverse current. The DG pin provides 8.5V gate drive (VDG – VIN) and features built-in pull-down (80mA typical) and undervoltage lockout (2.8V threshold), enabling robust protection without additional controllers or discretes.
What are the key differences between the LT8210IUJ#TRPBF and the LT8210EFE#TRPBF variants?
The LT8210IUJ#TRPBF and LT8210EFE#TRPBF share identical electrical specifications and functionality but differ in temperature grade and package: LT8210IUJ#TRPBF is rated for –40°C to 125°C in 40-lead QFN, while LT8210EFE#TRPBF is rated for –40°C to 125°C in 38-lead TSSOP. Both meet the same AEC-Q100 stress test requirements, but the QFN offers superior thermal performance (θJA = 25°C/W vs. 35°C/W for TSSOP), making LT8210IUJ#TRPBF preferred for high-power-density applications.
LT8210IUJ#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)
LT8210IUJ#TRPBF FAQ
1.How can I place an order for LT8210IUJ#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8210IUJ#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 LT8210IUJ#TRPBF reliable?
The price and inventory of LT8210IUJ#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8210IUJ#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8210IUJ#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8210IUJ#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8210IUJ#TRPBF?
LT8210IUJ#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8210IUJ#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 LT8210IUJ#TRPBF?
For technical support, including LT8210IUJ#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8210IUJ#TRPBF requirements.
6.How does Aetrix verify that LT8210IUJ#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8210IUJ#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 LT8210IUJ#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8210IUJ#TRPBF?
All LT8210IUJ#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8210IUJ#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 LT8210IUJ#TRPBF part is unused and in its original packaging.
Return procedure for LT8210IUJ#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT8210IUJ#TRPBF 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…
