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Analog Devices Inc. LT8210IFE#TRPBF
- Part No.:
- LT8210IFE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 38-TFSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
LT8210IFE#TRPBF.pdf
- Description:
- 100V BUCK/BOOST CTLR WITH PASS-T
- Quantity:
- Payment:
- Shipping:
Inventory:3,994
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Product details
Overview
LT8210IFE#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 LT8210IFE#TRPBF datasheet, LT8210IFE#TRPBF pinout, LT8210IFE#TRPBF application, or LT8210IFE#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 38-lead TSSOP package thermal performance under 100V transients.
Technical Context
The LT8210IFE#TRPBF implements dual-loop control: FB1 regulates output voltage in buck, boost, and buck-boost regions using a precision 1.00V reference; FB2 sets the buck-side regulation point during pass-thru operation with a separate 1.00V reference. Its pass-thru transfer characteristic activates when VINP is within a user-defined window relative to VOUT, bypassing switching entirely.
Control logic uses MODE1/MODE2 pins to select among CCM, DCM, Burst Mode®, and pass-thru modes. The GATEVCC regulator maintains 10.6V gate drive from either VINP or EXTVCC (switchover at 8V), with backdrive protection enabling stable operation during input brownouts. Cycle-by-cycle inductor current limiting operates with ±20% tolerance across all operating regions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.8V to 100V after startup; 4.5V minimum for start-up - supports wide-input automotive and industrial rails. |
| VOUT Range | 1V to 100V - enables flexible output configuration without external level-shifting. |
| Pass-Thru IQ | 18µA at VINP = 48V - delivers ultra-low quiescent current during non-switching operation. |
| Output Accuracy | ±1.25% over –40°C to 125°C - ensures stable regulation across automotive temperature extremes. |
| Current Monitoring | ±3% accuracy for average current sensing - enables precise input/output current limiting and telemetry. |
| Switching Frequency | 80kHz to 400kHz, RT-set or synchronized - allows EMI optimization and layout flexibility. |
| Reverse Protection | –40V input survivability with optional N-MOSFET - meets ISO 16750-2 pulse 5a requirements. |
Pinout & Package
The LT8210IFE#TRPBF is packaged in a 38-lead plastic TSSOP (FE package) with exposed pad (Pin 39) soldered to PCB ground for thermal and electrical integrity. Absolute maximum ratings include –40V to 100V on VIN/EN/UVLO and –0.3V to 100V on SNSP2/SNSN2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN/UVLO (Pin 1) | Enable & UVLO input | Enables IC above 1.45V; tolerates –40V - supports direct connection to battery with undervoltage lockout. |
| MODE1/MODE2 (Pins 2–3) | Operating mode select | Configures CCM/DCM/Burst Mode®/pass-thru via logic levels - enables dynamic efficiency optimization. |
| PWGD (Pin 5) | Open-drain power-good | Asserts low if VOUT deviates >±10% or IMON >1.20V - provides system-level fault signaling up to 40V. |
| FB1/FB2 (Pins 14–15) | Voltage feedback inputs | FB1: 1.00V reference for buck/boost regulation; FB2: 1.00V reference for pass-thru buck loop - enables independent loop tuning. |
| IMON (Pin 10) | Current monitor output | Sources current proportional to (SNSP2–SNSN2); transitions to current regulation at 1.01V - implements accurate average current limiting. |
| SNSP1/SNSN1 (Pins 22–23) | Inductor current sense | Differential input for cycle-by-cycle peak current limiting - supports ±20% tolerance with 45–96mV threshold range. |
| GATEVCC (Pin 27) | Gate driver supply | Regulated 10.6V output; powered from VINP or EXTVCC - drives standard-level N-channel MOSFETs reliably. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Pass-Thru Window | User-definable VINP range where input passes directly to output - eliminates switching losses and EMI while achieving 99.9% efficiency. |
| Backdrive-Protected GATEVCC | Maintains 10.6V regulation during VINP brownout - sustains gate drive without external hold-up capacitance. |
| Reverse Input Protection Support | Enables –40V survivability using single external N-MOSFET - satisfies ISO 16750-2 and MIL-1275 compliance requirements. |
| Spread Spectrum Modulation | Reduces peak EMI by modulating switching frequency up to ±12.5% - simplifies EMC filter design in noise-sensitive applications. |
| Power-Good with Overcurrent Monitor | Combines VOUT regulation error and IMON overcurrent detection into single open-drain output - reduces system monitoring complexity. |
Applications
| Automotive Start-Stop Systems | Avionics Power Distribution |
|---|---|
Use Scenario: Maintaining stable 24V/28V bus during engine cranking with battery voltage sagging to 4V. IC Role / Device Role / Timing Role: Buck-boost controller with pass-thru mode activated at nominal battery voltage and seamless transition to boost during cranking. Use Value: Eliminates dropout during cold-crank events; achieves <18µA quiescent current in pass-thru to extend battery life in parked state. | Use Scenario: Regulating 28V aircraft bus to 12V/15V for flight control electronics with MIL-STD-704 and DO-160 compliance. IC Role / Device Role / Timing Role: High-reliability DC/DC controller supporting reverse polarity transients up to –40V and surge immunity per DO-160 Section 22. Use Value: Enables single-stage conversion from unregulated 18–32V avionics bus with integrated reverse protection and ±1.25% output stability over temperature. |
| Industrial Telecom Power | Emergency Call (eCall) Modules |
Use Scenario: Converting 48V PoE++ or telecom rectified input to isolated 12V/5V rails in base station equipment. IC Role / Device Role / Timing Role: Primary controller managing wide-input buck-boost conversion with programmable frequency synchronization to avoid interference with RF subsystems. Use Value: Supports 80–400kHz sync capability and spread-spectrum modulation to meet EN 55032 Class B conducted/radiated emissions limits. | Use Scenario: Providing backup power to GSM/LTE module during vehicle collision when main battery disconnects. IC Role / Device Role / Timing Role: Dual-role controller: regulates supercapacitor charging from battery and discharges it to maintain 12V output during crash-induced power loss. Use Value: Leverages pass-thru mode for efficient charging and fast buck-boost response (<10µs PWGD glitch delay) to sustain critical comms link. |
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#PBF | Fixed 300kHz frequency; no pass-thru mode; max VIN = 40V; requires external bootstrap diodes. | Lacks non-switching pass-thru efficiency benefit; unsuitable for >40V input or ISO 7637 pulse testing. | Select only if fixed-frequency operation and lower input voltage (<40V) are acceptable trade-offs for reduced BOM count. |
| MPQ4332GSD-AEC1-Z | Integrated MOSFETs; max VIN = 36V; no reverse input protection; no EXTVCC option; AEC-Q100 Grade 1. | Not rated for –40V reverse transients; limited to 36V input - fails ISO 16750-2 pulse 5a and MIL-1275 testing. | Choose only for cost-sensitive automotive infotainment where input stays within 5–36V and reverse protection is handled externally. |
Compared with LTC3789EFE#PBF and MPQ4332GSD-AEC1-Z, the LT8210IFE#TRPBF uniquely delivers 100V operation, programmable pass-thru, and –40V reverse survivability - making it the sole option for ISO 7637-compliant start-stop and avionics power systems requiring zero-switching-loss operation at nominal input.
Availability
LT8210IFE#TRPBF is available at Aetrix Electronics and suitable for automotive start-stop systems, avionics power distribution, industrial telecom infrastructure, and emergency call (eCall) modules requiring stable component supply across extended temperature and transient-voltage conditions.
Supply support for LT8210IFE#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 industrial, automotive, communications, and aerospace markets.
The LT8210IFE#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, avionics, and industrial applications with stringent transient and reverse-polarity requirements.
FAQ
What is the maximum input voltage rating for the LT8210IFE#TRPBF?
The LT8210IFE#TRPBF has an absolute maximum input voltage rating of 100V on the VIN and VINP pins, with guaranteed operation from 2.8V to 100V after startup (4.5V minimum for initial start-up). This 100V rating enables direct integration into 48V and 60V industrial and commercial systems without input pre-regulation. The LT8210IFE#TRPBF also survives –40V reverse input transients when configured with optional reverse protection circuitry.
How does the pass-thru mode function in the LT8210IFE#TRPBF?
The LT8210IFE#TRPBF enters pass-thru mode when the input voltage (VINP) falls within a user-programmable window relative to the output voltage - typically set via FB1 and FB2 resistive dividers. In this mode, the internal switches are disabled and input connects directly to output, eliminating switching losses and EMI while achieving up to 99.9% efficiency. The LT8210IFE#TRPBF automatically transitions to buck or boost regulation if VINP moves outside the window.
What package type is used for the LT8210IFE#TRPBF?
The LT8210IFE#TRPBF is supplied in a 38-lead plastic TSSOP package (FE package) with exposed thermal pad (Pin 39) that must be soldered to PCB ground. This package supports high-power dissipation under 100V transients and provides validated thermal performance for automotive and industrial applications operating from –40°C to 125°C junction temperature.
Does the LT8210IFE#TRPBF support external frequency synchronization?
Yes, the LT8210IFE#TRPBF supports external clock synchronization via the SYNC/SPRD pin (Pin 4), accepting input frequencies from 80kHz to 400kHz. When driven by an external clock, its internal PLL locks to the signal, enabling deterministic timing and EMI reduction through frequency alignment. Alternatively, connecting SYNC/SPRD to VDD enables spread-spectrum modulation of the RT-set frequency.
What is the purpose of the IMON pin on the LT8210IFE#TRPBF?
The IMON pin (Pin 10) on the LT8210IFE#TRPBF outputs a current proportional to the differential voltage across SNSP2 and SNSN2, enabling accurate average current monitoring and regulation. When the IMON voltage exceeds 1.01V, the controller transitions from voltage-mode to current-mode regulation. The LT8210IFE#TRPBF achieves ±3% current measurement accuracy, supporting precise input/output current limiting and telemetry functions.
LT8210IFE#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 38-TFSOP (0.173", 4.40mm Width) 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:
- 38-TSSOP-EP
LT8210IFE#TRPBF FAQ
1.How can I place an order for LT8210IFE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8210IFE#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 LT8210IFE#TRPBF reliable?
The price and inventory of LT8210IFE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8210IFE#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8210IFE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8210IFE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8210IFE#TRPBF?
LT8210IFE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8210IFE#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 LT8210IFE#TRPBF?
For technical support, including LT8210IFE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8210IFE#TRPBF requirements.
6.How does Aetrix verify that LT8210IFE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8210IFE#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 LT8210IFE#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8210IFE#TRPBF?
All LT8210IFE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8210IFE#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 LT8210IFE#TRPBF part is unused and in its original packaging.
Return procedure for LT8210IFE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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