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Analog Devices Inc. LTC4365HTS8-1#TRPBF
- Part No.:
- LTC4365HTS8-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Power Management - Specialized
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC4365HTS8-1#TRPBF.pdf
- Description:
- IC OVERVOLTAGE PROT TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:4,362
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Product details
Overview
LTC4365HTS8-1#TRPBF from Analog Devices is a high-temperature automotive-grade overvoltage, undervoltage and reverse supply protection controller for N-channel MOSFETs. It operates from 2.5V to 34V input, withstands –40V to 60V fault conditions, delivers 9.8V gate enhancement, consumes only 125µA quiescent current, and features 1ms fast recovery-enabling robust power path protection in 12V automotive surge and industrial hot-swap applications.
For engineers reviewing the LTC4365HTS8-1#TRPBF datasheet, LTC4365HTS8-1#TRPBF pinout, LTC4365HTS8-1#TRPBF application, or LTC4365HTS8-1#TRPBF equivalent, key selection criteria include its AEC-Q100 qualification, –40°C to 125°C operating range, TSOT-23 package footprint, adjustable UV/OV thresholds via external dividers, and fast 1ms recovery timing for transient resilience in automotive ECUs and battery-powered instrumentation.
Technical Context
The LTC4365HTS8-1#TRPBF implements dual precision comparators (0.5V threshold ±25mV hysteresis) for user-configurable UV and OV monitoring, with fault propagation delay under 2µs. Its internal charge pump drives external back-to-back N-channel MOSFETs with up to 9.8V gate-to-source enhancement referenced to VOUT, enabling low RDS(on) conduction while supporting reverse voltage blocking down to –40V.
Unlike standard controllers, it integrates gentle shutdown (90µA gate pull-down, GATE tracking VOUT decay), fast fault turn-off (50mA sink, <4µs gate discharge), and AC line rejection via 36ms debounce (reduced to 1ms in -1 variant). All functions operate across –40°C to 125°C without external TVS or input capacitors in most designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage Range | 2.5V to 34V - supports wide-input 12V/24V automotive and industrial rails without regulation |
| Fault Withstand Range | –40V to 60V - blocks reverse polarity, load dump, and ISO 7637-2 pulse 5a surges |
| UV/OV Threshold Accuracy | ±1.5% (500mV ±7.5mV) - enables precise 5V–18V window setting with 1% resistors |
| Recovery Delay | 1ms (LTC4365-1 variant) - eliminates chattering during fast transients like ignition noise |
| Quiescent Current | 125µA typical - minimizes standby drain in always-on vehicle modules |
| Shutdown Current | 10µA - enables ultra-low-power sleep mode for battery-backed systems |
| Package | 8-Lead TSOT-23 - 2.9mm × 1.6mm footprint compatible with space-constrained ECU PCBs |
| Temperature Grade | –40°C to 125°C (H-grade) - qualified per AEC-Q100 for under-hood automotive use |
Pinout & Package
Package: 8-Lead Plastic TSOT-23 (–40°C to 125°C), exposed pad optional for thermal relief.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GATE | N-channel MOSFET gate driver output | Charge-pump-enhanced drive referenced to VOUT; pulls down to <0.4V below VIN or VOUT during fault |
| VOUT | Output voltage sense reference | Sets GATE drive reference point; enables gate enhancement even when VOUT > VIN |
| FAULT | Open-drain fault status indicator | Pulled low on UV/OV fault, SHDN assertion, or VIN < UVLO (1.8V–2.4V) |
| SHDN | Active-high enable control | High (>0.75V) enables gate drive; low (<0.4V) forces 10µA shutdown and 90µA gentle turn-off |
| VIN | Main power input terminal | Handles –40V to 60V fault voltages; supplies internal LDOs and comparators |
| UV | Undervoltage comparator input | 0.5V falling threshold with 25mV hysteresis; connects to resistor divider for custom UV trip |
| OV | Overvoltage comparator input | 0.5V rising threshold with 25mV hysteresis; connects to resistor divider for custom OV trip |
| GND | Device ground reference | Common return for all analog and digital circuitry; exposed pad may be connected here |
Key Features
| Feature | Design Value |
|---|---|
| Fast 1ms recovery | Enables rapid reconnection after brief transients (e.g., cranking dips), unlike 36ms standard version |
| AEC-Q100 qualified | Validated for automotive under-hood operation including temperature cycling, HTOL, and ESD |
| No external TVS required | Integrated 60V fault tolerance eliminates need for discrete TVS diodes in most 12V/24V systems |
| Reverse supply blocking | Automatic gate connection to negative VIN isolates load from –40V reverse polarity events |
| Gentle shutdown | 90µA controlled gate discharge prevents VOUT collapse spikes and reduces EMI in sensitive loads |
| Adjustable UV/OV window | External resistor dividers allow precise tuning of protection thresholds for diverse system requirements |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC I/O Power Rail |
|---|---|
Use Scenario: Protecting microcontroller power rail from load dump (ISO 7637-2 Pulse 5a) and reverse battery connection in BCM units. IC Role / Device Role / Timing Role: Input voltage fault protection controller that gates external N-MOSFETs to isolate downstream logic during faults. Use Value: Eliminates need for bulky TVS + series diode solutions; maintains 125µA quiescent draw during sleep mode to extend battery life. | Use Scenario: Securing 24V fieldbus power input against wiring errors and induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: High-voltage supervisor controlling dual N-channel MOSFETs to enforce strict 18V–32V operating window. Use Value: 1ms recovery ensures uninterrupted communication during short-duration brownouts common in motor-driven environments. |
| Portable Medical Instrumentation | EV Onboard Charger Auxiliary Supply |
Use Scenario: Safeguarding lithium-ion battery backup path from overcharge and reverse polarity during AC adapter hot-swap. IC Role / Device Role / Timing Role: Dual-threshold protector managing back-to-back N-MOSFETs to block invalid input sources while maintaining low-loss conduction. Use Value: 9.8V gate drive enables use of low-RDS(on) MOSFETs, reducing heat rise and improving efficiency in compact enclosures. | Use Scenario: Conditioning 12V auxiliary supply derived from HV DC-DC converter, subject to switching noise and transient coupling. IC Role / Device Role / Timing Role: Precision window monitor rejecting 50Hz/60Hz ripple and fast transients via 1ms debounce and comparator hysteresis. Use Value: AEC-Q100 H-grade rating ensures reliability in high-temperature EV powertrain environments where ambient exceeds 105°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar overvoltage/undervoltage protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC4365ITS8-1#TRPBF | Same functionality but rated for –40°C to 85°C; lacks AEC-Q100 qualification | Suitable for commercial/industrial equipment not requiring automotive reliability testing | Select when cost sensitivity outweighs under-hood temperature or automotive qualification needs |
| TPS26631RGER | Integrated 60V MOSFET; fixed 5.5V–36V UV/OV thresholds; no adjustable window | Plug-and-play solution for simpler systems where programmability is unnecessary | Choose when board space is critical and protection thresholds align with fixed internal settings |
Compared with LTC4365ITS8-1#TRPBF, the LTC4365HTS8-1#TRPBF adds AEC-Q100 compliance and extended 125°C operation for automotive use; versus TPS26631RGER, it trades integrated FET simplicity for design flexibility via external MOSFET selection and fully adjustable UV/OV thresholds.
Availability
LTC4365HTS8-1#TRPBF is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O power rails, portable medical instrumentation, and EV onboard charger auxiliary supplies requiring stable component supply across extended temperature ranges.
Supply support for LTC4365HTS8-1#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 automotive, industrial, communications, and healthcare markets.
The LTC4365 product line delivers precision input protection controllers for harsh environments, designed specifically to replace discrete diode/MOSFET/TVS solutions with single-chip robustness in automotive and industrial power management.
FAQ
What is the maximum fault voltage the LTC4365HTS8-1#TRPBF can withstand?
The LTC4365HTS8-1#TRPBF withstands –40V to 60V on the VIN pin, covering automotive load dump (ISO 7637-2 Pulse 5a), reverse battery connection, and industrial surge events. This rating applies across its full –40°C to 125°C operating range and does not require external TVS diodes in most implementations.
How does the LTC4365HTS8-1#TRPBF differ from the standard LTC4365HTS8#TRPBF?
The LTC4365HTS8-1#TRPBF features a 1ms recovery delay after UV/OV faults, whereas the standard LTC4365HTS8#TRPBF uses a 36ms delay. This faster response prevents power interruption during brief transients like engine cranking dips, making the -1 variant preferred for real-time automotive subsystems.
Can the LTC4365HTS8-1#TRPBF protect against reverse polarity without external components?
Yes-the LTC4365HTS8-1#TRPBF provides automatic reverse supply protection by internally connecting the GATE pin to negative VIN, turning off external back-to-back N-channel MOSFETs. No additional diodes, P-MOSFETs, or comparators are needed to block –40V reverse inputs.
What package type and footprint does the LTC4365HTS8-1#TRPBF use?
The LTC4365HTS8-1#TRPBF uses an 8-Lead Plastic TSOT-23 package (2.9mm × 1.6mm), identical to industry-standard SOT-23-8 footprints. The exposed pad is optional for thermal relief and may be left unconnected or tied to GND based on thermal requirements.
Is the LTC4365HTS8-1#TRPBF qualified for automotive applications?
Yes-the LTC4365HTS8-1#TRPBF is AEC-Q100 qualified (Grade H, –40°C to 125°C) and manufactured under controlled automotive processes. It meets reliability requirements for under-hood and powertrain applications, including HTOL, temperature cycling, and ESD testing per AEC standards.
LTC4365HTS8-1#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Overvoltage, Undervoltage Protection
- Current - Supply:
- 125µA
- Voltage - Supply:
- 2.5V ~ 34V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
LTC4365HTS8-1#TRPBF FAQ
1.How can I place an order for LTC4365HTS8-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4365HTS8-1#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 LTC4365HTS8-1#TRPBF reliable?
The price and inventory of LTC4365HTS8-1#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC4365HTS8-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC4365HTS8-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4365HTS8-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4365HTS8-1#TRPBF?
LTC4365HTS8-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4365HTS8-1#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 LTC4365HTS8-1#TRPBF?
For technical support, including LTC4365HTS8-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4365HTS8-1#TRPBF requirements.
6.How does Aetrix verify that LTC4365HTS8-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC4365HTS8-1#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 LTC4365HTS8-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC4365HTS8-1#TRPBF?
All LTC4365HTS8-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4365HTS8-1#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 LTC4365HTS8-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC4365HTS8-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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