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Analog Devices Inc. LTC4365ITS8-1#TRMPBF
- Part No.:
- LTC4365ITS8-1#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Power Management - Specialized
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC4365ITS8-1#TRMPBF.pdf
- Description:
- IC OVERVOLTAGE PROT TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,700
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Product details
Overview
LTC4365ITS8-1#TRMPBF from Analog Devices is an automotive-grade N-channel MOSFET controller for overvoltage, undervoltage, and reverse supply protection. It operates from 2.5V to 34V input, withstands –40V to 60V fault conditions, features 1ms fast recovery, 125µA operating current, and supports external dual N-channel MOSFETs in TSOT-23 packaging for 12V automotive surge protection.
For engineers reviewing the LTC4365ITS8-1#TRMPBF datasheet, LTC4365ITS8-1#TRMPBF pinout, LTC4365ITS8-1#TRMPBF application, or LTC4365ITS8-1#TRMPBF equivalent, key selection criteria include its –40°C to 85°C temperature range, 1ms recovery delay, adjustable UV/OV thresholds via resistive dividers, and AEC-Q100 qualification for automotive power rail protection.
Technical Context
The LTC4365ITS8-1#TRMPBF integrates two precision comparators (0.5V threshold, 25mV hysteresis) for user-configurable UV and OV monitoring, a charge pump delivering up to 9.8V gate enhancement referenced to VOUT, and dual-mode gate control: fast 50mA pull-down for fault response and gentle 90µA shutdown with VOUT-tracking behavior.
Its reverse protection circuitry actively connects GATE to negative VIN to force back-to-back N-MOSFETs into blocking state, while the 1ms recovery timer (vs. 36ms in standard LTC4365) enables rapid reconnection after transient faults-critical for automotive subsystems requiring minimal power interruption.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage Range | 2.5V to 34V - powers from low-voltage battery systems up to nominal 24V industrial rails without external regulation. |
| Fault Withstand Range | –40V to 60V - survives reverse battery connection, load dump spikes, and AC line transients in automotive environments. |
| Recovery Delay Time | 1ms (LTC4365-1 variant) - enables sub-millisecond re-engagement after overvoltage/undervoltage faults, reducing system downtime. |
| Quiescent Current | 125µA typical - minimizes standby power loss in always-on vehicle modules like telematics or ADAS sensors. |
| Shutdown Current | 10µA - supports ultra-low-power sleep modes during vehicle ignition-off states. |
| UV/OV Threshold Accuracy | ±1.5% (500mV ±7.5mV) - ensures precise windowing of input supply, critical for protecting sensitive 3.3V or 5V logic domains. |
| Package | 8-Lead TSOT-23 - compact footprint compatible with high-density PCB layouts in space-constrained automotive ECUs. |
Pinout & Package
8-Lead Plastic TSOT-23 package with exposed pad (GND-connected), rated for –40°C to 85°C ambient operation and qualified per AEC-Q100 Grade 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GATE | N-Channel MOSFET Gate Driver Output | Charge-pump-enhanced output referenced to VOUT; delivers up to 9.8V above VOUT to fully enhance external N-MOSFETs. |
| VOUT | Output Voltage Sense Reference | Senses voltage at load side of external MOSFETs; serves as reference for GATE drive and reverse protection logic. |
| FAULT | Open-Drain Fault Status Output | Pulled low during UV/OV fault, SHDN assertion, or VIN < UVLO; drives microcontroller interrupt or LED indicator. |
| SHDN | Active-Low Shutdown Control Input | Enables/disables gate drive and enters 10µA shutdown mode; threshold is 0.4V to 1.2V. |
| VIN | Input Supply Terminal | Accepts protected input from 2.5V–34V; withstands –40V to 60V fault voltages without damage. |
| UV | Undervoltage Comparator Input | Monitors VIN via external resistor divider; triggers fault when voltage falls below 0.5V threshold (hysteresis = 25mV). |
| OV | Overvoltage Comparator Input | Monitors VIN via external resistor divider; triggers fault when voltage exceeds 0.5V threshold (hysteresis = 25mV). |
| GND | Device Ground Reference | Primary ground return; exposed pad must be connected to PCB ground plane for thermal and electrical integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Fast 1ms Recovery | Reduces power interruption time after transient overvoltage/undervoltage events-essential for CAN/LIN bus nodes requiring uninterrupted communication. |
| AEC-Q100 Qualified | Validated for automotive use across –40°C to 85°C ambient, supporting under-hood and cabin ECU deployments. |
| No External TVS Required | Integrated fault tolerance eliminates need for discrete transient voltage suppressors in most 12V automotive applications, reducing BOM count and board area. |
| Reverse VIN Protection | Automatically isolates load from –40V inputs by connecting GATE to negative VIN, enabling robust hot-swap capability without external diodes. |
| Adjustable UV/OV Thresholds | Configurable via external resistive dividers-supports custom voltage windows (e.g., 9V–16V for 12V battery systems) without changing IC. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Node Power Management |
|---|---|
Use Scenario: Protecting infotainment head unit power input against load dump (up to +60V) and reverse battery connection in 12V vehicle architectures. IC Role / Device Role / Timing Role: Primary input fault controller that gates power delivery using external N-MOSFETs and asserts FAULT signal to host MCU upon violation. Use Value: Prevents catastrophic failure of downstream DC-DC converters and SoCs during ISO 7637-2 pulse 5a/b events, eliminating need for bulky TVS arrays. | Use Scenario: Securing remote I/O module powered from unregulated 24V field wiring subject to surges and polarity reversal. IC Role / Device Role / Timing Role: Front-end protector ensuring only valid 18V–30V input reaches isolated power supplies and analog front ends. Use Value: Enables single-supply design with no external reverse-blocking diode or overvoltage clamp, reducing insertion loss and thermal stress. |
| Laptop Adapter Input Conditioning | Portable Medical Instrument Power Sequencing |
Use Scenario: Validating third-party AC adapters before enabling charging circuitry in ultrabooks with dual-input (battery + adapter) architecture. IC Role / Device Role / Timing Role: Window comparator enforcing safe adapter voltage range (e.g., 15V–20V) and disabling path if out-of-spec or reversed. Use Value: Avoids lithium battery overcharge or FET gate oxide damage from counterfeit adapters delivering >24V or inverted polarity. | Use Scenario: Enabling regulated power to patient-connected analog signal chains only when main supply meets strict 4.75V–5.25V window. IC Role / Device Role / Timing Role: Precision UV/OV monitor with 1ms recovery ensuring immediate reactivation after brief brownouts common in mobile cart power systems. Use Value: Maintains clinical data continuity during short grid interruptions without triggering full system reset or calibration loss. |
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#TRMPBF | 36ms recovery delay vs. 1ms; identical pinout, package, and temperature grade. | Suitable for non-time-critical protection where slower reconnection is acceptable (e.g., battery backup systems). | Select LTC4365ITS8#TRMPBF only if 36ms fault recovery is sufficient and cost sensitivity favors standard variant. |
| TPS26631RGER | Integrated 60V MOSFET, fixed 5.5V–36V operating range, no adjustable UV/OV thresholds, 2.5ms recovery. | Targeted at simpler plug-and-play applications without custom voltage windowing needs. | Choose TPS26631RGER when board space is extremely constrained and fixed protection limits are acceptable. |
Compared with LTC4365ITS8#TRMPBF, the LTC4365ITS8-1#TRMPBF provides 36× faster fault recovery-critical for real-time automotive networks-while retaining full configurability and AEC-Q100 compliance; versus TPS26631RGER, it offers precise user-defined voltage windows and external MOSFET flexibility at the cost of one additional component.
Availability
LTC4365ITS8-1#TRMPBF is available at Aetrix Electronics and suitable for automotive ECU power management, industrial sensor node protection, and portable medical device input conditioning requiring stable component supply and AEC-Q100-compliant sourcing.
Supply support for LTC4365ITS8-1#TRMPBF 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 with precision power and protection solutions.
The LTC4365 product line delivers robust, configurable input protection controllers for harsh environments-designed specifically to replace discrete protection circuits in automotive and industrial power systems with integrated, AEC-Q100-qualified ICs.
FAQ
What is the recovery delay time of the LTC4365ITS8-1#TRMPBF, and how does it differ from the standard LTC4365?
The LTC4365ITS8-1#TRMPBF has a 1ms recovery delay after UV/OV fault clearance, enabling rapid reconnection of power to the load. This is a key differentiator from the standard LTC4365 (e.g., LTC4365ITS8#TRMPBF), which uses a 36ms recovery timer to filter noise. The -1 suffix explicitly denotes this fast-recovery variant, and both share identical pinout, package, and temperature rating (–40°C to 85°C).
Does the LTC4365ITS8-1#TRMPBF require external components for basic overvoltage and undervoltage protection?
Yes-the LTC4365ITS8-1#TRMPBF requires external resistive dividers on UV and OV pins to set custom voltage thresholds, plus external dual N-channel MOSFETs for power path control. However, it eliminates the need for external TVS diodes or input capacitors in most 12V automotive applications due to its –40V to 60V fault tolerance and internal charge pump.
Is the LTC4365ITS8-1#TRMPBF qualified for automotive applications?
Yes, the LTC4365ITS8-1#TRMPBF is AEC-Q100 qualified (Grade 3, –40°C to 85°C) and explicitly designated for automotive use. Its datasheet confirms automotive reliability testing, and the "I" temperature grade and "TS8" package meet stringent under-hood and cabin deployment requirements.
How does reverse supply protection work in the LTC4365ITS8-1#TRMPBF?
When VIN goes negative, the LTC4365ITS8-1#TRMPBF activates an internal switch connecting the GATE pin directly to VIN. This forces the gate-source voltage of the downstream N-MOSFET to zero or negative, turning it off and blocking reverse current. The feature works autonomously without external components and supports –40V reverse input.
What is the function of the FAULT pin on the LTC4365ITS8-1#TRMPBF?
FAULT is an open-drain output that pulls low during any fault condition: UV violation, OV violation, SHDN assertion, or VIN below UVLO (1.8V–2.4V). It provides a hardware-level status signal for microcontrollers to trigger diagnostics, disable downstream regulators, or illuminate warning indicators-enabling fail-safe system responses in safety-critical designs.
LTC4365ITS8-1#TRMPBF 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 ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
LTC4365ITS8-1#TRMPBF FAQ
1.How can I place an order for LTC4365ITS8-1#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4365ITS8-1#TRMPBF 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 LTC4365ITS8-1#TRMPBF reliable?
The price and inventory of LTC4365ITS8-1#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC4365ITS8-1#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC4365ITS8-1#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4365ITS8-1#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4365ITS8-1#TRMPBF?
LTC4365ITS8-1#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4365ITS8-1#TRMPBF 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 LTC4365ITS8-1#TRMPBF?
For technical support, including LTC4365ITS8-1#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4365ITS8-1#TRMPBF requirements.
6.How does Aetrix verify that LTC4365ITS8-1#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC4365ITS8-1#TRMPBF 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 LTC4365ITS8-1#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC4365ITS8-1#TRMPBF?
All LTC4365ITS8-1#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4365ITS8-1#TRMPBF, 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 LTC4365ITS8-1#TRMPBF part is unused and in its original packaging.
Return procedure for LTC4365ITS8-1#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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