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Analog Devices Inc. LTC4367HMS8#TRPBF
- Part No.:
- LTC4367HMS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Power Management - Specialized
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC4367HMS8#TRPBF.pdf
- Description:
- SUPPLY PROTECTION CONTROLLER
- Quantity:
- Payment:
- Shipping:
Inventory:1,381
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Product details
Overview
LTC4367HMS8#TRPBF from Analog Devices is a high-voltage overvoltage, undervoltage, and reverse supply protection controller for 2.5V–60V input systems. It controls back-to-back N-channel MOSFETs to block faults up to +100V and –40V, features adjustable UV/OV thresholds (±25mV hysteresis), 32ms fault recovery delay, and operates with only 70µA quiescent current. It is used in automotive load-dump-protected ECUs and industrial power inputs requiring robust hot-swap resilience.
For engineers reviewing the LTC4367HMS8#TRPBF datasheet, LTC4367HMS8#TRPBF pinout, LTC4367HMS8#TRPBF application, or LTC4367HMS8#TRPBF equivalent, key selection criteria include its –40V to 100V fault tolerance, MSOP-8 package compatibility, H-grade (–40°C to 125°C) operation, gate drive referenced to VOUT, and absence of required external TVS or input capacitor in most designs.
Technical Context
The LTC4367HMS8#TRPBF integrates dual precision comparators (UV/OV) with 0.5V reference and 25mV hysteresis, a charge pump-based gate driver delivering up to 13.1V enhancement above VOUT, and reverse-voltage detection that actively pulls GATE to VIN during negative transients. Its internal logic enforces a 32ms turn-on delay after fault clearance to suppress 50/60Hz AC and line noise.
It uses an internal LDO and UVLO (1.8V–2.4V) to enable operation down to 2.5V VIN while maintaining full protection across –40V to 100V. The FAULT open-drain output signals UV/OV violations, SHDN assertion, or startup under-voltage, with propagation delay <2µs and VOL <0.4V at 500µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Protection Range | –40V to +100V - withstands automotive load dump and reverse battery connection without damage |
| Operating Voltage | 2.5V to 60V - supports wide-input industrial and automotive supplies including 12V/24V nominal rails |
| UV/OV Threshold Accuracy | ±7.5mV at 500mV reference - enables precise 3.5V–18V or similar user-defined windows via resistive dividers |
| Quiescent Current | 70µA typical - minimizes standby power loss in always-on vehicle modules and remote sensors |
| GATE Drive Enhancement | Up to 13.1V above VOUT - ensures full enhancement of standard N-channel MOSFETs (e.g., Si7942) even at low VIN |
| Fault Recovery Delay | 32ms - debounces live connections and blocks 50Hz/60Hz AC power; prevents chatter on noisy inputs |
| Temperature Grade | H-grade (–40°C to +125°C) - qualified for under-hood automotive and high-temp industrial environments |
Pinout & Package
Package: 8-lead plastic MSOP (3mm × 3mm footprint, 1.1mm height). Exposed pad optional for thermal relief or grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | High-voltage input supply rail | Withstands –40V to 100V; powers internal circuitry when ≥2.5V; connects to external N-MOSFET source |
| UV | Undervoltage comparator input | Monitors VIN via resistive divider; triggers fault if voltage falls below user-set threshold (0.5V reference) |
| OV | Overvoltage comparator input | Monitors VIN via resistive divider; triggers fault if voltage exceeds user-set threshold (0.5V reference) |
| GND | Device ground reference | Common return for internal regulators, comparators, and FAULT output; ties to system ground plane |
| GATE | Gate drive output | Drives gates of back-to-back N-MOSFETs; voltage referenced to VOUT; includes fast/slow pull-down paths |
| VOUT | Output voltage sense | Senses load-side voltage; serves as charge pump reference and enables reverse-protection logic |
| FAULT | Open-drain fault indicator | Pulled low on UV/OV violation, SHDN assert, or VIN < UVLO; compatible with 5V/3.3V logic interfaces |
| SHDN | Shutdown control input | Active-low enable; places device in 5µA shutdown state and initiates controlled MOSFET turn-off |
Key Features
| Feature | Design Value |
|---|---|
| Reverse supply protection | Automatically connects GATE to negative VIN to disable back-to-back N-MOSFETs - no external diode or P-MOSFET needed |
| No input TVS or capacitor required | Integrated 100V fault tolerance eliminates need for external transient suppressors in most 12V/24V automotive applications |
| Adjustable UV/OV thresholds | Configurable using two external resistors per threshold; low 10nA pin leakage enables high-impedance dividers for low power |
| Controlled MOSFET turn-off | 90µA SHDN pull-down + feedback loop forces GATE to track VOUT during shutdown - limits dI/dt and reduces voltage spikes |
| Hot-swap capable input | VIN pin rated for rugged hot-plug events; reverse protection activates within microseconds of negative connection |
Applications
| Automotive ECU Power Input | Industrial PLC I/O Module |
|---|---|
Use Scenario: 12V/24V vehicle battery input exposed to load dump (+100V), jump-start reversal (–40V), and cranking undervoltage (≤6V). IC Role / Device Role / Timing Role: Fault protection controller enforcing safe power-good window before enabling downstream DC/DC converters and microcontrollers. Use Value: Eliminates need for discrete TVS, Schottky diodes, and high-voltage comparators - reduces BOM count and PCB area by >40%. |
Use Scenario: Field-powered analog I/O channel receiving unregulated 24V from factory wiring, subject to induced surges and polarity errors. IC Role / Device Role / Timing Role: Input supervisor isolating sensitive ADCs and isolators from faulty field wiring conditions. Use Value: Enables use of low-RDS(on) N-MOSFETs instead of lossy P-MOSFETs - cuts conduction loss by >60% vs. traditional reverse-polarity solutions. |
| Portable Test Equipment | Telecom Remote Radio Unit |
Use Scenario: Handheld multimeter or oscilloscope powered from interchangeable AC adapters and Li-ion packs, risking reverse polarity or overvoltage. IC Role / Device Role / Timing Role: Universal input protector ensuring safe operation regardless of power source type or orientation. Use Value: 70µA operating current extends battery life >200 hours in standby; 32ms debounce prevents false trips during plug insertion. |
Use Scenario: Outdoor RRH powered via PoE++ or DC feed, exposed to lightning-induced transients and accidental cable miswiring. IC Role / Device Role / Timing Role: First-line defense against –40V to +100V faults before power conditioning stage. Use Value: MSOP-8 package allows compact placement near input connector; H-grade rating ensures reliability at –40°C to +125°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar overvoltage/undervoltage/reverse protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC4367HDD#TRPBF | Same functionality and specs, but in 3mm × 3mm DFN package (exposed pad); θJA = 43°C/W vs. 160°C/W for MSOP | Better thermal performance in high-power or sealed enclosures; requires different PCB layout and reflow profile | Select for higher ambient temperature or higher continuous current where thermal dissipation is critical |
| LTC4367IMS8#TRPBF | Identical pinout and function, but I-grade (–40°C to +85°C); same 32ms recovery and 70µA IQ | Not qualified for under-hood automotive or extended industrial temperature zones requiring >85°C operation | Select only for cost-sensitive commercial or indoor industrial applications where 125°C operation is unnecessary |
Compared with LTC4367HMS8#TRPBF, the LTC4367HDD#TRPBF offers superior thermal resistance for high-current deployments, while the LTC4367IMS8#TRPBF sacrifices high-temperature capability to reduce cost - neither is pin-compatible replacement without verifying thermal and environmental requirements.
Availability
LTC4367HMS8#TRPBF is available at Aetrix Electronics and suitable for automotive ECU power inputs, industrial PLC I/O modules, and portable test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC4367HMS8#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 (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and power management ICs, serving automotive, industrial, communications, and aerospace markets.
The LTC4367 product line delivers integrated high-voltage protection controllers for harsh-input environments, designed specifically to replace discrete protection circuits in automotive and industrial power entry applications.
FAQ
What is the maximum negative voltage the LTC4367HMS8#TRPBF can withstand at VIN?
The LTC4367HMS8#TRPBF is rated for –40V at the VIN pin under absolute maximum conditions. Its reverse supply protection circuit actively detects negative VIN and pulls the GATE pin to VIN to disable back-to-back N-channel MOSFETs within microseconds. This prevents reverse current flow to VOUT and protects downstream circuitry without requiring external components.
Does the LTC4367HMS8#TRPBF require an external TVS diode for automotive load dump compliance?
No, the LTC4367HMS8#TRPBF does not require an external TVS diode for standard ISO 7637-2 Pulse 5a (load dump) testing up to +100V. Its internal architecture withstands –40V to +100V continuously at VIN, and its 32ms fault recovery delay filters the 100ms–400ms duration of typical load dump events. External TVS may still be used for enhanced margin in extreme cases.
How does the LTC4367HMS8#TRPBF handle hot-swap insertion of a negative supply?
When a negative supply is hot-swapped into VIN, the LTC4367HMS8#TRPBF's reverse-voltage monitor detects the condition and immediately connects the GATE pin to VIN via an internal switch. This forces both external N-channel MOSFETs into cutoff, blocking current flow to VOUT. The GATE waveform tracks VIN closely during the transient, as verified in Figure 8 of the datasheet.
Can the UV and OV thresholds of the LTC4367HMS8#TRPBF be set independently?
Yes, the LTC4367HMS8#TRPBF provides separate UV and OV pins, each connected to independent resistive dividers from VIN. Each input uses a precise 0.5V internal reference with 25mV hysteresis, allowing fully independent configuration - for example, UV = 7V and OV = 36V as shown in Typical Application TA01a. Leakage current <10nA enables high-resistance dividers to minimize power loss.
What is the purpose of the 32ms GATE turn-on delay in the LTC4367HMS8#TRPBF?
The 32ms GATE turn-on delay in the LTC4367HMS8#TRPBF ensures the input voltage remains within the user-defined UV/OV window for a minimum duration before enabling power to the load. This prevents chattering caused by noise, contact bounce, or 50/60Hz AC ripple. It also blocks live AC power sources - a key requirement in multi-source power systems where accidental AC connection must be rejected.
LTC4367HMS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Overvoltage, Undervoltage Protection
- Current - Supply:
- 70µA
- Voltage - Supply:
- 2.5V ~ 60V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
LTC4367HMS8#TRPBF FAQ
1.How can I place an order for LTC4367HMS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4367HMS8#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 LTC4367HMS8#TRPBF reliable?
The price and inventory of LTC4367HMS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC4367HMS8#TRPBF is usually 5 days.
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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4367HMS8#TRPBF transactions.
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4.How is shipping managed for LTC4367HMS8#TRPBF?
LTC4367HMS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4367HMS8#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 LTC4367HMS8#TRPBF?
For technical support, including LTC4367HMS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4367HMS8#TRPBF requirements.
6.How does Aetrix verify that LTC4367HMS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC4367HMS8#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 LTC4367HMS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC4367HMS8#TRPBF?
All LTC4367HMS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4367HMS8#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 LTC4367HMS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC4367HMS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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