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Analog Devices Inc. LTC4367IMS8#TRPBF
- Part No.:
- LTC4367IMS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Power Management - Specialized
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC4367IMS8#TRPBF.pdf
- Description:
- SUPPLY PROTECTION CONTROLLER
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
LTC4367IMS8#TRPBF from Analog Devices is a high-reliability 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, provides 32ms fault recovery delay, consumes only 70µA operating current, and operates across –40°C to +85°C - deployed in automotive load-dump protection and industrial power rails.
For engineers reviewing the LTC4367IMS8#TRPBF datasheet, LTC4367IMS8#TRPBF pinout, LTC4367IMS8#TRPBF application, or LTC4367IMS8#TRPBF equivalent, key selection criteria include its ±40V/100V fault tolerance, adjustable UV/OV thresholds via resistive dividers, gate drive referenced to VOUT, MSOP-8 package compatibility, and absence of required TVS or input capacitor in most designs.
Technical Context
The LTC4367IMS8#TRPBF integrates dual precision comparators (0.5V threshold, 25mV hysteresis) for user-configurable UV and OV monitoring, 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 line noise and prevent chattering.
It features a high-voltage tolerant FAULT open-drain output (0.15V low at 500µA), shutdown control with 5µA quiescent current, and leakage-limited UV/OV inputs (<10nA at 100°C) enabling high-impedance resistor networks. The device supports hot-swap operation and isolates loads from AC mains (50/60Hz) by blocking live connections.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Protection Range | –40V to +100V - withstands automotive load dump and reverse battery connection without external clamping. |
| Operating Voltage | 2.5V to 60V - powers from low-voltage battery rails up to industrial 48V systems. |
| UV/OV Threshold Accuracy | ±1.5% (500mV nominal) - enables precise window setting with minimal resistor tolerance impact. |
| GATE Drive Enhancement | Up to 13.1V above VOUT - ensures full enhancement of standard N-channel MOSFETs even at low VIN. |
| Quiescent Current | 70µA typical - minimizes standby power loss in always-on systems like telematics or remote sensors. |
| Shutdown Current | 5µA - supports ultra-low-power sleep modes in battery-backed instrumentation. |
| Turn-On Delay | 32ms - debounces noisy inputs and blocks 50Hz/60Hz AC power during live insertion. |
Pinout & Package
Package: 8-Lead Plastic MSOP (MS8), 3.0mm × 3.0mm footprint, exposed pad optional for thermal relief. Pin count and layout match industry-standard MSOP-8 footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | High-voltage input supply rail | Withstands –40V to 100V; powers internal circuitry and serves as reference for reverse protection logic. |
| UV | Undervoltage comparator input | 0.5V falling threshold; connects to resistive divider to set minimum safe input voltage (e.g., 3.5V). |
| OV | Overvoltage comparator input | 0.5V rising threshold; sets maximum allowable input (e.g., 18V); clamp required if >5V present. |
| GND | Device ground reference | Common return for all internal circuits; exposed pad may be connected here for improved thermal performance. |
| GATE | Gate drive output | Charge-pump output referenced to VOUT; drives external N-MOSFET gates with up to 13.1V enhancement. |
| VOUT | Output voltage sense | Senses post-MOSFET voltage; used as charge pump reference and fault detection baseline. |
| FAULT | Fault status indicator | Open-drain output pulled low on UV/OV fault, SHDN assertion, or VIN < UVLO (1.8V). |
| SHDN | Shutdown enable input | Active-low control; disables gate drive and reduces current to 5µA; 0.75V threshold with ±15nA leakage. |
Key Features
| Feature | Design Value |
|---|---|
| No external TVS or input capacitor required | Integrated 100V fault tolerance eliminates need for costly transient suppressors in most 24V/48V applications. |
| Adjustable UV/OV thresholds | Configured via two external resistors per threshold - supports custom voltage windows without changing IC. |
| Reverse supply protection | Automatically connects GATE to negative VIN to disable back-to-back N-MOSFETs - no body diode conduction path to load. |
| Low-power operation | 70µA operating / 5µA shutdown current enables use in energy-constrained edge nodes and portable equipment. |
| AC line blocking | 32ms turn-on delay inherently rejects 50Hz/60Hz AC power - prevents accidental energization from wall adapters. |
Applications
| Automotive Load Dump Protection | Industrial Power Rail Guarding |
|---|---|
Use Scenario: Protecting infotainment ECUs and ADAS modules from ISO 7637-2 Pulse 5a (100V, 100ms) load dump events. IC Role / Device Role / Timing Role: Input fault controller that disconnects downstream circuitry within microseconds of overvoltage detection and enforces 32ms reconnection delay. Use Value: Eliminates need for 100V-rated TVS diodes and reduces BOM cost while maintaining AEC-Q100-compliant system robustness. | Use Scenario: Securing programmable logic controllers (PLCs) and I/O modules against field wiring errors and supply polarity reversal. IC Role / Device Role / Timing Role: Bidirectional protection controller managing back-to-back N-MOSFETs to block –40V reverse voltage and sustain 60V nominal operation. Use Value: Prevents catastrophic failure from miswired 24V DC supplies, enabling field-serviceable installations without risk of board damage. |
| Portable Instrumentation Power Management | Network Equipment DC Input Protection |
Use Scenario: Battery-powered test equipment accepting multiple input sources (Li-ion pack, USB-C PD, wall adapter) with mixed polarity and voltage ranges. IC Role / Device Role / Timing Role: Smart input selector and protector using SHDN-controlled MOSFET gating and UV/OV window validation before enabling VOUT. Use Value: Enables single hardware design to safely accept 3.3V–24V inputs without manual configuration or jumper settings. | Use Scenario: Protecting PoE-powered switches and base station radios from upstream DC feed faults and lightning-induced surges. IC Role / Device Role / Timing Role: Front-end protection IC placed before DC-DC converters to absorb transient overvoltages and isolate reverse current paths. Use Value: Extends mean time between failures (MTBF) by preventing surge propagation into sensitive RF and timing circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar input protection controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC4367IMS8-1#TRPBF | 500µs GATE turn-on delay vs. 32ms; identical pinout, package, and temperature range (–40°C to +85°C). | Required where fast recovery after brief overvoltage events (e.g., motor commutation spikes) is critical. | Select LTC4367IMS8-1#TRPBF only when system-level noise immunity allows sub-millisecond reconnection. |
| TPS26631RGER | Fixed 36V overvoltage clamp; no adjustable UV/OV; integrated 100V MOSFET; 2.7V–60V operating range. | Used in space-constrained designs where discrete MOSFETs are undesirable and fixed OV threshold suffices. | Choose TPS26631RGER for simplified layout and lower component count when adjustable thresholds are unnecessary. |
Compared with LTC4367IMS8-1#TRPBF, the LTC4367IMS8#TRPBF trades faster recovery for superior noise rejection; compared with TPS26631RGER, it offers full UV/OV configurability and external MOSFET flexibility at the cost of higher design effort and board area.
Availability
LTC4367IMS8#TRPBF is available at Aetrix Electronics and suitable for automotive load dump protection, industrial PLC power guarding, and portable instrumentation requiring stable component supply across extended temperature and voltage stress conditions.
Supply support for LTC4367IMS8#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 healthcare markets.
The LTC4367IMS8#TRPBF belongs to Analog Devices' Linear Technology legacy protection controller family, engineered specifically for high-voltage, wide-input-range DC power path management in harsh environments.
FAQ
What is the absolute maximum voltage rating for the VIN pin of the LTC4367IMS8#TRPBF?
The VIN pin of the LTC4367IMS8#TRPBF has an absolute maximum rating of –40V to +100V. This rating applies under fault conditions and defines the device's ability to survive automotive load dump and reverse battery events without damage. Normal operation remains limited to 2.5V–60V, but the part sustains transient excursions beyond that range. The LTC4367IMS8#TRPBF achieves this ruggedness through internal high-voltage process design and integrated clamping structures.
Does the LTC4367IMS8#TRPBF require external TVS diodes for 100V overvoltage protection?
No, the LTC4367IMS8#TRPBF does not require external TVS diodes for 100V overvoltage protection. Its internal architecture withstands +100V at VIN continuously under specified conditions, eliminating the need for external transient suppression in most 24V and 48V systems. This capability is confirmed in the Absolute Maximum Ratings table and validated in typical application circuits such as the 24V automotive example with +100V/–40V protection. The LTC4367IMS8#TRPBF achieves this with no input capacitor or TVS required for most applications.
How does the LTC4367IMS8#TRPBF handle reverse supply voltage conditions?
The LTC4367IMS8#TRPBF detects negative VIN via an internal reverse-voltage monitor and responds by connecting the GATE pin directly to VIN. This action forces both external back-to-back N-channel MOSFETs into cutoff, blocking current flow to VOUT while preventing body diode conduction. The device sustains –40V continuously and reacts within microseconds, as shown in Figure 8 waveforms. Reverse protection is automatic and requires no external components - a core feature of the LTC4367IMS8#TRPBF.
What is the purpose of the 32ms GATE turn-on delay in the LTC4367IMS8#TRPBF?
The 32ms GATE turn-on delay in the LTC4367IMS8#TRPBF filters noise and prevents chattering during fault recovery. After UV or OV conditions clear, the device waits 32ms before re-enabling the gate drive - long enough to reject 50Hz/60Hz AC line noise and transient spikes. This delay is inherent to the LTC4367IMS8#TRPBF (not configurable) and is distinct from the faster 500µs delay of the LTC4367-1 variant. It ensures stable power delivery to downstream loads.
Can the UV and OV thresholds of the LTC4367IMS8#TRPBF be set independently?
Yes, the UV and OV thresholds of the LTC4367IMS8#TRPBF are fully independent and user-adjustable via separate external resistor dividers connected to the UV and OV pins. Each input has a precise 0.5V comparator threshold with 25mV hysteresis, allowing asymmetric windows (e.g., UV = 3.5V, OV = 18V). Leakage currents below 10nA permit high-value resistors, minimizing power loss. This independent configurability is a defining feature of the LTC4367IMS8#TRPBF.
LTC4367IMS8#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 ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
LTC4367IMS8#TRPBF FAQ
1.How can I place an order for LTC4367IMS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4367IMS8#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 LTC4367IMS8#TRPBF reliable?
The price and inventory of LTC4367IMS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC4367IMS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC4367IMS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4367IMS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4367IMS8#TRPBF?
LTC4367IMS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4367IMS8#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 LTC4367IMS8#TRPBF?
For technical support, including LTC4367IMS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4367IMS8#TRPBF requirements.
6.How does Aetrix verify that LTC4367IMS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC4367IMS8#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 LTC4367IMS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC4367IMS8#TRPBF?
All LTC4367IMS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4367IMS8#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 LTC4367IMS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC4367IMS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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