My Inquiry
My Account
Analog Devices Inc. LTC4367IMS8#PBF
- Part No.:
- LTC4367IMS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Power Management - Specialized
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC4367IMS8#PBF.pdf
- Description:
- SUPPLY PROTECTION CONTROLLER
- Quantity:
- Payment:
- Shipping:
Inventory:960
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC4367IMS8#PBF from Analog Devices is a high-voltage, precision overvoltage/undervoltage/reverse supply protection controller for automotive and industrial power inputs. It controls back-to-back N-channel MOSFETs to enforce a user-defined 7V–36V valid window, withstands –40V to 100V transients, blocks 50/60Hz AC, and delivers 13.1V gate drive with 32ms fault recovery - deployed in 24V automotive load-dump protection circuits.
For engineers reviewing the LTC4367IMS8#PBF datasheet, LTC4367IMS8#PBF pinout, LTC4367IMS8#PBF application, or LTC4367IMS8#PBF equivalent, key selection criteria include its –40°C to 85°C operating range, MSOP-8 package, adjustable UV/OV thresholds via resistive dividers, low 70µA operating current, and compatibility with dual N-channel MOSFETs such as Si7942 for <100V systems.
Technical Context
The LTC4367IMS8#PBF integrates two fast (1µs propagation), low-leakage (<10nA) comparators for independent UV and OV monitoring, each with 25mV hysteresis. Its internal charge pump generates gate drive referenced to VOUT, enabling full enhancement of external N-MOSFETs even at VIN = 2.5V.
A dedicated reverse-voltage detection circuit connects GATE to VIN when negative input is sensed, forcing M2 off while leveraging body diode blocking. The 32ms turn-on delay debounces live connections and rejects line-frequency AC, distinguishing it from the 500µs variant LTC4367IMS8-1#PBF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Protection Range | –40V to 100V: withstands automotive load dump (ISO 7637-2 Pulse 5a) and reverse battery connection without external TVS or input capacitor. |
| Operating Voltage | 2.5V to 60V: supports wide-input industrial and automotive supplies including nominal 12V/24V/48V systems. |
| UV/OV Thresholds | Adjustable via resistive divider; typical 500mV comparator reference enables precise 7V UV / 36V OV windows with ±25mV hysteresis. |
| Gate Drive | ΔVGATE up to 13.1V (VIN ≥12V): ensures robust N-MOSFET enhancement across temperature and load, eliminating need for P-channel or high-side drivers. |
| Quiescent Current | 70µA typical (active), 5µA (shutdown): enables always-on protection in battery-backed systems without significant drain. |
| Fault Recovery | 32ms GATE turn-on delay after UV/OV fault clearance: filters noise and prevents chattering during transient events like ignition spikes. |
| Package | 8-Lead Plastic MSOP: surface-mount compatible with standard reflow profiles; exposed pad optional for thermal relief. |
Pinout & Package
Package: 8-Lead Plastic MSOP (MS8), 3.0mm × 3.0mm footprint, –40°C to 85°C operating range (I-grade).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | High-voltage input supply sense | Withstands –40V to 100V; powers internal LDO and enables operation above 2.5V; reverse voltage triggers automatic GATE-to-VIN clamping. |
| UV | Undervoltage comparator input | 0.5V falling threshold with 25mV hysteresis; connects to resistive divider to set lower fault limit (e.g., 7V); leakage <10nA allows high-R dividers. |
| OV | Overvoltage comparator input | 0.5V rising threshold with 25mV hysteresis; sets upper fault limit (e.g., 36V); clamp required if voltage exceeds 5V. |
| GND | Device ground reference | Common return for internal regulators, comparators, and logic; exposed pad may be left floating or tied to PCB ground. |
| GATE | Charge-pump gate drive output | Drives gates of back-to-back N-MOSFETs; referenced to VOUT; provides up to 13.1V enhancement; sinks 60mA during fault. |
| VOUT | Output voltage sense reference | Senses load-side voltage; serves as charge pump return; enables accurate gate drive regulation relative to load rail. |
| FAULT | Open-drain fault indicator | Pulled low on UV/OV fault, SHDN assertion, or VIN < UVLO (2.2V); drives external LED or microcontroller interrupt. |
| SHDN | Shutdown control input | Active-low enable; pulls GATE low via 90µA sink; places device in 5µA shutdown mode; threshold 0.75V typical. |
Key Features
| Feature | Design Value |
|---|---|
| AC power blocking | 32ms turn-on delay inherently rejects 50Hz/60Hz AC input - eliminates need for rectification or additional filtering in dual-supply systems. |
| No input TVS or capacitor required | Robust –40V to 100V input rating and internal clamping allow direct connection to unfiltered automotive or industrial rails. |
| Reverse supply protection | Dedicated comparator automatically ties GATE to negative VIN, ensuring M2 remains off and blocking reverse current path. |
| Low-power operation | 70µA operating current and 5µA shutdown current support always-on protection in energy-sensitive applications like telematics. |
| Back-to-back N-MOSFET control | Eliminates body-diode conduction path and enables bidirectional blocking - critical for reverse polarity and load-dump isolation. |
Applications
| Automotive Load Dump Protection | Industrial Power Input Conditioning |
|---|---|
|
Use Scenario: Protecting infotainment ECUs from ISO 7637-2 Pulse 5a (100V/100ms) transients during alternator load dump. IC Role / Device Role / Timing Role: Primary input protection controller enforcing 7V–36V window; initiates 32ms debounce before reconnecting load after fault. Use Value: Enables use of cost-effective N-channel MOSFETs (e.g., Si7942) instead of expensive high-voltage P-channel devices or discrete TVS + diode solutions. |
Use Scenario: Securing programmable logic controllers (PLCs) against field-wiring errors, reverse battery insertion, or AC adapter misconnection. IC Role / Device Role / Timing Role: Fault-isolation controller monitoring 24V DC input; asserts FAULT signal to PLC host upon UV/OV violation. Use Value: Prevents catastrophic damage to downstream 3.3V/5V logic by disconnecting load within microseconds of fault detection. |
| Portable Instrumentation Power Management | Network Equipment Redundant Supply Selection |
|
Use Scenario: Battery-powered test equipment accepting multiple input sources (AC adapter, USB PD, Li-ion pack) with mixed polarity risk. IC Role / Device Role / Timing Role: Polarity-agnostic input supervisor; uses SHDN to coordinate between sources and disables GATE during source handover. Use Value: Eliminates need for manual polarity checking or mechanical interlocks - improves field usability and reduces service downtime. |
Use Scenario: Dual-input telecom switches selecting between primary and backup -48V DC feeds while preventing backfeed. IC Role / Device Role / Timing Role: One-shot enable controller per supply rail; FAULT outputs feed OR-ing logic to prioritize active source. Use Value: Ensures seamless failover without cross-conduction or latch-up, meeting GR-1089-CORE surge immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar overvoltage/undervoltage protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC4367IMS8-1#PBF | 500µs GATE turn-on delay vs. 32ms; identical pinout, package, and protection ratings. | Better suited for applications requiring rapid recovery after brief transients (e.g., hot-swap servers), not AC blocking. | Select LTC4367IMS8-1#PBF only if 32ms debounce is too slow and AC rejection is unnecessary. |
| TPS26631PWPR | Integrated 60V eFuse with current limiting; fixed 6.5V UV/36V OV thresholds; no reverse voltage protection. | Designed for current-limited hot-swap, not high-energy transients; lacks –40V reverse blocking and AC rejection. | Choose TPS26631PWPR for compact current-limiting protection where reverse polarity risk is absent and precise voltage window tuning is not required. |
Compared with LTC4367IMS8-1#PBF, the LTC4367IMS8#PBF provides deterministic AC rejection and superior noise immunity; compared with TPS26631PWPR, it delivers true bidirectional blocking and field-configurable thresholds - making it uniquely suitable for automotive and ruggedized industrial inputs.
Availability
LTC4367IMS8#PBF is available at Aetrix Electronics and suitable for automotive surge protection, industrial automation power conditioning, and portable instrumentation requiring stable component supply across extended temperature ranges.
Supply support for LTC4367IMS8#PBF 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) designs high-performance analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The LTC4367 family was engineered specifically for robust front-end power protection in harsh environments - delivering integrated overvoltage, undervoltage, and reverse-polarity defense without external passive components.
FAQ
What is the operating temperature range of the LTC4367IMS8#PBF?
The LTC4367IMS8#PBF is rated for –40°C to +85°C ambient operation (I-grade). This makes it suitable for under-hood automotive applications and industrial control cabinets where thermal stability is critical. Its internal comparators and charge pump maintain specification compliance across this full range, with parameters like UV/OV threshold drift limited to ±25mV and gate drive variation under 1V.
Does the LTC4367IMS8#PBF require an external TVS diode for 100V load dump protection?
No, the LTC4367IMS8#PBF does not require an external TVS diode for 100V transient suppression. Its absolute maximum VIN rating is –40V to 100V, and its internal architecture safely clamps and routes fault energy without degradation. Application Note 4367 confirms operation with no input capacitor or TVS in most automotive and industrial scenarios - verified using ISO 7637-2 Pulse 5a waveforms.
How does the LTC4367IMS8#PBF achieve reverse supply protection without external components?
The LTC4367IMS8#PBF achieves reverse supply protection via an internal comparator that detects negative VIN and instantly connects the GATE pin to VIN. This forces the source-gate voltage of the downstream N-MOSFET (M2) to zero, keeping it fully off. The upstream MOSFET's (M1) body diode conducts briefly but is blocked by M2's cutoff - creating a bidirectional open circuit. No external diodes, relays, or controllers are needed.
Can the LTC4367IMS8#PBF be used with a single N-channel MOSFET instead of back-to-back devices?
No - the LTC4367IMS8#PBF requires back-to-back N-channel MOSFETs to provide full reverse polarity and bidirectional blocking. A single N-MOSFET would allow reverse current flow through its body diode. The datasheet explicitly specifies dual N-channel configuration (e.g., Si7942) and shows internal logic designed to control both gates simultaneously for symmetrical conduction and blocking behavior.
What is the purpose of the 32ms GATE turn-on delay in the LTC4367IMS8#PBF?
The 32ms GATE turn-on delay in the LTC4367IMS8#PBF serves two critical functions: (1) it debounces noisy or bouncing input connections (e.g., hot-plug barrel jacks), and (2) it blocks 50Hz/60Hz AC power by ensuring the gate remains off for longer than half an AC cycle. This eliminates need for external rectifiers or AC detection circuitry - a unique capability confirmed in the LTC4367 datasheet Figure TA01b and Applications Information section.
LTC4367IMS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- 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#PBF FAQ
1.How can I place an order for LTC4367IMS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4367IMS8#PBF 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#PBF reliable?
The price and inventory of LTC4367IMS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC4367IMS8#PBF is usually 5 days.
3.What payment methods are accepted for LTC4367IMS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4367IMS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4367IMS8#PBF?
LTC4367IMS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4367IMS8#PBF 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#PBF?
For technical support, including LTC4367IMS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4367IMS8#PBF requirements.
6.How does Aetrix verify that LTC4367IMS8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC4367IMS8#PBF 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#PBF meets industry standards.
7.What is the process for return or replacement of LTC4367IMS8#PBF?
All LTC4367IMS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4367IMS8#PBF, 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#PBF part is unused and in its original packaging.
Return procedure for LTC4367IMS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC4367IMS8#PBF Tags
-
TPS2511DGNR
Texas Instruments
-
UTC2000/MG
Microchip Technology
-
TUSB320HAIRWBR
Texas Instruments
-
TPS61252DSGR
Texas Instruments
-
PI5USB30216CXUAEX
Diodes Incorporated
-
SN6501DBVR
Texas Instruments
-
CYPD3177-24LQXQT
Infineon Technologies
-
SN6501QDBVRQ1
Texas Instruments
-
STUSB1600AQTR
STMicroelectronics
-
SN6505BDBVR
Texas Instruments
-
SN6501DBVT
Texas Instruments
-
TPS65150PWPR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
