My Inquiry
My Account
Analog Devices Inc. LTC4368CMS-1#PBF
- Part No.:
- LTC4368CMS-1#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Surge Suppression Ics
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC4368CMS-1#PBF.pdf
- Description:
- IC SURGE SUPPRESSION ADJ 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,540
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC4368CMS-1#PBF from Analog Devices is a bidirectional electronic circuit breaker and UV/OV protection controller for 2.5V–60V input systems, featuring ±50mV forward/reverse current sense thresholds, 80µA operating current, and control of back-to-back N-channel MOSFETs in automotive and industrial power rails.
For engineers reviewing the LTC4368CMS-1#PBF datasheet, LTC4368CMS-1#PBF pinout, LTC4368CMS-1#PBF application, or LTC4368CMS-1#PBF equivalent, key selection criteria include reverse battery protection capability, adjustable ±1.5% UV/OV thresholds, 32ms turn-on debounce, AEC-Q100 qualification (C-grade), and MSOP-10 package compatibility with hot-swap and AC-blocking requirements.
Technical Context
The LTC4368CMS-1#PBF implements dual high-speed comparators (1µs propagation) for UV and OV monitoring with 25mV hysteresis, and two independent overcurrent comparators: +50mV forward threshold and –50mV reverse threshold (LTC4368-1 variant). It drives external N-MOSFET gates via an internal charge pump delivering up to 13.1V enhancement referenced to VOUT.
Its fault-handling logic includes 32ms recovery delay after UV/OV faults, fast gate turn-off (<6µs) on overcurrent, and automatic reconnection after reverse faults when VIN − VOUT ≥ 75mV. Shutdown mode reduces supply current to 5µA, and RETRY pin configures latch-off or auto-retry behavior for forward overcurrent events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 60V operating; –40V to 100V fault protection range - enables robust operation across automotive battery transients and industrial surges. |
| Forward/Reverse OC Threshold | +50mV / –50mV (SENSE–VOUT) - sets precise 50mV current sense window for bidirectional fault detection with standard RSENSE. |
| UV/OV Threshold Accuracy | ±1.5% over temperature - ensures stable 7V–36V valid window configuration without recalibration in varying thermal environments. |
| Operating Current | 80µA typical - minimizes quiescent loss in always-on battery-backed or energy-sensitive systems. |
| Gate Drive Enhancement | Up to 13.1V above VOUT - fully enhances standard logic-level N-MOSFETs even at low VIN (e.g., 2.5V), reducing conduction loss. |
| Turn-On Delay | 32ms - debounces live-insertion events and blocks 50Hz/60Hz AC line interference during hot-swap connection. |
| Package | 10-Lead Plastic MSOP - surface-mount footprint compatible with automated assembly and thermal management in space-constrained PCBs. |
Pinout & Package
Package: 10-Lead Plastic MSOP (LTGTG marking), 0°C to 70°C ambient operating range, exposed pad optional for grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main power input rail | Accepts –40V to 100V; powers internal LDO and enables UVLO (2.2V); supports hot-swap insertion. |
| UV | Undervoltage comparator input | Connects to resistive divider; triggers GATE shutdown when VIN falls below user-set threshold (e.g., 7V). |
| OV | Overvoltage comparator input | Connects to resistive divider; triggers immediate GATE discharge when VIN exceeds user-set threshold (e.g., 36V). |
| RETRY | Forward OC recovery mode select | Grounded = latch-off; capacitor-connected = auto-retry with 5.5ms/nF cooldown (e.g., 1200ms with 22nF). |
| GND | Device reference ground | Common return for all analog and digital functions; exposed pad may be connected here for thermal relief. |
| GATE | External MOSFET gate driver output | Charge-pump-driven output; pulls up to VOUT+13.1V, pulls down fast (90mA sink) on fault; tracks VOUT when off. |
| SENSE | Current sense input | Monitors voltage drop across RSENSE; detects +50mV (forward) or –50mV (reverse) faults relative to VOUT. |
| VOUT | Output voltage sense/reference | Sense node for reverse OC comparator; reference for GATE charge pump; requires ≥1µF bypass to GND. |
| FAULT | Open-drain fault indicator | Pulled low on UV/OV/OC/SHDN assertion; requires external pull-up; signals system controller of protection event. |
| SHDN | Shutdown enable input | High (>0.75V) enables operation; low (<0.4V) forces 5µA shutdown mode and GATE discharge. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional circuit breaker | Simultaneous +50mV forward and –50mV reverse current sensing enables protection against load-to-source reverse current (e.g., battery backup discharge into faulty supply). |
| AC power blocking | 32ms turn-on delay rejects 50Hz/60Hz AC line ripple and prevents false triggering during noisy or unstable input conditions. |
| AEC-Q100 qualified | C-grade (0°C to 70°C) version meets automotive reliability standards for under-hood and infotainment power rail protection. |
| Low-power shutdown | 5µA shutdown current allows integration into always-on subsystems (e.g., CAN wake-up circuits) without significant battery drain. |
| Back-to-back N-MOSFET control | Eliminates need for P-channel high-side switches; enables use of lower-RDS(on), cost-effective N-MOSFETs with bidirectional blocking capability. |
Applications
| Automotive Power Rail Protection | Industrial Energy Storage Interface |
|---|---|
Use Scenario: Protecting infotainment head unit from reverse battery jump-start, load dump, or alternator surge in 12V/24V vehicle systems. IC Role / Device Role / Timing Role: UV/OV supervisor and bidirectional current limiter that isolates load within <6µs of fault detection and enforces 32ms clean-input validation before reconnection. Use Value: Prevents catastrophic MOSFET failure and PCB damage during –40V reverse polarity or 100V load-dump transients while maintaining AEC-Q100 compliance. | Use Scenario: Safeguarding lithium-ion battery management system (BMS) inputs during charge/discharge cycling and grid-tie inverter coupling. IC Role / Device Role / Timing Role: Bidirectional electronic fuse controlling back-to-back N-MOSFETs to block reverse current flow from battery to faulty charger and limit forward inrush during capacitor pre-charge. Use Value: Enables precise ±50mV current threshold setting for 10A-class systems, eliminating need for separate reverse-polarity diodes and reducing conduction loss by >60% vs. Schottky solutions. |
| Portable Instrumentation Power Input | Hot-Swappable Industrial Module |
Use Scenario: Securing handheld test equipment powered by interchangeable AC adapters or external batteries with variable polarity and voltage ratings. IC Role / Device Role / Timing Role: Polarity-agnostic input protector that validates VIN within user-defined 3.5V–18V window and blocks –40V reverse connections before enabling power path. Use Value: Eliminates field failures caused by incorrect adapter insertion; low 80µA quiescent current extends battery runtime in portable devices. | Use Scenario: Enabling safe insertion/removal of modular I/O cards in programmable logic controller (PLC) backplanes without powering down the entire system. IC Role / Device Role / Timing Role: Hot-swap controller with 32ms debounce and open-drain FAULT signaling to host FPGA, ensuring no glitch-induced reset during card insertion. Use Value: Guarantees clean power sequencing and prevents bus contention during live module replacement, meeting IEC 61000-4-5 surge immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional overvoltage/overcurrent protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC4368CMS-2#PBF | –3mV reverse OC threshold (vs. –50mV); optimized for ultra-low reverse leakage detection in precision sensor bias rails. | Used where microamp-level reverse current must be blocked (e.g., medical sensor front-ends), not general-purpose power path protection. | Select LTC4368CMS-2#PBF only when sub-10mV reverse sense resolution is required; otherwise LTC4368CMS-1#PBF provides superior noise immunity in industrial environments. |
| TPS26631RGER | Fixed 3.5V–60V UV/OV window; no adjustable thresholds; 1.2A max continuous current; integrated MOSFETs (no external FETs required). | Targeted at low-current USB-C PD or IoT edge nodes; lacks reverse voltage protection beyond –0.3V and has no reverse current sensing. | Choose TPS26631RGER for compact, low-cost 1A designs without reverse battery or bidirectional fault needs; LTC4368CMS-1#PBF remains necessary for –40V reverse tolerance and 10A+ scalable current handling. |
Compared with LTC4368CMS-2#PBF, the LTC4368CMS-1#PBF offers higher reverse fault noise margin and simpler RC timing for auto-retry; versus TPS26631RGER, it delivers field-configurable protection windows, true bidirectional current breaking, and automotive-grade transient resilience - making it the sole choice for robust, high-current, polarity-agnostic power rail hardening.
Availability
LTC4368CMS-1#PBF is available at Aetrix Electronics and suitable for automotive power rail protection, industrial energy storage interfaces, portable instrumentation power inputs, and hot-swappable industrial modules requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for LTC4368CMS-1#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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets with precision power management and protection solutions.
The LTC4368 product line was designed specifically for high-reliability DC power path protection in harsh environments - delivering integrated UV/OV supervision, bidirectional electronic circuit breaking, and AEC-Q100-compliant operation in compact MSOP and DFN packages.
FAQ
What is the reverse voltage protection capability of the LTC4368CMS-1#PBF?
The LTC4368CMS-1#PBF provides reverse supply protection down to –40V, automatically disconnecting the load when VIN goes negative. Its reverse current comparator triggers at –50mV (SENSE–VOUT), enabling precise detection of reverse conduction through external back-to-back N-MOSFETs. This protects against reverse battery installation and negative transients without requiring external diodes.
Does the LTC4368CMS-1#PBF support adjustable undervoltage and overvoltage thresholds?
Yes, the LTC4368CMS-1#PBF supports user-adjustable UV and OV thresholds via external resistor dividers on the UV and OV pins. Each threshold is set with ±1.5% accuracy over temperature, and the internal 0.5V comparator references with 25mV hysteresis ensure stable window-based power-good validation - critical for reliable operation in automotive and industrial 12V/24V systems.
How does the LTC4368CMS-1#PBF handle forward overcurrent faults?
Upon detecting a forward overcurrent fault (SENSE–VOUT ≥ +50mV), the LTC4368CMS-1#PBF immediately discharges the GATE pin using a 60mA sink, turning off external N-MOSFETs within 8µs. Recovery behavior depends on the RETRY pin: grounded RETRY latches off permanently until SHDN is toggled; capacitor-connected RETRY initiates auto-retry after a user-defined cooldown (e.g., 1200ms with 22nF).
Is the LTC4368CMS-1#PBF compatible with hot-swap applications?
Yes, the LTC4368CMS-1#PBF is explicitly designed for hot-swap operation. Its 32ms turn-on delay debounces live supply connections, blocks 50Hz/60Hz AC interference, and ensures the input remains within the configured UV/OV window before enabling the power path. The FAULT pin provides open-drain signaling to host controllers, and SHDN allows controlled power sequencing during insertion.
What package and temperature grade does the LTC4368CMS-1#PBF use?
The LTC4368CMS-1#PBF uses a 10-Lead Plastic MSOP package (LTGTG marking) rated for 0°C to 70°C ambient operation. It is the commercial-grade variant of the LTC4368 family and is AEC-Q100 qualified for automotive applications - making it suitable for under-dash infotainment, body control modules, and other non-under-hood automotive subsystems.
LTC4368CMS-1#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Voltage - Clamping:
- Adjustable
- Technology:
- External Switch
- Number of Circuits:
- 1
- Applications:
- -
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
LTC4368CMS-1#PBF FAQ
1.How can I place an order for LTC4368CMS-1#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4368CMS-1#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 LTC4368CMS-1#PBF reliable?
The price and inventory of LTC4368CMS-1#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC4368CMS-1#PBF is usually 5 days.
3.What payment methods are accepted for LTC4368CMS-1#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4368CMS-1#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4368CMS-1#PBF?
LTC4368CMS-1#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4368CMS-1#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 LTC4368CMS-1#PBF?
For technical support, including LTC4368CMS-1#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4368CMS-1#PBF requirements.
6.How does Aetrix verify that LTC4368CMS-1#PBF is sourced from the original manufacturer or authorized distributors?
All LTC4368CMS-1#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 LTC4368CMS-1#PBF meets industry standards.
7.What is the process for return or replacement of LTC4368CMS-1#PBF?
All LTC4368CMS-1#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4368CMS-1#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 LTC4368CMS-1#PBF part is unused and in its original packaging.
Return procedure for LTC4368CMS-1#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC4368CMS-1#PBF Tags
-
TVS3300DRVR
Texas Instruments
-
TCPP01-M12
STMicroelectronics
-
TPD4S214YFFR
Texas Instruments
-
TPD6S300ARUKR
Texas Instruments
-
TBU-CA085-300-WH
Bourns Inc.
-
TBU-CA065-500-WH
Bourns Inc.
-
TBU-CA040-100-WH
Bourns Inc.
-
TBU-CA085-500-WH
Bourns Inc.
-
TBU-CA085-200-WH
Bourns Inc.
-
NX20P0408UKZ
NXP Semiconductors
-
TBU-CA085-100-WH
Bourns Inc.
-
TBU-CA050-300-WH
Bourns Inc.
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…
