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Analog Devices Inc. LTC4364CMS-2#TRPBF
- Part No.:
- LTC4364CMS-2#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Surge Suppression Ics
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC4364CMS-2#TRPBF.pdf
- Description:
- SURGE STOPPER W/DIODE 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,694
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Product details
Overview
LTC4364CMS-2#TRPBF from Analog Devices is a surge stopper with integrated ideal diode controller for automotive and industrial high-reliability power rails. It protects downstream loads from 200V/1ms transients, regulates output to 27V during overvoltage (e.g., load dump), provides reverse input protection to –40V, and features auto-retry fault recovery with 0.1% duty cycle. Used in 12V/24V vehicle subsystems requiring uninterrupted operation during brownouts or input shorts.
For engineers reviewing the LTC4364CMS-2#TRPBF datasheet, LTC4364CMS-2#TRPBF pinout, LTC4364CMS-2#TRPBF application, or LTC4364CMS-2#TRPBF equivalent, key selection criteria include its 4V–80V operating range, adjustable OV/UV thresholds, timed current-limited circuit breaker, ideal diode holdup capability, and AEC-Q100 qualification for automotive use.
Technical Context
The LTC4364CMS-2#TRPBF implements dual-control architecture: a voltage amplifier regulates HGATE to clamp output at user-defined levels via FB feedback, while a current amplifier limits ∆VSNS to 50mV (or 25mV during output short) by modulating HGATE. Its fault timer (TMR) uses voltage-dependent charging current-5× higher during overcurrent-to enforce SOA-safe MOSFET turn-off timing.
Its ideal diode function actively controls DGATE to maintain ~30mV forward drop across M2, minimizing conduction loss and enabling fast reverse-current shutdown (<1.5μs). Unlike LTC4364-1, the -2 variant automatically restarts after fault cool-down (32-cycle 0.15V–1.35V cycling) if OV pin is below threshold-enabling self-healing behavior in redundant supply ORing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage Range | 4V to 80V input; withstands –40V reverse input and 200V/1ms transient-supports cold-crank and load-dump survival in automotive systems. |
| Output Clamp Accuracy | ±1.5% regulation at FB = 1.25V; enables precise 27V clamping using external resistor divider-critical for protecting 28V-rated downstream ICs. |
| Fault Timer Behavior | Auto-retry with 0.1% duty cycle (LTC4364-2); TMR cycles 32× between 0.15V and 1.35V before HGATE re-enables-prevents latch-up while limiting average fault power. |
| Ideal Diode Forward Drop | 30mV typical regulation (∆VSD); reduces conduction loss vs Schottky diode-improves efficiency and thermal margin in 4A+ applications. |
| Shutdown Current | 10μA max at 12V; enables ultra-low-power disable mode-essential for always-on vehicle modules meeting ISO 16750 quiescent current limits. |
| Package & Temp Range | 16-lead MSOP, 0°C to 70°C ambient; footprint-compatible with industrial and commercial automotive sub-systems without extended temp grading. |
| AEC-Q100 Qualification | Qualified per AEC-Q100 Rev H Grade 3 (–40°C to 85°C) when ordered as #WPBF variant; this #TRPBF version is commercial-grade but shares identical die and functionality. |
Pinout & Package
Package: 16-Lead Plastic MSOP (MS package), 3.0mm × 4.9mm body, exposed pad optional for thermal relief. Pin pitch: 0.65mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Output voltage sense reference | Senses drain of HGATE-controlled MOSFET; ENOUT asserts high-Z when VOUT > VVCC − 0.7V-indicates full pass-device conduction. |
| SENSE (Pin 2) | Current sense input | Monitors voltage across external sense resistor; triggers overcurrent protection at 50mV (or 25mV during output short)-enables precise current limiting. |
| DGATE (Pin 4) | Ideal diode gate drive output | Drives source of back-to-back N-MOSFET for reverse polarity protection; actively regulates 30mV forward drop-replaces Schottky with lower loss and faster reverse blocking. |
| SOURCE (Pin 5) | Common source return | Anode node for ideal diode; reference for SENSE, DGATE, and HGATE-must connect directly to MOSFET sources to avoid sensing error. |
| HGATE (Pin 6) | Surge stopper gate drive output | Controls main N-MOSFET pass device; regulates output voltage or limits current via closed-loop control-primary interface for transient suppression. |
| VCC (Pin 8) | Main supply input | Accepts 4V–80V; internal clamp allows operation down to –40V-enables reverse-battery survivability without external protection. |
| SHDN (Pin 9) | Shutdown enable input | Pull <0.5V to reduce ICC to 10μA; open or pull >2.2V for normal operation-supports system-level low-power sequencing. |
| UV (Pin 10) | Undervoltage comparator input | Threshold = 1.25V ±2.5%; hysteresis = 25–80mV-holds HGATE/DGATE off during brownout; resets latch on LTC4364-1 only. |
| OV (Pin 11) | Overvoltage comparator input | Threshold = 1.25V ±2.5%; disables auto-retry if asserted-ensures safe restart only after overvoltage clears. |
| GND (Pin 12) | Device ground reference | Return path for internal bias and logic; must be low-impedance connection to minimize noise coupling into sensitive analog blocks. |
| FLT (Pin 13) | Fault indicator output | Open-drain, sinks 2mA, rated to 80V-pulls low at TMR = 1.25V (warning), stays low until fault clears and cool-down completes (LTC4364-2). |
| ENOUT (Pin 14) | Enable output status | Open-drain, high-Z when VOUT > VVCC − 0.7V-signals MOSFET fully enhanced; latched reset at VOUT < 2.2V-useful for system power-good monitoring. |
| TMR (Pin 15) | Fault timer capacitor node | Charged by voltage-dependent current source; sets warning (1.25V), turn-off (1.35V), and retry (0.15V) thresholds-defines SOA-safe fault response timing. |
| FB (Pin 16) | Output voltage feedback input | 1.25V internal reference; connects to resistive divider from OUT to GND-sets regulated output voltage (e.g., 27V = 1.25V × (R1+R2)/R2). |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable overvoltage clamp | Set via external FB resistor divider; maintains precise 27V output during 92V surges-preserves load functionality during ISO 7637-2 Pulse 5a events. |
| Auto-retry fault recovery | 0.1% duty cycle with 32-cycle TMR cool-down-enables self-healing in redundant supplies without manual reset or microcontroller intervention. |
| Ideal diode holdup | 30mV regulated forward drop + fast reverse-current shutdown (<1.5μs)-extends holdup time during input shorts and eliminates Schottky leakage/power loss. |
| Reverse input protection | Withstands –40V applied to VIN-eliminates need for external series diode or TVS in reverse-battery scenarios per ISO 16750-2. |
| Timed current-limited circuit breaker | Adjustable TMR capacitor sets fault timeout inversely proportional to VVCC–VOUT-protects MOSFET within SOA during sustained overvoltage like load dump. |
| Low-quiescent shutdown | 10μA ICC(SHDN) at 12V-meets automotive "parked mode" current budgets for always-on ECUs and telematics modules. |
Applications
| Automotive Load Dump Protection | Redundant Supply ORing |
|---|---|
|
Use Scenario: 12V vehicle subsystem (e.g., ADAS camera ECU) subjected to ISO 7637-2 Pulse 5a (92V/400ms) during alternator load dump. IC Role / Device Role / Timing Role: LTC4364CMS-2#TRPBF regulates output to 27V via HGATE-controlled MOSFET while maintaining continuous power delivery-no interruption to safety-critical imaging. Use Value: Prevents damage to 28V-rated image sensor and ISP; eliminates need for bulky TVS + linear regulator cascades-reduces BOM cost and PCB area by >30%. |
Use Scenario: Dual-battery backup system in industrial gateway where primary and secondary 24V supplies must seamlessly share load without backfeed. IC Role / Device Role / Timing Role: LTC4364CMS-2#TRPBF drives ideal diode MOSFETs on each rail, enabling ORing with <30mV forward drop and automatic reverse-current blocking-no cross-conduction. Use Value: Achieves >99.5% efficiency vs discrete diode ORing; supports hot-swap insertion of backup battery without system reboot or voltage sag. |
| Industrial Input Short Holdup | Avionic Power Sequencing |
|
Use Scenario: Programmable logic controller (PLC) I/O module experiencing momentary input short due to field wiring fault. IC Role / Device Role / Timing Role: LTC4364CMS-2#TRPBF holds output voltage via DGATE-controlled ideal diode while HGATE shuts off upstream-maintains 5V logic rail for 10ms+ using local bulk cap. Use Value: Prevents PLC watchdog timeout and process interruption; avoids costly system-level restart and data loss in mission-critical automation. |
Use Scenario: Avionics display unit requiring strict power-up sequencing: 5V logic must stabilize before 12V backlight enables. IC Role / Device Role / Timing Role: LTC4364CMS-2#TRPBF monitors ENOUT to generate clean power-good signal-delays backlight enable until VOUT > VVCC − 0.7V confirms MOSFET full enhancement. Use Value: Replaces discrete supervisor IC + MOSFET driver; simplifies design, improves timing accuracy (±100ns), and reduces single-point failure risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar surge protection and ideal diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC4364IMS-2#TRPBF | Identical functionality and pinout; rated for –40°C to 85°C industrial temperature range vs 0°C to 70°C of LTC4364CMS-2#TRPBF. | Suitable for under-hood automotive or outdoor industrial enclosures where ambient exceeds 70°C. | Select when extended temperature operation is required; same layout, no redesign needed. |
| TPS26631PWPR | Single-chip hot-swap controller with integrated 80V MOSFET; lacks ideal diode function, adjustable OV clamp, and AEC-Q100 qualification. | Applicable for simpler overcurrent-only protection in non-automotive 24V systems; cannot replace LTC4364CMS-2#TRPBF in reverse-polarity or holdup scenarios. | Choose only for cost-sensitive, space-constrained designs where ideal diode and automotive compliance are not required. |
Compared with LTC4364IMS-2#TRPBF, the LTC4364CMS-2#TRPBF offers identical surge suppression and ideal diode performance but targets commercial-temperature applications-reducing cost where extended thermal range is unnecessary. Versus TPS26631PWPR, it delivers superior system-level protection (reverse polarity, holdup, precise OV clamp) at the expense of higher BOM count due to external MOSFETs.
Availability
LTC4364CMS-2#TRPBF is available at Aetrix Electronics and suitable for automotive infotainment, industrial PLC I/O modules, and avionic display power supplies requiring stable component supply, AEC-Q100-aligned reliability, and long-term lifecycle support.
Supply support for LTC4364CMS-2#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 LTC4364CMS-2#TRPBF belongs to Analog Devices' Surge Stopper family-designed specifically for robust, self-protecting power rail conditioning in harsh environments where voltage transients, reverse polarity, and continuous operation are critical requirements.
FAQ
What is the maximum transient voltage the LTC4364CMS-2#TRPBF can withstand?
The LTC4364CMS-2#TRPBF withstands 200V/1ms transients at VIN as specified in the datasheet Absolute Maximum Ratings. Its internal VCC clamp and robust gate drivers allow reliable operation during ISO 7637-2 Pulse 5a (92V/400ms) and similar automotive load dump events without external protection components.
How does the LTC4364CMS-2#TRPBF differ from the LTC4364-1 variant?
The LTC4364CMS-2#TRPBF implements auto-retry fault recovery: after overvoltage or overcurrent timeout, it cycles TMR 32 times and automatically re-enables HGATE if OV is deasserted. The LTC4364-1 latches off permanently until SHDN or UV is pulsed-making the -2 variant ideal for self-healing redundant power systems.
Can the LTC4364CMS-2#TRPBF be used with 48V automotive architectures?
Yes-the LTC4364CMS-2#TRPBF operates from 4V to 80V and is qualified for automotive use. For 48V systems, ensure external MOSFETs (M1/M2) are rated ≥80V VDS, add 15V Zeners between DGATE/SOURCE and HGATE/SOURCE per datasheet recommendations, and verify TMR capacitor voltage rating exceeds VVCC–VOUT.
What is the purpose of the TMR pin on the LTC4364CMS-2#TRPBF?
The TMR pin on the LTC4364CMS-2#TRPBF sets fault timing via an external capacitor. It charges at rates dependent on VVCC–VOUT; reaching 1.25V triggers FLT warning, 1.35V turns off HGATE, and 0.15V initiates auto-retry cycling. This ensures MOSFET SOA compliance and enables programmable fault response.
Does the LTC4364CMS-2#TRPBF require external MOSFETs?
Yes-the LTC4364CMS-2#TRPBF is a controller IC and requires two external N-channel MOSFETs: one (M1) driven by HGATE for surge regulation/current limiting, and another (M2) driven by DGATE for ideal diode reverse protection and holdup. This architecture enables optimized FET selection for voltage, current, and thermal requirements.
LTC4364CMS-2#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Clamping:
- Adjustable
- Technology:
- External Switch
- Number of Circuits:
- 1
- Applications:
- General Purpose
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP
LTC4364CMS-2#TRPBF FAQ
1.How can I place an order for LTC4364CMS-2#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4364CMS-2#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 LTC4364CMS-2#TRPBF reliable?
The price and inventory of LTC4364CMS-2#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC4364CMS-2#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC4364CMS-2#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4364CMS-2#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4364CMS-2#TRPBF?
LTC4364CMS-2#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4364CMS-2#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 LTC4364CMS-2#TRPBF?
For technical support, including LTC4364CMS-2#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4364CMS-2#TRPBF requirements.
6.How does Aetrix verify that LTC4364CMS-2#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC4364CMS-2#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 LTC4364CMS-2#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC4364CMS-2#TRPBF?
All LTC4364CMS-2#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4364CMS-2#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 LTC4364CMS-2#TRPBF part is unused and in its original packaging.
Return procedure for LTC4364CMS-2#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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