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Analog Devices Inc. LTC4364CMS-1#TRPBF
- Part No.:
- LTC4364CMS-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Surge Suppression Ics
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC4364CMS-1#TRPBF.pdf
- Description:
- SURGE STOPPER W/DIODE 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,017
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Product details
Overview
LTC4364CMS-1#TRPBF from Analog Devices is a surge stopper with ideal diode controller for automotive and industrial power rail protection. It regulates output at 27V during 92V/1ms transients, provides reverse input protection to –40V, and latches off the external N-channel MOSFET upon overvoltage or overcurrent fault timeout. Used in automotive infotainment power supplies to maintain operation during load dump.
For engineers reviewing the LTC4364CMS-1#TRPBF datasheet, LTC4364CMS-1#TRPBF pinout, LTC4364CMS-1#TRPBF application, or LTC4364CMS-1#TRPBF equivalent, key selection criteria include latch-off behavior (vs auto-retry), 16-lead MSOP package compatibility, 4V–80V operating range, 1.25V FB reference accuracy, and AEC-Q100 qualification for automotive use.
Technical Context
The LTC4364CMS-1#TRPBF implements dual-loop protection: a voltage amplifier regulates HGATE to clamp VOUT via external MOSFET M1 using FB feedback, while a current amplifier limits ∆VSNS to 50mV (or 25mV during output short) by controlling the same HGATE. Fault timing is set by an external capacitor on TMR, with distinct pull-up currents for overvoltage (–2.2µA typ.) and overcurrent (–10µA typ.) conditions.
Its ideal diode function uses DGATE to regulate forward voltage across M2 to 30mV, minimizing conduction loss and enabling fast reverse-current shutdown (<1.5µs DGATE turn-off). UV and OV comparators independently disable HGATE/DGATE and inhibit retry-UV threshold is 1.25V with 50mV hysteresis; OV threshold is also 1.25V with 12mV hysteresis. The LTC4364-1 variant latches off after fault timeout and requires SHDN or UV reset.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage Range | 4V to 80V input - supports cold-crank (4V) and load-dump (up to 92V with clamping) in automotive systems. |
| Output Clamp Accuracy | ±2.4% (1.22V–1.28V FB reference) - enables precise 27V regulation with standard resistor divider. |
| Overcurrent Threshold | 50mV (typ.) at VOUT > 2.5V - sets 100A limit with 500µΩ sense resistor; drops to 25mV during output short for SOA protection. |
| Shutdown Current | 10µA (max) at 12V - ensures minimal battery drain in always-on automotive modules. |
| Reverse Input Rating | –40V - protects against reverse battery connection without external components. |
| Package & Temp Range | 16-lead MSOP, 0°C to 70°C - RoHS-compliant surface-mount package suitable for reflow assembly. |
| AEC-Q100 Grade | Not qualified - this part is commercial-grade (C-temp); automotive versions use #WPBF suffix (e.g., LTC4364IMS-1#WTRPBF). |
Pinout & Package
Package: 16-lead plastic MSOP (3mm × 4.9mm), exposed pad optional, θJA = 120°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Output voltage sense input | Senses drain of HGATE-controlled MOSFET; ENOUT asserts high-Z when VOUT > VCC − 0.7V. |
| SENSE (Pin 2) | Current sense input | Connects to high-side of sense resistor; controls HGATE to hold ∆VSNS = 50mV (or 25mV during short). |
| DGATE (Pin 4) | Ideal diode gate drive output | Drives source of back-to-back MOSFET M2; regulates VSD to 30mV; pulls low <1.5µs on reverse current. |
| SOURCE (Pin 5) | Common source return | Anode node for ideal diode; reference for HGATE/DGATE clamps; connects to MOSFET sources. |
| HGATE (Pin 6) | Surge stopper gate drive output | Controls pass MOSFET M1; regulated by voltage/current amplifiers; clamped to +12V above SOURCE. |
| VCC (Pin 8) | Main supply input | Accepts 4V–80V; withstands –40V reverse; powers internal circuitry and charge pump. |
| SHDN (Pin 9) | Shutdown control input | Pull ≤0.5V to reduce ICC to 10µA; open or pull ≥2.2V to enable; internal 4V clamp when floating. |
| UV (Pin 10) | Undervoltage comparator input | 1.25V threshold; disables HGATE/DGATE if below; 0.6V reset threshold for LTC4364-1 latch recovery. |
| OV (Pin 11) | Overvoltage comparator input | 1.25V threshold; inhibits retry during overvoltage; must fall below threshold before HGATE can restart (LTC4364-2 only). |
| GND (Pin 12) | Device ground reference | Return for internal circuits; connect to system ground plane; not tied to SOURCE or OUT. |
| FLT (Pin 13) | Fault open-drain output | Pulls low at TMR = 1.25V (warning); stays low after HGATE latch-off; sinks 2mA, withstands 80V. |
| ENOUT (Pin 14) | Enable output indicator | High-Z when VOUT > VCC − 0.7V (M1 fully on); latched; resets when VOUT < 2.2V. |
| TMR (Pin 15) | Fault timer capacitor node | Charged by current sources during fault; thresholds at 1.25V (FLT warn), 1.35V (HGATE off), 0.15V (retry start). |
| FB (Pin 16) | Voltage regulator feedback | 1.25V reference input; connects to resistive divider from OUT to GND to set clamp voltage (e.g., 27V). |
Key Features
| Feature | Design Value |
|---|---|
| Latch-off fault response | LTC4364CMS-1#TRPBF permanently disables HGATE after fault timeout until SHDN or UV reset - prevents uncontrolled cycling during sustained overvoltage. |
| Integrated ideal diode control | Regulates forward voltage across external MOSFET to 30mV, reducing conduction loss vs Schottky and enabling output holdup during input brownout or short. |
| Wide input voltage tolerance | Operates from 4V (cold crank) to 80V continuous, withstands –40V reverse input and 92V/1ms transients - eliminates need for external TVS or crowbar. |
| Adjustable fault timing | External capacitor on TMR pin sets warning (1.25V), turn-off (1.35V), and cool-down (0.15V × 32 cycles) intervals - enables SOA-optimized timing per MOSFET selection. |
| Low quiescent current | 370µA typical operating current and 10µA shutdown current - extends battery life in always-on vehicle modules. |
Applications
| Automotive Infotainment Power Supply | Industrial PLC I/O Module Protection |
|---|---|
|
Use Scenario: Protects head unit power rail during 12V battery load dump (92V/1ms) while maintaining uninterrupted operation. IC Role / Device Role / Timing Role: LTC4364CMS-1#TRPBF acts as primary surge stopper, regulating VOUT to 27V and latching off M1 only if transient exceeds TMR timeout. Use Value: Eliminates need for bulky TVS diodes and enables compact, high-reliability design meeting ISO 7637-2 Pulse 5a requirements. |
Use Scenario: Secures 24V DC input of programmable logic controller I/O card against field-wiring faults and ESD-induced surges. IC Role / Device Role / Timing Role: LTC4364CMS-1#TRPBF provides coordinated overvoltage, overcurrent, and reverse-polarity protection with single-chip integration. Use Value: Reduces BOM count by replacing discrete MOSFET drivers, comparators, timers, and protection diodes - improves MTBF and simplifies certification. |
| Redundant 48V Telecom Supply ORing | Avionics Power Sequencing Interface |
|
Use Scenario: Enables hot-swap ORing of dual 48V telecom rectifiers while blocking reverse current and limiting fault energy during failure. IC Role / Device Role / Timing Role: LTC4364CMS-1#TRPBF controls back-to-back MOSFETs for bidirectional blocking and ideal diode forward conduction. Use Value: Achieves <100mV forward drop and <1µs reverse isolation - outperforms discrete Schottky-based ORing with lower heat rise and higher efficiency. |
Use Scenario: Interfaces 28V aircraft bus to sensitive avionics subsystems requiring strict undervoltage lockout and surge immunity. IC Role / Device Role / Timing Role: LTC4364CMS-1#TRPBF enforces 1.25V UV threshold with 50mV hysteresis and clamps transients up to 92V without latch-up. Use Value: Meets RTCA DO-160 Section 22 Level 3 surge requirements while providing deterministic reset behavior via SHDN pin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar surge protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC4364IMS-1#TRPBF | Same functionality and pinout; rated for –40°C to 85°C industrial temperature range. | Required for extended-temperature industrial or under-hood automotive designs where ambient exceeds 70°C. | Select LTC4364IMS-1#TRPBF when operating ambient exceeds 70°C; otherwise LTC4364CMS-1#TRPBF is cost-optimized for commercial environments. |
| LTC4364CMS-2#TRPBF | Identical package and pinout; auto-restarts after fault cooldown instead of latching off. | Suitable for non-critical loads where automatic recovery is preferred over manual reset (e.g., auxiliary power rails). | Choose LTC4364CMS-2#TRPBF only if fault auto-retry is required; LTC4364CMS-1#TRPBF is mandatory where fail-safe shutdown is needed. |
Compared with LTC4364IMS-1#TRPBF and LTC4364CMS-2#TRPBF, the LTC4364CMS-1#TRPBF offers the lowest-cost commercial-grade solution with deterministic latch-off behavior-critical for safety-critical power domains where unattended recovery is unacceptable.
Availability
LTC4364CMS-1#TRPBF is available at Aetrix Electronics and suitable for automotive infotainment power supplies, industrial PLC I/O modules, redundant telecom ORing circuits, and avionics interface designs requiring stable component supply and full traceability.
Supply support for LTC4364CMS-1#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and automotive markets.
The LTC4364CMS-1#TRPBF belongs to the Surge Stopper family, designed specifically for robust, wide-input-voltage power rail protection in harsh environments-emphasizing latch-off reliability, integrated ideal diode control, and AEC-Q100-ready variants.
FAQ
What is the key functional difference between LTC4364CMS-1#TRPBF and LTC4364CMS-2#TRPBF?
The LTC4364CMS-1#TRPBF latches off the HGATE output after fault timeout and requires manual reset via SHDN or UV pin assertion. In contrast, the LTC4364CMS-2#TRPBF automatically restarts after a 32-cycle cool-down timer completes, provided the OV pin is below threshold. This makes LTC4364CMS-1#TRPBF appropriate for fail-safe applications where unattended recovery is prohibited.
Does LTC4364CMS-1#TRPBF support reverse battery protection?
Yes, the LTC4364CMS-1#TRPBF supports reverse input protection down to –40V on the VCC pin without external components. During reverse polarity, internal circuitry holds HGATE and DGATE low, turning off both external MOSFETs and blocking current flow. This meets common automotive reverse-battery test requirements without adding diodes or FETs.
What is the minimum sense resistor value usable with LTC4364CMS-1#TRPBF for 100A overcurrent protection?
For 100A overcurrent protection, the LTC4364CMS-1#TRPBF's 50mV threshold requires a 500µΩ sense resistor (50mV ÷ 100A = 500µΩ). At VOUT > 2.5V, the device regulates ∆VSNS to 50mV typ.; during output short (VOUT < 1.5V), it reduces the threshold to 25mV for enhanced MOSFET SOA protection.
Can LTC4364CMS-1#TRPBF be used in AEC-Q100 qualified automotive designs?
No - the LTC4364CMS-1#TRPBF is commercial-grade (0°C to 70°C) and not AEC-Q100 qualified. For automotive use, select the #WPBF variants such as LTC4364IMS-1#WTRPBF (–40°C to 85°C, AEC-Q100 Grade 3) or LTC4364HMS-1#WTRPBF (–40°C to 125°C, AEC-Q100 Grade 1), which undergo controlled manufacturing and reliability testing per automotive standards.
How does the TMR pin determine fault timing in LTC4364CMS-1#TRPBF?
The TMR pin integrates current sources that charge an external capacitor: –2.2µA during overvoltage and –10µA during overcurrent (accelerated turn-off). When TMR reaches 1.25V, FLT asserts; at 1.35V, HGATE latches off. After fault removal, TMR cycles 32 times between 0.15V and 1.35V using ±2µA currents - the 32nd crossing of 0.15V enables retry for LTC4364-2 only.
LTC4364CMS-1#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-1#TRPBF FAQ
1.How can I place an order for LTC4364CMS-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4364CMS-1#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-1#TRPBF reliable?
The price and inventory of LTC4364CMS-1#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-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC4364CMS-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4364CMS-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4364CMS-1#TRPBF?
LTC4364CMS-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4364CMS-1#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-1#TRPBF?
For technical support, including LTC4364CMS-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4364CMS-1#TRPBF requirements.
6.How does Aetrix verify that LTC4364CMS-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC4364CMS-1#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-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC4364CMS-1#TRPBF?
All LTC4364CMS-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4364CMS-1#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-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC4364CMS-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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