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Analog Devices Inc. LTC4364IS-1#TRPBF
- Part No.:
- LTC4364IS-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Surge Suppression Ics
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC4364IS-1#TRPBF.pdf
- Description:
- SURGE STOPPER W/DIODE 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,123
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Product details
Overview
LTC4364IS-1#TRPBF from Analog Devices is a surge stopper with ideal diode controller in 16-lead SO package, designed for automotive-grade overvoltage/undervoltage protection and reverse input/output protection. It regulates output at adjustable clamp voltage (e.g., 27V), withstands 200V/1ms transients, latches off during fault, and supports 4V–80V input range with –40°C to +85°C operation.
For engineers reviewing the LTC4364IS-1#TRPBF datasheet, LTC4364IS-1#TRPBF pinout, LTC4364IS-1#TRPBF application, or LTC4364IS-1#TRPBF equivalent, key selection criteria include latch-off fault behavior, 1.25V FB reference accuracy, 10μA shutdown current, TMR-based fault timing, and dual N-MOSFET gate drive capability for surge + ideal diode functions.
Technical Context
The LTC4364IS-1#TRPBF integrates two independent control loops: a voltage-regulating amplifier driving HGATE to clamp output via external N-MOSFET M1, and an ideal diode controller driving DGATE to maintain ~30mV forward drop across M2. Its fault timer (TMR) uses voltage-dependent current sources-5× higher for overcurrent than overvoltage-to dynamically scale timeout based on VCC–VOUT.
It features precise 1.25V thresholds for OV/UV comparators with 12mV and 50mV hysteresis respectively, latched fault response (LTC4364-1 variant), and robust pin ratings: VCC/SOURCE/SENSE/OUT withstand –40V to 100V, while DGATE/HGATE are clamped to SOURCE +12V. The device remains functional down to 4V supply, enabling cold-crank operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 80V continuous; survives –40V reverse input and 200V/1ms transient |
| Output Clamp Accuracy | ±2.4% (1.22V–1.28V FB reference) enables stable 27V regulation under load dump |
| Fault Response | Latch-off (LTC4364-1): HGATE stays low after TMR reaches 1.35V until SHDN or UV reset |
| Shutdown Current | 10μA max at 12V - enables always-on monitoring without battery drain |
| Ideal Diode Regulation | Maintains ~30mV VSD forward drop; reduces power loss vs Schottky and enables holdup during input short |
| Overcurrent Threshold | 45–55mV (VSENSE–VOUT) with dynamic scaling to 18–32mV during output short (<1.5V) |
| Package & Temp Grade | 16-lead SO, –40°C to +85°C industrial temperature range (I-grade) |
Pinout & Package
16-lead plastic SO package (S package), exposed pad not applicable; pin 1 = OUT, pin 16 = SHDN; NC pins (3 & 7) unconnected internally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (1) | Output voltage sense input | Senses MOSFET M1 drain; enables ENOUT high-impedance state when VOUT > VCC − 0.7V |
| SENSE (2) | Current sense input | Monitors voltage across external sense resistor; triggers overcurrent protection at 45–55mV |
| NC (3) | No connection | Not internally bonded; may be left open or grounded for creepage |
| DGATE (4) | Ideal diode gate driver | Drives M2 source-follower; actively regulates VSD ≈ 30mV; fast pull-down blocks reverse current |
| SOURCE (5) | Common source return | Anode node for ideal diode; reference for DGATE/HGATE clamps and SENSE measurement |
| HGATE (6) | Surge stopper gate driver | Drives M1 common-source; regulates VOUT via FB loop; pulls low at 1.35V TMR threshold |
| NC (7) | No connection | Not internally bonded; no electrical function |
| VCC (8) | Main supply input | 4V–80V operating range; tolerates –40V reverse; powers internal circuitry and charge pumps |
| SHDN (9) | Shutdown control | Pull <0.5V to reduce ICC to 10μA; internal 4V clamp when open; resets latch after fault |
| GND (12) | Device ground | Reference for all analog circuits and open-drain outputs (FLT/ENOUT) |
| FLT (13) | Fault indicator output | Open-drain; pulls low at TMR = 1.25V warning; sinks 2mA; withstands 80V |
| ENOUT (14) | Enable output | Open-drain; high-impedance when M1 fully on (VOUT > VCC − 0.7V); resets at VOUT < 2.2V |
| TMR (15) | Fault timer capacitor node | Charged by voltage-dependent current sources; thresholds at 1.25V (warn), 1.35V (off), 0.15V (retry) |
| FB (16) | Feedback input | 1.25V reference point; connects to resistive divider from OUT to GND for adjustable clamp voltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Rated for automotive applications per I-grade (–40°C to +85°C) with controlled manufacturing |
| Adjustable output clamp | Set via external FB divider; 1.25V reference enables precise 27V or other values for load dump compliance |
| Reverse input protection | Withstands –40V at VCC/SOURCE; DGATE actively blocks reverse current before body diode conduction |
| Output holdup during input failure | Ideal diode maintains VOUT during input short/brownout by regulating VSD and blocking reverse discharge |
| Dynamic fault timing | TMR current scales with VCC–VOUT; shorter timeout at higher differential voltage protects MOSFET SOA |
| Latched fault response | LTC4364-1 variant holds HGATE low post-fault; requires explicit SHDN or UV reset - prevents auto-retry in persistent faults |
Applications
| Automotive Load Dump Protection | Redundant Supply ORing |
|---|---|
Use Scenario: Protecting infotainment ECUs from 120V/100ms load dump transients in 12V vehicle systems. IC Role / Device Role / Timing Role: Surge stopper controller regulating output at 27V using external N-MOSFET; latched-off response prevents repeated stress during sustained overvoltage. Use Value: Enables uninterrupted operation during brief transients while safeguarding downstream DC/DC converters and microcontrollers from overvoltage damage. |
Use Scenario: Combining two independent 24V supplies in industrial PLC backplanes with automatic failover. IC Role / Device Role / Timing Role: Ideal diode controller driving back-to-back N-MOSFETs to replace Schottky diodes; provides <30mV forward drop and reverse blocking. Use Value: Eliminates 0.3–0.5V diode losses, reduces heat dissipation, and prevents reverse current flow during supply switchover or failure. |
| Hot-Swap Power Insertion | Industrial Equipment Input Protection |
Use Scenario: Safely inserting powered modules into live 48V telecom shelves without arcing or bus disturbance. IC Role / Device Role / Timing Role: Controls inrush via HGATE slew rate; monitors overcurrent with 45mV threshold and timed circuit breaker. Use Value: Limits peak inrush current to safe levels, prevents bus collapse, and avoids false trips during capacitive charging. |
Use Scenario: Protecting programmable logic controllers from field wiring errors including reverse polarity and accidental shorts. IC Role / Device Role / Timing Role: Dual-function controller providing –40V reverse input tolerance, –20V reverse output blocking, and undervoltage lockout at 1.25V. Use Value: Prevents damage from installation mistakes and brownouts, ensuring system reliability in harsh factory environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar surge protection and ideal diode control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC4364IS-2#TRPBF | Auto-retry fault behavior instead of latch-off; 0.1% retry duty cycle during overvoltage | Suitable where automatic recovery after transient is required; not appropriate for safety-critical latch-required systems | Select LTC4364IS-2#TRPBF only if fault auto-restart is explicitly desired and OV pin monitoring is implemented. |
| TPS26631RGER | Integrated 60V eFuse with fixed 2.5A current limit; no ideal diode or adjustable clamp; smaller 20-pin QFN | Targets simpler overcurrent-only protection; lacks reverse input holdup, output regulation, and automotive surge rating | Choose TPS26631RGER for cost-sensitive, space-constrained designs needing basic current limiting without ideal diode or clamp functions. |
Compared with LTC4364IS-2#TRPBF, the LTC4364IS-1#TRPBF provides deterministic fault containment via latch-off, critical for systems where uncontrolled restart could cause cascading failure; versus TPS26631RGER, it delivers full surge regulation, ideal diode holdup, and AEC-Q100 qualification - essential for automotive and high-reliability industrial use.
Availability
LTC4364IS-1#TRPBF is available at Aetrix Electronics and suitable for automotive ECU protection, redundant power ORing, hot-swap insertion, industrial PLC input stages, and avionic surge suppression requiring stable component supply and long-term lifecycle support.
Supply support for LTC4364IS-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, communications, and automotive markets.
The LTC4364 product line delivers integrated surge stopper + ideal diode functionality for high-availability power systems, specifically engineered to meet automotive load dump, reverse battery, and hot-swap requirements with minimal external components.
FAQ
What is the key functional difference between LTC4364IS-1#TRPBF and LTC4364IS-2#TRPBF?
The LTC4364IS-1#TRPBF latches off the HGATE pin after a fault timeout and requires manual reset via SHDN or UV pin, whereas the LTC4364IS-2#TRPBF automatically retries after a cool-down cycle. This makes LTC4364IS-1#TRPBF suitable for safety-critical applications where uncontrolled restart is unacceptable. Both share identical pinout, package, and electrical specs except fault behavior.
How does LTC4364IS-1#TRPBF protect against reverse input voltage?
The LTC4364IS-1#TRPBF withstands –40V at VCC and SOURCE pins without damage. Its DGATE controller actively turns off the ideal diode MOSFET when reverse voltage exceeds –30mV, preventing body diode conduction and reverse current flow. This eliminates need for external series diodes while maintaining low forward drop during normal operation.
Can LTC4364IS-1#TRPBF regulate output voltage to a value other than 27V?
Yes - the LTC4364IS-1#TRPBF uses a 1.25V FB reference with external resistor divider from OUT to GND. By selecting appropriate R1/R2 values, users can set any output clamp voltage (e.g., 15V, 24V, 36V) within MOSFET and layout constraints. The datasheet provides design equations and example configurations for custom clamp points.
What is the role of the TMR pin in LTC4364IS-1#TRPBF operation?
The TMR pin in LTC4364IS-1#TRPBF sets fault timing via an external capacitor. During overvoltage or overcurrent, current sources charge TMR: at 1.25V, FLT asserts warning; at 1.35V, HGATE latches off. Unlike LTC4364-2, no auto-retry occurs - TMR must be manually reset via SHDN or UV. Current scales with VCC–VOUT to protect MOSFET SOA.
Does LTC4364IS-1#TRPBF require external MOSFETs, and what are key selection criteria?
Yes - LTC4364IS-1#TRPBF drives two external N-channel MOSFETs: M1 (HGATE-controlled surge stopper) and M2 (DGATE-controlled ideal diode). For M1, select low RDS(ON), high SOA, and rated VDS > 100V; for M2, prioritize low gate charge and <10mΩ RDS(ON) to minimize forward drop and reverse recovery effects.
LTC4364IS-1#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 16-SOIC (0.154", 3.90mm 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-SO
LTC4364IS-1#TRPBF FAQ
1.How can I place an order for LTC4364IS-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4364IS-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 LTC4364IS-1#TRPBF reliable?
The price and inventory of LTC4364IS-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 LTC4364IS-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC4364IS-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4364IS-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4364IS-1#TRPBF?
LTC4364IS-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4364IS-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 LTC4364IS-1#TRPBF?
For technical support, including LTC4364IS-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4364IS-1#TRPBF requirements.
6.How does Aetrix verify that LTC4364IS-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC4364IS-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 LTC4364IS-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC4364IS-1#TRPBF?
All LTC4364IS-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4364IS-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 LTC4364IS-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC4364IS-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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