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Analog Devices Inc. LTC4364HS-1#TRPBF
- Part No.:
- LTC4364HS-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Surge Suppression Ics
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC4364HS-1#TRPBF.pdf
- Description:
- SURGE STOPPER W/DIODE 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,686
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Product details
Overview
LTC4364HS-1#TRPBF from Analog Devices is a surge stopper with ideal diode controller designed for automotive-grade overvoltage and reverse-polarity protection. It regulates output at 27V during transients (e.g., load dump), drives external N-channel MOSFETs for high-side pass control and reverse-input blocking, and features latch-off fault response, 4V–80V input range, and –40°C to +125°C operation.
For engineers reviewing the LTC4364HS-1#TRPBF datasheet, LTC4364HS-1#TRPBF pinout, LTC4364HS-1#TRPBF application, or LTC4364HS-1#TRPBF equivalent, key selection criteria include its 16-lead SO package, AEC-Q100 qualification, 1.25V FB reference, 1.25V TMR warning threshold, and latch-off behavior distinguishing it from auto-retry LTC4364-2 variants.
Technical Context
The LTC4364HS-1#TRPBF integrates two independent gate drivers: HGATE controls an external high-side N-MOSFET for overvoltage/overcurrent-regulated pass-through, while DGATE drives a second N-MOSFET as an ideal diode for reverse-input protection and output holdup. Its fault timer (TMR) uses voltage-dependent current charging to scale timeout with VCC–VOUT, ensuring safe operating area compliance during sustained surges.
It implements precise 1.25V thresholds for OV and UV comparators with hysteresis, latches HGATE off after TMR reaches 1.35V, and requires external resistive feedback (FB) to set clamp voltage. The device remains functional down to 4V supply-critical for cold-crank automotive operation-and withstands –40V reverse input and –20V reverse output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 80V continuous; survives –40V reverse input and 200V/1ms transient at VIN |
| Output Clamp Accuracy | Regulates VOUT via 1.25V FB reference; typical 27V clamp set by external resistor divider |
| Fault Response | Latch-off (non-recovering) after TMR reaches 1.35V; requires SHDN or UV reset pulse to restore operation |
| Shutdown Current | 10µA max at 12V - enables low-power system sleep modes without compromising surge readiness |
| Operating Temperature | –40°C to +125°C (H-grade); qualified per AEC-Q100 Grade 1 for under-hood automotive use |
| Package | 16-lead plastic SO; exposed pad not present; compatible with standard SO-16 PCB footprints and reflow profiles |
| Reverse Protection | Blocks –40V reverse input via ideal diode control; limits reverse output to –20V |
Pinout & Package
Package: 16-lead plastic SO (Small Outline), 300 mil width, RoHS-compliant, rated for –40°C to +125°C ambient operation. Pin 1 marked with dot; pin numbering follows standard SO convention (counterclockwise from top-left).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Output voltage sense input | Senses drain of HGATE-controlled MOSFET; triggers ENOUT high-impedance when VCC–VOUT < 0.7V |
| SENSE (Pin 2) | Current sense input | Monitors voltage across external sense resistor; sets 50mV (normal) or 25mV (short) current limit threshold |
| NC (Pin 3) | No connection | Not internally bonded; may be left floating or grounded for creepage enhancement |
| DGATE (Pin 4) | Ideal diode gate drive output | Drives source of back-to-back N-MOSFET for reverse-input blocking and output holdup; fast 130mA pull-down on reverse current |
| SOURCE (Pin 5) | Common source return | Reference node for SENSE, DGATE, and HGATE; connects to sources of both external MOSFETs |
| HGATE (Pin 6) | Surge stopper gate drive output | Controls high-side N-MOSFET pass device; regulated to maintain 1.25V at FB during overvoltage |
| NC (Pin 7) | No connection | Not internally bonded; electrically isolated; no routing required |
| VCC (Pin 8) | Positive supply input | Primary power rail (4V–80V); powers internal circuitry and charge pumps; tolerates –40V reverse bias |
| SHDN (Pin 9) | Shutdown control input | Pulling <0.5V disables all functions and reduces ICC to 10µA; open or >2.2V enables operation |
| GND (Pin 12) | Device ground reference | Signal and power return for internal amplifiers and comparators; must connect to system ground plane |
| FLT (Pin 13) | Fault open-drain output | Pulls low when TMR ≥1.25V (warning); remains low after latch-off; sinks up to 2mA, withstands 80V |
| ENOUT (Pin 14) | Enable output open-drain | High-impedance when VOUT > VCC–0.7V (MOSFET fully on); latched; resets when VOUT < 2.2V |
| TMR (Pin 15) | Fault timer capacitor interface | Capacitor to GND sets timing: 1.25V = fault warning, 1.35V = HGATE turn-off, 0.15V = retry threshold (LTC4364-2 only) |
| FB (Pin 16) | Voltage regulator feedback input | Connects to resistive divider from OUT to GND; 1.25V internal reference sets output clamp voltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive under-hood environments (–40°C to +125°C) with extended reliability testing |
| Latch-off fault response | Permanently disables HGATE after timeout unless manually reset via SHDN or UV pin - prevents uncontrolled restarts in persistent faults |
| Adjustable 27V output clamp | Set precisely using external resistor divider on FB pin; maintains stable load voltage during 92V input surges |
| Ideal diode forward regulation | Maintains ~30mV VSD across external MOSFET, reducing conduction loss vs Schottky and enabling >99% efficiency at high load currents |
| Reverse input protection to –40V | Active DGATE control blocks reverse battery connection without external diodes or fuses |
| Low 10µA shutdown current | Enables always-on surge protection in battery-powered systems without significant parasitic drain |
Applications
| Automotive Load Dump Protection | Redundant Power ORing |
|---|---|
|
Use Scenario: Protecting infotainment ECUs and ADAS modules from 120V/100ms load dump transients in 12V vehicle electrical systems. IC Role / Device Role / Timing Role: Surge stopper regulating VOUT at 27V while driving high-side MOSFET; ideal diode holds output during input brownout or short. Use Value: Enables uninterrupted operation during ISO 7637-2 Pulse 5a events; eliminates need for TVS clamps with high clamping voltage or large thermal mass. |
Use Scenario: Combining dual 24V supplies in industrial PLCs where failure of one supply must not disrupt downstream logic. IC Role / Device Role / Timing Role: Ideal diode controller replacing Schottky ORing diodes; surge stopper ensures fault isolation if upstream supply fails catastrophically. Use Value: Reduces forward drop from ~0.4V (Schottky) to ~30mV, cutting power loss by >85% and eliminating thermal derating concerns. |
| Hot-Swap Power Entry | Avionic Power Conditioning |
|
Use Scenario: Safely inserting powered circuit cards into backplanes with live 48V distribution buses. IC Role / Device Role / Timing Role: Controls inrush via HGATE; limits peak current with adjustable ∆VSENSE; DGATE blocks reverse current during insertion bounce. Use Value: Prevents bus voltage sag and arcing at connectors; eliminates need for discrete inrush limiters and reverse-blocking diodes. |
Use Scenario: Protecting flight control computers from lightning-induced transients and reverse polarity in aircraft 28V DC systems. IC Role / Device Role / Timing Role: Dual-protection IC providing overvoltage clamp, reverse-input blocking, and latch-off fault containment per DO-160 Section 22 requirements. Use Value: Single-chip solution meets stringent avionic reliability standards while reducing BOM count and board space vs discrete approaches. |
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 |
|---|---|---|---|
| LTC4364HS-2#TRPBF | Auto-retry fault response instead of latch-off; same pinout, package, and temperature grade | Preferred where automatic recovery after transient clearance is required (e.g., non-safety-critical subsystems) | Select LTC4364HS-2#TRPBF only if system architecture permits automatic restart after overvoltage; LTC4364HS-1#TRPBF is mandatory for fail-safe lockout. |
| TPS26631RHFR | Integrated 60V eFuse with current limiting only; no ideal diode, no adjustable OV clamp, no reverse input protection | Used for basic overcurrent protection in telecom/datacom; lacks automotive surge handling and reverse polarity blocking | Choose TPS26631RHFR only for cost-sensitive, non-automotive applications requiring simple current limiting without surge or reverse protection. |
Compared with LTC4364HS-2#TRPBF, the LTC4364HS-1#TRPBF provides deterministic fault containment essential for safety-critical automotive domains, while TPS26631RHFR offers lower integration but cannot replace the dual-protection functionality or AEC-Q100 qualification of the LTC4364HS-1#TRPBF.
Availability
LTC4364HS-1#TRPBF is available at Aetrix Electronics and suitable for automotive ECU protection, redundant power ORing, hot-swap entry, and avionic power conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC4364HS-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 industrial, automotive, communications, and healthcare markets.
The LTC4364 product line delivers integrated surge suppression and ideal diode control for harsh-environment power systems, specifically engineered to replace discrete TVS-diode-MOSFET solutions in automotive and avionic applications.
FAQ
What is the key functional difference between LTC4364HS-1#TRPBF and LTC4364HS-2#TRPBF?
The LTC4364HS-1#TRPBF latches off the HGATE driver after a fault timeout and requires manual reset via SHDN or UV pin, whereas the LTC4364HS-2#TRPBF automatically retries after a cooldown cycle. This makes LTC4364HS-1#TRPBF suitable for fail-safe automotive systems where uncontrolled restart could compromise safety integrity.
Can LTC4364HS-1#TRPBF regulate output voltage to a value other than 27V?
Yes - the LTC4364HS-1#TRPBF regulates output based on the external resistor divider connected to the FB pin and its internal 1.25V reference. By selecting appropriate resistor values (e.g., 102kΩ and 4.99kΩ), users can set any clamp voltage from ~3V to near VIN, including 27V as shown in the typical application.
Does LTC4364HS-1#TRPBF require external MOSFETs, and what are the critical selection criteria?
Yes - LTC4364HS-1#TRPBF drives two external N-channel MOSFETs: one for high-side pass (HGATE) and one for ideal diode (DGATE). Critical parameters include RDS(ON) (to minimize conduction loss), SOA rating (to survive surge energy), and gate charge (to ensure fast switching with the 130mA DGATE pull-down).
How does LTC4364HS-1#TRPBF handle reverse battery connection?
The LTC4364HS-1#TRPBF blocks reverse input down to –40V using active DGATE control of the ideal diode MOSFET. When VCC goes negative, internal circuitry pulls DGATE to SOURCE, turning off the MOSFET and preventing reverse current flow - eliminating the need for external series diodes or fuses.
Is LTC4364HS-1#TRPBF pin-compatible with other package variants like DFN or MSOP?
No - the LTC4364HS-1#TRPBF uses a 16-lead SO package with specific pin assignments (e.g., NC on Pins 3 and 7). DFN (14-lead) and MSOP (16-lead) variants have different pinouts and thermal characteristics; direct PCB replacement is not possible without layout revision.
LTC4364HS-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
LTC4364HS-1#TRPBF FAQ
1.How can I place an order for LTC4364HS-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4364HS-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 LTC4364HS-1#TRPBF reliable?
The price and inventory of LTC4364HS-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 LTC4364HS-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC4364HS-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4364HS-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4364HS-1#TRPBF?
LTC4364HS-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4364HS-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 LTC4364HS-1#TRPBF?
For technical support, including LTC4364HS-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4364HS-1#TRPBF requirements.
6.How does Aetrix verify that LTC4364HS-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC4364HS-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 LTC4364HS-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC4364HS-1#TRPBF?
All LTC4364HS-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4364HS-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 LTC4364HS-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC4364HS-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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