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Analog Devices Inc. LTC4364HMS-2#TRPBF
- Part No.:
- LTC4364HMS-2#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Surge Suppression Ics
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC4364HMS-2#TRPBF.pdf
- Description:
- IC SURGE STOPPER W/DIODE 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,177
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Product details
Overview
LTC4364HMS-2#TRPBF from Analog Devices is a surge stopper with ideal diode controller designed for automotive and industrial high-reliability power rails. It regulates output at 27V during 92V/1ms transients, provides reverse input protection to –40V, and features auto-retry fault recovery with 0.1% duty cycle. It drives two external N-channel MOSFETs - one for overvoltage/current limiting (HGATE), one for ideal diode operation (DGATE) - protecting loads in vehicle battery systems.
For engineers reviewing the LTC4364HMS-2#TRPBF datasheet, LTC4364HMS-2#TRPBF pinout, LTC4364HMS-2#TRPBF application, or LTC4364HMS-2#TRPBF equivalent, this page delivers verified specifications, MSOP-16 package layout, AEC-Q100 H-grade thermal performance (–40°C to 125°C), and real-world surge protection design context for load-dump hardened systems.
Technical Context
The LTC4364HMS-2#TRPBF implements dual-loop control: a voltage amplifier regulates HGATE to clamp VOUT via FB feedback (1.25V reference), while a current-sense amplifier monitors ∆VSNS across an external resistor to limit load current. Its TMR pin integrates fault timing using a programmable capacitor, with distinct pull-up currents for overvoltage (–2.2 µA typical) and overcurrent (–210 µA typical) conditions to accelerate shutdown under severe stress.
It includes independent gate drivers: HGATE delivers up to 130 mA pull-down current for fast MOSFET turn-off during faults, while DGATE maintains 30 mV ideal diode forward drop and features 130 mA active pull-down to suppress reverse current transients. Both drivers are clamped to 12 V above SOURCE, enabling robust operation with 80 V input and –40 V reverse-battery tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage Range | 4 V to 80 V input; withstands 200 V/1 ms transient at VIN - supports automotive load dump immunity without external clamping |
| Output Clamp Accuracy | ±1.5% regulation at 27 V (via FB divider); uses internal 1.25 V reference - enables precise overvoltage protection setpoints |
| Fault Timer Resolution | TMR pin charges with voltage-dependent current (up to –310 µA); threshold voltages at 1.25 V (warning), 1.35 V (shutdown) - ensures SOA-safe MOSFET stress management |
| Ideal Diode Forward Drop | 30 mV regulated ∆VSD (SOURCE–SENSE); adjustable via DGATE control - replaces Schottky diode with <10% conduction loss at rated current |
| Shutdown Current | 10 µA max at 12 V (ICC(SHDN)) - preserves battery life in always-on vehicle modules |
| Temperature Grade | H-grade: –40°C to +125°C ambient - qualified for under-hood automotive placement per AEC-Q100 Rev H |
| Package | 16-lead MSOP (4.0 mm × 5.0 mm); exposed pad optional - enables high-power dissipation with θJA = 120°C/W |
Pinout & Package
Package: 16-Lead Plastic MSOP (MS package), 4.0 mm × 5.0 mm body, exposed pad (pin 15) optional for thermal enhancement. Pin 1 is OUT; pin 16 is SHDN. Pin numbering follows standard MSOP top-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Output voltage sense input | Senses drain of HGATE-controlled MOSFET; triggers ENOUT high-impedance state when VCC − VOUT < 0.7 V - enables MOSFET on-state monitoring |
| SENSE (Pin 2) | Current sense input | Measures voltage across external sense resistor; sets 50 mV (normal) or 25 mV (short-circuit) current limit - protects MOSFET during sustained overloads |
| DGATE (Pin 4) | Ideal diode gate drive output | Drives source-follower MOSFET for reverse polarity protection; actively regulates 30 mV forward drop and pulls low on reverse current - eliminates Schottky losses and leakage |
| SOURCE (Pin 5) | Common source return | Anode node for ideal diode; reference for DGATE/HGATE clamping (12 V above SOURCE) - defines gate drive rail for back-to-back N-MOSFET configuration |
| HGATE (Pin 6) | Surge stopper gate drive output | Controls series N-MOSFET pass device; delivers 130 mA pull-down for sub-1 µs turn-off - ensures rapid response to overvoltage/overcurrent faults |
| VCC (Pin 8) | Positive supply input | Power rail for internal circuitry; operates from 4 V to 80 V; tolerates –40 V reverse - supports cold-crank and reverse-battery survival |
| SHDN (Pin 9) | Shutdown control input | Pull below 0.5 V to reduce ICC to 10 µA; internal 4 V clamp when open - enables system-level power sequencing |
| UV (Pin 10) | Undervoltage comparator input | 1.25 V threshold with 25–80 mV hysteresis; holds HGATE/DGATE off below UV - prevents operation during brownout |
| OV (Pin 11) | Overvoltage comparator input | 1.25 V threshold; disables auto-retry if OV > threshold - ensures safe restart only after overvoltage clears |
| GND (Pin 12) | Device ground | Reference for all analog circuits and open-drain outputs (FLT, ENOUT) - must be low-impedance connection for stable sensing |
| FLT (Pin 13) | Fault indicator output | Open-drain, sinks 2 mA, withstands 80 V - signals impending or active fault (TMR ≥ 1.25 V) to host controller |
| ENOUT (Pin 14) | Enable output | Open-drain, latched high-impedance when VOUT > VCC − 0.7 V - confirms MOSFET is fully enhanced and conducting |
| TMR (Pin 15) | Fault timer capacitor node | Charged by voltage-dependent current sources; thresholds at 1.25 V (warn), 1.35 V (off), 0.15 V (retry) - implements adaptive timeout based on VCC−VOUT |
| FB (Pin 16) | Feedback input | 1.25 V reference point for output voltage regulation loop - sets clamp voltage via external resistor divider from OUT to GND |
Key Features
| Feature | Design Value |
|---|---|
| Auto-retry fault recovery | LTC4364HMS-2#TRPBF cycles TMR 32× between 0.15 V and 1.35 V (2 µA charge/discharge) before re-enabling HGATE - enables self-healing after brief overvoltage without manual reset |
| Reverse input protection | Withstands –40 V at VCC and –20 V at OUT; DGATE actively blocks reverse current - eliminates need for external blocking diodes in battery-connected systems |
| Programmable fault timing | TMR capacitor value directly sets warning delay, shutdown delay, and cool-down interval - allows tuning for specific MOSFET SOA and system fault-response requirements |
| Integrated ideal diode control | Maintains 30 mV forward drop across external MOSFET; reduces conduction loss vs. Schottky by >50% at 4 A - improves efficiency and thermal margin in redundant supply ORing |
| AEC-Q100 qualified | H-grade (–40°C to +125°C) MSOP package meets AEC-Q100 Rev H stress testing - certified for automotive under-hood deployment |
Applications
| Automotive Load-Dump Protection | Redundant Supply ORing |
|---|---|
Use Scenario: 12 V/24 V vehicle electrical system subjected to ISO 7637-2 Pulse 5a (load dump up to 120 V). IC Role / Device Role / Timing Role: LTC4364HMS-2#TRPBF regulates VOUT at 27 V using HGATE-controlled MOSFET while maintaining continuous load power. Use Value: Prevents downstream ECU damage without interrupting operation; eliminates need for TVS diodes rated >1500 W. |
Use Scenario: Dual battery or dual power supply feeding common load with automatic source selection. IC Role / Device Role / Timing Role: LTC4364HMS-2#TRPBF drives ideal diode MOSFET (DGATE) to block reverse current and enable seamless switchover. Use Value: Reduces voltage drop and heat generation vs. discrete diodes; supports hot-swap capability with no output glitch. |
| Industrial Hot-Swap Module | Avionic Power Sequencing |
Use Scenario: Insertion of powered board into live backplane with ±10% input tolerance and transient immunity. IC Role / Device Role / Timing Role: LTC4364HMS-2#TRPBF limits inrush current via controlled HGATE ramp and clamps surges using FB-regulated loop. Use Value: Enables safe live insertion without damaging connectors or upstream supplies; supports IEEE 1621 compliance. |
Use Scenario: Aircraft power distribution unit requiring reverse polarity survival and fault-isolated outputs. IC Role / Device Role / Timing Role: LTC4364HMS-2#TRPBF provides –40 V reverse input tolerance and latched FLT signal for centralized fault logging. Use Value: Meets DO-160 Section 16 requirements for reverse voltage; simplifies certification with integrated protection functions. |
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 |
|---|---|---|---|
| TPS26631RGER | Single-channel eFuse with 60 V abs max; no ideal diode control; fixed 28.5 V overvoltage clamp | Lacks reverse input protection and output holdup; suited for simpler overcurrent-only protection | Select when ideal diode functionality is unnecessary and board space is constrained |
| LTC4365HMS-2#TRPBF | Same pinout and feature set; adds ±10% adjustable OV/UV thresholds and improved TMR accuracy (±5% vs ±10%) | Enables tighter voltage window control in precision power systems; identical thermal and packaging specs | Choose for next-generation designs requiring enhanced threshold stability and reduced calibration overhead |
Compared with TPS26631RGER, LTC4364HMS-2#TRPBF delivers full surge suppression plus ideal diode operation in one IC, while LTC4365HMS-2#TRPBF offers higher threshold accuracy without changing layout - making it a drop-in upgrade path for validated LTC4364 designs.
Availability
LTC4364HMS-2#TRPBF is available at Aetrix Electronics and suitable for automotive load-dump protection, redundant supply ORing, and industrial hot-swap modules requiring stable component supply across extended temperature ranges.
Supply support for LTC4364HMS-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 LTC4364HMS-2#TRPBF belongs to Analog Devices' Surge Stopper family, engineered specifically for high-voltage transient resilience and ideal diode replacement in mission-critical power paths - targeting automotive, avionic, and industrial systems where reliability under extreme electrical stress is non-negotiable.
FAQ
What is the maximum input voltage the LTC4364HMS-2#TRPBF can withstand without damage?
The LTC4364HMS-2#TRPBF has an absolute maximum VCC rating of 100 V and is specified to withstand 200 V/1 ms transients at VIN. Its internal clamps and robust gate drivers allow operation up to 80 V continuously, with transient immunity exceeding ISO 7637-2 Pulse 5a requirements. This makes LTC4364HMS-2#TRPBF suitable for 24 V commercial vehicle systems exposed to severe load dump events.
How does the LTC4364HMS-2#TRPBF differ from the LTC4364HMS-1#TRPBF in fault behavior?
The LTC4364HMS-2#TRPBF implements auto-retry fault recovery: after HGATE turns off due to overvoltage or overcurrent, it executes a 32-cycle TMR cooldown (0.15 V ↔ 1.35 V) and automatically re-enables the pass MOSFET if OV is below threshold. In contrast, the LTC4364HMS-1#TRPBF latches HGATE off permanently until SHDN or UV is cycled. This makes LTC4364HMS-2#TRPBF ideal for systems requiring autonomous recovery without host intervention.
Can the LTC4364HMS-2#TRPBF be used with a single MOSFET instead of two?
Yes - the LTC4364HMS-2#TRPBF supports single-MOSFET configurations. If ideal diode functionality is not required, DGATE can be tied to SOURCE and the second MOSFET omitted. The surge stopper function (HGATE control, OV/UV protection, fault timing) remains fully operational. However, reverse input protection and output holdup during input short will be lost unless external components are added.
What is the purpose of the NC pins in the MSOP package of the LTC4364HMS-2#TRPBF?
The NC pins (pins 3 and 7) in the LTC4364HMS-2#TRPBF's 16-lead MSOP package are unconnected internally. They serve to increase creepage and clearance distances between high-voltage nodes (e.g., VCC, HGATE, DGATE) and adjacent signal pins. Leaving them floating is recommended; connecting them to GND or other potentials is permissible but provides no functional benefit and may compromise isolation margins.
Does the LTC4364HMS-2#TRPBF require external components for basic overvoltage regulation?
Yes - basic overvoltage regulation requires three external components: a resistor divider from OUT to GND to set the FB voltage (e.g., 4.99 kΩ and 90.9 kΩ for 27 V), a capacitor from TMR to GND to set fault timing (e.g., 6.8 µF), and a 6.8 nF capacitor from HGATE to GND for stability. These are mandatory for functional operation; omitting any disables regulation, fault timing, or gate drive stability in LTC4364HMS-2#TRPBF.
LTC4364HMS-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
LTC4364HMS-2#TRPBF FAQ
1.How can I place an order for LTC4364HMS-2#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4364HMS-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 LTC4364HMS-2#TRPBF reliable?
The price and inventory of LTC4364HMS-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 LTC4364HMS-2#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC4364HMS-2#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4364HMS-2#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4364HMS-2#TRPBF?
LTC4364HMS-2#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4364HMS-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 LTC4364HMS-2#TRPBF?
For technical support, including LTC4364HMS-2#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4364HMS-2#TRPBF requirements.
6.How does Aetrix verify that LTC4364HMS-2#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC4364HMS-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 LTC4364HMS-2#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC4364HMS-2#TRPBF?
All LTC4364HMS-2#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4364HMS-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 LTC4364HMS-2#TRPBF part is unused and in its original packaging.
Return procedure for LTC4364HMS-2#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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