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Analog Devices Inc. LTC4364IDE-1#TRPBF
- Part No.:
- LTC4364IDE-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Surge Suppression Ics
- Package:
- 14-WFDFN Exposed Pad
- Datasheet:
-
LTC4364IDE-1#TRPBF.pdf
- Description:
- SURGE STOPPER W/DIODE 14DFN
- Quantity:
- Payment:
- Shipping:
Inventory:839
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Product details
Overview
LTC4364IDE-1#TRPBF from Analog Devices is a surge stopper with ideal diode controller designed for automotive and industrial high-reliability power rails. It protects downstream loads from 200V/1ms transients, regulates output at adjustable clamp voltage (e.g., 27V), provides reverse input protection to –40V, and drives two external N-channel MOSFETs for overvoltage/overcurrent limiting and bidirectional blocking. Used in automotive infotainment power supplies.
For engineers reviewing the LTC4364IDE-1#TRPBF datasheet, LTC4364IDE-1#TRPBF pinout, LTC4364IDE-1#TRPBF application, or LTC4364IDE-1#TRPBF equivalent, key selection criteria include latch-off fault behavior, 4V–80V operating range, 10μA shutdown current, –40°C to 85°C temperature grade, and DFN-14 package compatibility with AEC-Q100 requirements.
Technical Context
The LTC4364IDE-1#TRPBF implements dual-loop control: a voltage amplifier regulates HGATE to maintain 1.25V at FB during overvoltage, while a current amplifier limits ∆VSNS to 50mV (or 25mV during output short) by modulating HGATE. Its fault timer uses TMR pin charging proportional to (VCC – VOUT), enabling SOA-aware timeout scaling.
It integrates an ideal diode controller that actively regulates DGATE to hold ∆VSD at 30mV under forward conduction and pulls DGATE to SOURCE within 1.5μs when reverse voltage exceeds –30mV. UV and OV comparators independently disable HGATE/DGATE and inhibit retry-LTC4364-1 latches off after fault timeout, requiring 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 transient suppression up to 200V with external clamping. |
| Output Clamp Accuracy | ±2.4% over temperature - ensures regulated output stays within ±0.65V of setpoint (e.g., 27V ±0.65V) across –40°C to 85°C. |
| Fault Timer Thresholds | TMR warning at 1.25V, turn-off at 1.35V, retry at 0.15V - enables precise timing control via external capacitor with SOA-adaptive charge rate. |
| Shutdown Current | 10μA max at 12V - enables ultra-low-power system standby without compromising surge readiness. |
| Reverse Input Protection | Withstands –40V on VCC - allows safe reverse-battery connection in automotive environments without external diodes. |
| Overcurrent Threshold | 45mV min, 57mV max at –40°C to 125°C - sets accurate 50mV current limit with 10mΩ sense resistor (ILIM = 5A). |
| Temperature Grade | –40°C to +85°C - qualified for extended-temperature industrial and automotive cabin applications. |
Pinout & Package
Package: 14-lead (4mm × 3mm) plastic DFN with exposed pad (Pin 15), RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Output voltage sense reference | Monitors drain of HGATE-controlled MOSFET; triggers ENOUT high-impedance when VOUT > VCC – 0.7V. |
| SENSE (Pin 2) | Current sense input | Measures voltage drop across external sense resistor; controls HGATE to clamp ∆VSENSE–OUT at 50mV (or 25mV during short). |
| DGATE (Pin 3) | Ideal diode gate driver | Drives source of back-to-back N-MOSFET; maintains 30mV forward drop and shuts off within 1.5μs on reverse bias. |
| SOURCE (Pin 4) | Common source return | Anode node for ideal diode path; reference for DGATE/HGATE drive and SENSE measurement. |
| HGATE (Pin 5) | Surge stopper gate driver | Controls drain of primary N-MOSFET; regulates output voltage or limits current via closed-loop amplifiers. |
| VCC (Pin 6) | Main supply input | Accepts 4V–80V; survives –40V reverse; powers internal circuitry and charge pumps for gate drives. |
| SHDN (Pin 7) | Shutdown enable | Pulling below 0.5V reduces ICC to 10μA; open or pulled >2.2V enables operation; internal 4V clamp when floating. |
| UV (Pin 8) | Undervoltage comparator input | Falls below 1.25V to disable HGATE/DGATE; for LTC4364-1, <0.6V resets latched fault. |
| OV (Pin 9) | Overvoltage comparator input | Rises above 1.25V to inhibit retry; blocks initial turn-on if asserted at power-up. |
| GND (Pin 10) | Device ground reference | Signal and power return; connects to PCB ground plane; exposed pad may be tied to GND. |
| FLT (Pin 11) | Fault open-drain output | Pulls low at TMR = 1.25V (warning); remains low after timeout; sinks 2mA, withstands 80V. |
| ENOUT (Pin 12) | Enable output indicator | Goes high-impedance when VOUT > VCC – 0.7V; latched; resets when VOUT < 2.2V; requires pull-up to OUT. |
| TMR (Pin 13) | Fault timer capacitor node | Charged by current proportional to (VCC – VOUT); sets warning, turn-off, and cool-down timing intervals. |
| FB (Pin 14) | Voltage regulation feedback | Connects to resistive divider from OUT to GND; internal 1.25V reference sets output clamp voltage. |
Key Features
| Feature | Design Value |
|---|---|
| Latch-off fault response | LTC4364-1 permanently disables HGATE after timeout - eliminates uncontrolled retries in critical systems. |
| SOA-adaptive fault timing | TMR charge current scales with (VCC – VOUT), shortening timeout during high-voltage faults to protect MOSFET SOA. |
| Reverse input tolerance | –40V on VCC pin - eliminates need for external reverse-polarity protection diodes in automotive battery interfaces. |
| Ultra-low shutdown current | 10μA max at 12V - enables always-on surge protection in battery-backed systems without significant drain. |
| Integrated ideal diode control | Active 30mV forward-drop regulation and sub-2μs reverse-turnoff - replaces Schottky with lower loss and faster blocking. |
Applications
| Automotive Infotainment Power Supply | Industrial PLC I/O Module Protection |
|---|---|
Use Scenario: Protects head unit power rail against 120V load-dump transients in 12V vehicle electrical systems. IC Role / Device Role / Timing Role: Surge stopper controller regulating output at 27V while driving external N-MOSFET; latched fault prevents re-engagement during sustained overvoltage. Use Value: Enables uninterrupted operation during ISO 7637-2 Pulse 5a transients; eliminates need for TVS clamps rated >1000W. | Use Scenario: Secures 24V DC input to programmable logic controller I/O card against field-wiring faults and ESD-induced surges. IC Role / Device Role / Timing Role: Dual-function controller providing overvoltage clamping and reverse-input blocking via two external MOSFETs. Use Value: Withstands –40V reverse polarity and 200V/1ms transients per IEC 61000-4-5; reduces BOM count by replacing discrete diode + TVS + regulator. |
| Redundant 48V Telecom ORing | Avionics Power Sequencing Interface |
Use Scenario: ORs two independent 48V telecom rectifier outputs while preventing backfeed and isolating faults. IC Role / Device Role / Timing Role: Ideal diode controller driving N-MOSFET as low-loss forward path; fast reverse turn-off (<1.5μs) prevents cross-conduction. Use Value: Achieves <15mV forward drop vs. 300mV Schottky; eliminates thermal runaway risk during hot-swap events. | Use Scenario: Conditions aircraft 28V DC main bus before feeding flight-critical avionics subsystems. IC Role / Device Role / Timing Role: AEC-Q100 qualified surge stopper enforcing strict undervoltage lockout (UV threshold 1.25V) and overvoltage clamp (27V). Use Value: Meets DO-160 Section 16 surge immunity; latch-off behavior prevents unsafe restart after detected overvoltage event. |
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 |
|---|---|---|---|
| LTC4364IDE-2#TRPBF | Auto-retry fault behavior instead of latch-off; 0.1% retry duty cycle during overvoltage; identical pinout and specs otherwise. | Suitable where automatic recovery after transient is acceptable (e.g., non-safety-critical comms modules); not for fail-safe systems. | Select LTC4364IDE-1#TRPBF when permanent fault isolation is required; choose -2 variant only if controlled restart is explicitly desired. |
| TPS26631RGER | Single-chip 60V eFuse with integrated MOSFET; no ideal diode function; fixed 28V overvoltage clamp; no TMR-based adaptive timing. | Used for basic overcurrent/overvoltage protection without reverse-blocking or holdup capability; lacks output voltage regulation. | Choose TPS26631RGER only for cost-sensitive, space-constrained designs needing only eFuse functionality - not a functional substitute for LTC4364IDE-1#TRPBF's dual-MOSFET control. |
Compared with LTC4364IDE-2#TRPBF, the LTC4364IDE-1#TRPBF provides deterministic fault containment via latch-off, critical for safety-critical power domains; versus TPS26631RGER, it delivers full surge regulation, ideal diode holdup, and SOA-aware timing - making it uniquely suited for automotive and avionic front-end protection.
Availability
LTC4364IDE-1#TRPBF is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial PLC I/O modules, and avionics power sequencing requiring stable component supply, AEC-Q100 compliance, and extended-temperature operation.
Supply support for LTC4364IDE-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 robust front-end power protection for harsh environments, combining surge suppression, ideal diode control, and precise fault management in a single IC - engineered for automotive-grade reliability and extended-temperature operation.
FAQ
What is the key functional difference between LTC4364IDE-1#TRPBF and LTC4364IDE-2#TRPBF?
The LTC4364IDE-1#TRPBF latches off the HGATE driver after fault timeout and requires manual reset via SHDN or UV pin assertion. In contrast, the LTC4364IDE-2#TRPBF automatically retries after a cool-down cycle. Both share identical pinout, electrical specs, and package; the difference lies solely in fault recovery behavior - making LTC4364IDE-1#TRPBF appropriate for fail-safe applications where uncontrolled restart is unacceptable.
Does LTC4364IDE-1#TRPBF require external MOSFETs, and what are the critical selection criteria?
Yes, LTC4364IDE-1#TRPBF requires two external N-channel MOSFETs: one for surge stopping (HGATE-controlled) and one for ideal diode function (DGATE-controlled). Critical selection criteria include RDS(ON) ≤ 10mΩ for 5A continuous current, SOA rating sufficient for (VIN – VOUT) × ILOAD power dissipation during clamping, and logic-level gate threshold compatible with 12V gate drive swing. FDB33N25 and FDB3682 are validated examples.
How does the TMR pin enable SOA-aware fault timing in LTC4364IDE-1#TRPBF?
The TMR pin in LTC4364IDE-1#TRPBF is charged by a current proportional to (VCC – VOUT). During high-voltage faults (e.g., 92V input with 27V output), this increases charge rate, shortening the time to reach 1.35V and turn off HGATE - keeping the external MOSFET within its safe operating area. At lower differential voltages, timing extends, allowing benign transients to pass. This adaptive behavior is intrinsic to the LTC4364IDE-1#TRPBF architecture and requires only a single timing capacitor.
Can LTC4364IDE-1#TRPBF operate with reverse input polarity, and what is the limit?
Yes, LTC4364IDE-1#TRPBF supports reverse input polarity up to –40V on the VCC pin without damage or latch-up. This is achieved via internal protection circuitry that clamps reverse current and disables gate drivers. The device remains functional after reverse polarity removal, provided UV and OV thresholds are satisfied. This capability eliminates the need for external reverse-battery protection diodes in automotive applications - a core design feature of the LTC4364IDE-1#TRPBF.
What is the purpose of the ENOUT pin in LTC4364IDE-1#TRPBF, and how should it be used?
The ENOUT pin in LTC4364IDE-1#TRPBF is an open-drain status indicator that goes high-impedance when VOUT > (VCC – 0.7V), signaling that the HGATE-controlled MOSFET is fully enhanced and delivering regulated power. It must be pulled up to VOUT (not VCC) via a resistor. Its latched state resets only when VOUT drops below 2.2V - enabling reliable power-good monitoring in systems where output voltage integrity is critical, such as automotive ADAS domain controllers.
LTC4364IDE-1#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 14-WFDFN Exposed Pad
- 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:
- 14-DFN (4x3)
LTC4364IDE-1#TRPBF FAQ
1.How can I place an order for LTC4364IDE-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4364IDE-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 LTC4364IDE-1#TRPBF reliable?
The price and inventory of LTC4364IDE-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 LTC4364IDE-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC4364IDE-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4364IDE-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4364IDE-1#TRPBF?
LTC4364IDE-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4364IDE-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 LTC4364IDE-1#TRPBF?
For technical support, including LTC4364IDE-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4364IDE-1#TRPBF requirements.
6.How does Aetrix verify that LTC4364IDE-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC4364IDE-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 LTC4364IDE-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC4364IDE-1#TRPBF?
All LTC4364IDE-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4364IDE-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 LTC4364IDE-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC4364IDE-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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