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Analog Devices Inc. LTC4367IDD-1#TRPBF
- Part No.:
- LTC4367IDD-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Power Management - Specialized
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC4367IDD-1#TRPBF.pdf
- Description:
- SUPPLY PROTECTION CONTROLLER
- Quantity:
- Payment:
- Shipping:
Inventory:2,927
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Product details
Overview
LTC4367IDD-1#TRPBF from Analog Devices is a high-voltage overvoltage, undervoltage, and reverse supply protection controller for 2.5V–60V input systems. It controls back-to-back N-channel MOSFETs to block faults up to +100V and –40V, features 500µs fast recovery from UV/OV faults, consumes only 70µA operating current, and is housed in an 8-lead 3mm × 3mm DFN package rated for –40°C to +85°C operation. It enables robust power path protection in automotive load-dump and industrial hot-swap applications.
For engineers reviewing the LTC4367IDD-1#TRPBF datasheet, LTC4367IDD-1#TRPBF pinout, LTC4367IDD-1#TRPBF application, or LTC4367IDD-1#TRPBF equivalent, this device delivers precise ±25mV comparator hysteresis, adjustable UV/OV thresholds via external resistive dividers, gate drive referenced to VOUT with up to 13.1V enhancement, and fault indication via open-drain FAULT output - all critical for designing reliable input-stage protection in harsh voltage environments.
Technical Context
The LTC4367IDD-1#TRPBF integrates dual precision comparators (UV and OV) with 0.5V internal reference, 1µs propagation delay, and 25mV hysteresis to detect input excursions outside user-defined windows. Its charge pump-based GATE driver delivers up to 13.1V gate enhancement relative to VOUT and supports fast 500µs turn-on after fault clearance - a key distinction from the standard LTC4367's 32ms delay.
Reverse protection is implemented via an internal switch that connects GATE to VIN when negative input is detected, forcing external back-to-back N-MOSFETs into blocking state. The device operates across –40V to 100V input transients while maintaining functional control between 2.5V and 60V, with shutdown current as low as 5µA and fault response time under 2µs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Protection Range | –40V to +100V input survivability - withstands automotive load dump and reverse battery connection without external TVS or capacitor. |
| Operating Voltage | 2.5V to 60V - supports wide-range DC supplies including 12V/24V automotive, industrial 24V/48V, and portable 3.3V/5V systems. |
| GATE Turn-On Delay | 500µs - enables rapid reconnection after transient overvoltage/undervoltage events, critical for real-time power continuity. |
| UV/OV Threshold Accuracy | ±7.5mV at 0.5V reference - ensures tight 3.5V–18V or other custom windows with minimal resistor tolerance dependency. |
| Quiescent Current | 70µA typical - minimizes standby power loss in always-on systems such as telematics or sensor nodes. |
| Shutdown Current | 5µA - allows deep sleep mode during system idle without compromising fault monitoring readiness. |
| Package | 8-lead 3mm × 3mm DFN (DD) - compact footprint compatible with high-density PCB layouts and automated assembly. |
Pinout & Package
Package: 8-lead plastic DFN (3mm × 3mm), exposed pad (optional ground connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input Supply Terminal | Withstands –40V to +100V transients; powers internal circuitry above 2.5V; connects to external N-MOSFET source. |
| UV | Undervoltage Comparator Input | Monitors VIN via resistive divider; triggers fault when voltage falls below 0.5V threshold (e.g., 3.5V setpoint); 25mV hysteresis prevents chatter. |
| OV | Overvoltage Comparator Input | Monitors VIN via resistive divider; triggers fault when voltage exceeds 0.5V threshold (e.g., 18V setpoint); same hysteresis as UV. |
| GND | Device Ground Reference | Primary ground return for internal regulators, comparators, and logic; must be low-impedance for stable fault detection. |
| GATE | External MOSFET Gate Driver Output | Charge-pump-driven output referenced to VOUT; provides up to 13.1V gate enhancement; sinks 60mA during fault for fast turn-off. |
| VOUT | Output Voltage Sense Input | Senses voltage at load side of external MOSFETs; serves as reference for GATE drive and reverse protection logic. |
| FAULT | Fault Indication Output | Open-drain output pulled low during UV/OV fault, shutdown, or VIN < UVLO; drives external LED or microcontroller interrupt. |
| SHDN | Shutdown Control Input | Active-low enable; places device in 5µA shutdown mode and forces GATE to track VOUT for controlled MOSFET turn-off. |
Key Features
| Feature | Design Value |
|---|---|
| Fast 500µs fault recovery | Enables immediate power restoration after brief transients - essential for mission-critical industrial controllers and automotive ECUs. |
| No input capacitor or TVS required | Reduces BOM count and board space by eliminating external surge suppression components for most 100V-class applications. |
| Adjustable UV/OV thresholds | Configurable via two-resistor dividers per input - supports custom voltage windows (e.g., 9–16V for 12V automotive) without redesign. |
| Reverse supply protection | Automatically disconnects load during –40V reverse polarity events using internal VIN-referenced gate clamp - no external diodes needed. |
| Low 70µA operating current | Extends battery life in portable instrumentation and enables always-on monitoring in energy-constrained IoT edge devices. |
Applications
| Automotive Load Dump Protection | Industrial Hot-Swap Power Entry |
|---|---|
Use Scenario: Protecting infotainment head units and ADAS modules from ISO 7637-2 Pulse 5a (100V/100ms) load dump events on 12V/24V vehicle batteries. IC Role / Device Role / Timing Role: Input-stage protection controller that isolates downstream circuitry within microseconds of overvoltage detection and restores power in ≤500µs post-fault. Use Value: Eliminates need for bulky TVS diodes and reduces system-level failure rate during engine cranking and alternator regulation faults. |
Use Scenario: Safely inserting/replacing power modules in programmable logic controllers (PLCs) or distributed I/O systems without powering down the entire rack. IC Role / Device Role / Timing Role: Hot-swap controller managing back-to-back N-MOSFETs to prevent inrush current and voltage sag during live insertion. Use Value: Enables zero-downtime maintenance and avoids brownouts in 24V/48V industrial control networks. |
| Portable Instrumentation Power Management | Network Equipment DC Input Protection |
Use Scenario: Securing handheld test equipment powered by interchangeable Li-ion packs or universal AC adapters with variable polarity and voltage ratings. IC Role / Device Role / Timing Role: Polarity- and voltage-window enforcement IC that blocks reverse battery installation and adapter mismatches before damage occurs. Use Value: Prevents field returns due to user-induced power supply errors and extends product lifetime in ruggedized field instruments. |
Use Scenario: Protecting Ethernet switches and PoE injectors from accidental connection to 48V telecom rectifiers with reversed polarity or overvoltage conditions. IC Role / Device Role / Timing Role: Primary DC input supervisor ensuring only valid 36–57V IEEE 802.3af/at-compliant power reaches sensitive PHY and MAC circuitry. Use Value: Avoids catastrophic latch-up in Gigabit PHYs and maintains compliance with Telcordia GR-1089 immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar input protection controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC4367IDD#TRPBF | 32ms GATE turn-on delay vs. 500µs; identical pinout, package, and temperature range (–40°C to +85°C). | Suitable for non-time-critical systems where slower recovery is acceptable, e.g., battery backup circuits with long hold-up capacitors. | Select LTC4367IDD#TRPBF if fault persistence >30ms is tolerable and cost optimization is prioritized over speed. |
| TPS26631RGER | Integrated 60V eFuse with current limiting; no adjustable UV/OV thresholds; fixed 4.5V UVLO and overcurrent protection only. | Designed for USB PD and low-voltage DC distribution; lacks reverse voltage blocking and ±40V capability. | Choose TPS26631RGER only for 5–20V applications requiring current-limiting eFuse behavior, not high-voltage window protection. |
Compared with LTC4367IDD#TRPBF, the LTC4367IDD-1#TRPBF offers 64× faster fault recovery enabling uninterrupted operation in dynamic power environments; versus TPS26631RGER, it provides full ±40V reverse blocking and user-configurable voltage windows essential for automotive and industrial 24V/48V systems.
Availability
LTC4367IDD-1#TRPBF is available at Aetrix Electronics and suitable for automotive surge protection, industrial hot-swap power entry, and portable instrumentation requiring stable component supply across extended temperature ranges and high-reliability manufacturing.
Supply support for LTC4367IDD-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 LTC4367 family is designed as high-voltage input protection controllers for demanding environments - specifically targeting automotive load-dump resilience, industrial hot-swap safety, and portable equipment polarity/overvoltage robustness.
FAQ
What is the maximum input voltage the LTC4367IDD-1#TRPBF can withstand?
The LTC4367IDD-1#TRPBF has an absolute maximum input voltage rating of –40V to +100V. This means it can survive automotive load dump transients up to +100V and reverse battery connections down to –40V without damage, while maintaining functional control across its 2.5V–60V operating range. The device achieves this through internal ruggedized input structures and does not require external TVS diodes in most applications.
How does the LTC4367IDD-1#TRPBF differ from the standard LTC4367 version?
The LTC4367IDD-1#TRPBF differs from the standard LTC4367 by its 500µs GATE turn-on delay after UV/OV fault clearance - 64× faster than the 32ms delay of the base LTC4367. All other specifications including pinout, package, temperature range (–40°C to +85°C), and protection capabilities are identical. This makes the LTC4367IDD-1#TRPBF ideal for applications requiring rapid power restoration after transient faults.
Can the LTC4367IDD-1#TRPBF be used with P-channel MOSFETs?
No, the LTC4367IDD-1#TRPBF is specifically designed to control back-to-back N-channel MOSFETs. Its GATE driver is referenced to VOUT and provides positive gate enhancement relative to the source terminal of the high-side MOSFET. Using P-channel devices would require inversion of control logic, incorrect gate drive polarity, and loss of reverse protection functionality - all incompatible with the LTC4367IDD-1#TRPBF's architecture.
What is the purpose of the exposed pad on the LTC4367IDD-1#TRPBF DFN package?
The exposed pad on the LTC4367IDD-1#TRPBF's 3mm × 3mm DFN package is electrically connected to GND and serves as a thermal and electrical ground path. It may be left unconnected or soldered to a PCB ground plane to improve thermal dissipation and reduce ground impedance - particularly beneficial during sustained fault conditions or high-current operation where internal power dissipation increases.
Does the LTC4367IDD-1#TRPBF provide overcurrent protection?
No, the LTC4367IDD-1#TRPBF does not include overcurrent protection. It is solely a voltage-window and reverse-polarity protection controller. Overcurrent detection and limiting must be implemented externally - for example, using a sense resistor and comparator feeding the SHDN pin, or by pairing with a dedicated eFuse like the TPS25982. The device's FAULT output indicates only UV, OV, shutdown, or UVLO conditions - not current faults.
LTC4367IDD-1#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Overvoltage, Undervoltage Protection
- Current - Supply:
- 70µA
- Voltage - Supply:
- 2.5V ~ 60V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (3x3)
LTC4367IDD-1#TRPBF FAQ
1.How can I place an order for LTC4367IDD-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4367IDD-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 LTC4367IDD-1#TRPBF reliable?
The price and inventory of LTC4367IDD-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 LTC4367IDD-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC4367IDD-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4367IDD-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4367IDD-1#TRPBF?
LTC4367IDD-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4367IDD-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 LTC4367IDD-1#TRPBF?
For technical support, including LTC4367IDD-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4367IDD-1#TRPBF requirements.
6.How does Aetrix verify that LTC4367IDD-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC4367IDD-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 LTC4367IDD-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC4367IDD-1#TRPBF?
All LTC4367IDD-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4367IDD-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 LTC4367IDD-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC4367IDD-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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