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Analog Devices Inc. LTC4368IMS-2#TRPBF
- Part No.:
- LTC4368IMS-2#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Surge Suppression Ics
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC4368IMS-2#TRPBF.pdf
- Description:
- IC OVERVOLTAGE PROT CONT 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,966
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Product details
Overview
LTC4368IMS-2#TRPBF from Analog Devices is a bidirectional electronic circuit breaker and UV/OV protection controller for 2.5V–60V input systems, featuring ±1.5% adjustable undervoltage/overvoltage thresholds, –3mV reverse current sense threshold, 80µA operating current, and control of back-to-back N-channel MOSFETs in automotive and industrial power rails.
For engineers reviewing the LTC4368IMS-2#TRPBF datasheet, LTC4368IMS-2#TRPBF pinout, LTC4368IMS-2#TRPBF application, or LTC4368IMS-2#TRPBF equivalent, key selection criteria include reverse current fault sensitivity (–3mV), 32ms UV/OV recovery delay, MSOP-10 package with –40°C to +85°C rating, AEC-Q100 qualification, and compatibility with external N-MOSFET gate drive up to 13.1V enhancement.
Technical Context
The LTC4368IMS-2#TRPBF integrates dual high-accuracy comparators (UV/OV) with 25mV hysteresis and fast 1µs propagation, plus forward/reverse overcurrent comparators-forward at +50mV and reverse at –3mV across the SENSE–VOUT differential-enabling bidirectional fault detection in both supply-to-load and load-to-supply directions.
It implements a charge-pump-based gate driver delivering up to 13.1V gate enhancement above VOUT, with fast (6µs) and slow (575µs) pull-down paths, 32ms turn-on debounce to block 50/60Hz AC, and configurable forward overcurrent auto-retry via RETRY pin capacitor timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 60V operating; –40V to 100V fault protection range - supports wide-input DC supplies and robust surge immunity. |
| Reverse Current Threshold | –3mV (SENSE–VOUT) - enables ultra-sensitive reverse current detection for low-voltage battery backup or energy storage reversal. |
| UV/OV Threshold Accuracy | ±1.5% - allows precise, resistor-divider-programmable voltage windows (e.g., 7V–36V) without calibration. |
| Operating Current | 80µA - minimizes quiescent loss in always-on automotive or industrial monitoring circuits. |
| Gate Drive Enhancement | Up to 13.1V above VOUT - ensures full enhancement of standard logic-level N-MOSFETs even at low VIN (≥2.5V). |
| Recovery Delay | 32ms after UV/OV fault clearance - debounces noisy inputs and prevents chattering during line transients. |
| Package & Temp Range | 10-Lead Plastic MSOP; –40°C to +85°C - qualified for extended-temperature industrial and automotive under-hood applications. |
Pinout & Package
Package: 10-Lead Plastic MSOP (LTGTJ marking), exposed pad optional for thermal relief or grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power Supply Input | Main input rail connection; supports hot-swap, –40V to 100V fault tolerance, 2.2V UVLO. |
| UV | Undervoltage Comparator Input | Connects to resistive divider; 0.5V falling threshold with 25mV hysteresis for precise low-voltage cutoff. |
| OV | Overvoltage Comparator Input | Connects to resistive divider; 0.5V rising threshold with 25mV hysteresis for precise overvoltage shutdown. |
| RETRY | Forward OC Recovery Mode Select | Grounded = latch-off; capacitor-connected = auto-retry with 5.5ms/nF cooldown (e.g., 22nF → ~120ms). |
| GND | Device Ground Reference | Primary ground return for internal circuitry and comparator references. |
| GATE | External MOSFET Gate Driver Output | Charge-pump output driving back-to-back N-MOSFET gates; pulls down via 60mA sink on fault. |
| SENSE | Current Sense Input | Differential input referenced to VOUT; detects +50mV (forward) or –3mV (reverse) across RSENSE. |
| VOUT | Output Voltage Sense / Charge Pump Reference | Sense node for reverse current comparison; reference for GATE charge pump when VOUT > ~5V. |
| FAULT | Open-Drain Fault Indicator | Pulled low on UV/OV/OC faults or SHDN low; requires external pull-up for system fault signaling. |
| SHDN | Shutdown Control Input | Active-low enable; toggling clears latched forward OC faults; draws only 5µA in shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Overcurrent Protection | +50mV forward / –3mV reverse sensing enables precise current limiting in both supply-to-load and regenerative load-to-supply modes. |
| Programmable UV/OV Window | ±1.5% accuracy with external resistor dividers allows custom power-good windows (e.g., 7V–36V) without trimming. |
| AC Power Blocking | 32ms turn-on delay inherently blocks 50Hz/60Hz AC input, eliminating need for external rectification or filtering. |
| AEC-Q100 Qualified | Rated for –40°C to +85°C operation with automotive-grade reliability testing - suitable for engine control, ADAS, and infotainment power rails. |
| Low-Power Operation | 80µA active current and 5µA shutdown current extend battery life in portable instrumentation and always-on monitoring systems. |
Applications
| Automotive Power Rail Protection | Industrial Energy Storage Interface |
|---|---|
|
Use Scenario: Protecting ECUs and telematics modules from reverse battery connection, jump-start surges (up to 100V), and load-dump transients in 12V/24V vehicle systems. IC Role / Device Role / Timing Role: UV/OV and bidirectional circuit breaker controller that isolates downstream electronics within microseconds of fault detection. Use Value: Prevents catastrophic MOSFET failure and PCB damage by enforcing strict –40V to 100V input tolerance and enabling use of cost-effective N-channel MOSFETs. |
Use Scenario: Safeguarding lithium-ion battery management systems during charge/discharge cycles where reverse current may occur due to cell imbalance or BMS fault. IC Role / Device Role / Timing Role: Reverse-current detector with –3mV threshold and automatic re-enable when VOUT falls 100mV below VIN. Use Value: Enables safe, self-resetting protection against regenerative currents without manual intervention or system reset. |
| Portable Instrumentation Power Path | Hot-Swappable Industrial Backplane |
|
Use Scenario: Managing dual-input power (battery + wall adapter) in handheld test equipment, ensuring polarity-agnostic connection and inrush control. IC Role / Device Role / Timing Role: Bidirectional gate driver with programmable UV/OV window and 32ms debounce to prevent false triggering during plug insertion. Use Value: Eliminates need for diode-ORing or mechanical polarity switches while supporting seamless source handover. |
Use Scenario: Enabling safe insertion/removal of daughter cards in modular PLC or I/O chassis powered from centralized 24V/48V rails. IC Role / Device Role / Timing Role: Hot-swap controller with latch-off or auto-retry overcurrent response and open-drain FAULT signaling to host supervisor. Use Value: Guarantees zero-downtime maintenance and prevents bus collapse during card insertion-induced inrush or short-circuit events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional overvoltage/overcurrent protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC4368IMS-1#TRPBF | Reverse current threshold is –50mV instead of –3mV; otherwise identical pinout, specs, and package. | Suitable for higher-threshold reverse protection (e.g., avoiding nuisance trips in noisy industrial environments). | Select LTC4368IMS-1#TRPBF when reverse fault sensitivity must be reduced to avoid false triggers from measurement noise or transient spikes. |
| TPS26631RGER | Single-direction (forward-only) protection IC; no reverse current sensing; fixed 3.2V–60V operating range; integrated FET. | Designed for simpler, lower-cost forward-only hot-swap applications without regenerative or reverse-battery requirements. | Choose TPS26631RGER only if reverse current protection is unnecessary and board space savings from integrated FET outweigh flexibility of external MOSFET selection. |
Compared with LTC4368IMS-1#TRPBF, the LTC4368IMS-2#TRPBF provides 16.7× finer reverse current resolution (–3mV vs –50mV), enabling reliable protection in low-voltage energy harvesting or battery backup systems; versus TPS26631RGER, it offers full bidirectionality and external MOSFET optimization at the cost of added layout complexity.
Availability
LTC4368IMS-2#TRPBF is available at Aetrix Electronics and suitable for automotive ECU protection, industrial energy storage interfaces, portable instrumentation power path management, and hot-swappable backplane designs requiring stable component supply across extended temperature ranges.
Supply support for LTC4368IMS-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 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 LTC4368 product line delivers robust, programmable overvoltage, undervoltage, and bidirectional overcurrent protection for mission-critical power rails - designed specifically for automotive, industrial, and portable systems demanding high reliability and wide input tolerance.
FAQ
What is the reverse current sense threshold of the LTC4368IMS-2#TRPBF?
The LTC4368IMS-2#TRPBF has a reverse current sense threshold of –3mV (SENSE–VOUT), enabling highly sensitive detection of reverse current flow - critical for battery backup, energy storage, and regenerative load applications where even small reverse currents must be blocked promptly.
How does the LTC4368IMS-2#TRPBF handle overvoltage and undervoltage faults?
The LTC4368IMS-2#TRPBF uses two independent, high-accuracy comparators (UV and OV pins) with ±1.5% threshold accuracy and 25mV hysteresis. When VIN exceeds the OV threshold or drops below the UV threshold, it asserts FAULT low and discharges the GATE pin via a 60mA sink within 2µs, disconnecting the load. Recovery requires VIN to remain within the window for 32ms before re-enabling.
Can the LTC4368IMS-2#TRPBF be used in automotive applications?
Yes - the LTC4368IMS-2#TRPBF is AEC-Q100 qualified for operation from –40°C to +85°C and features robust –40V to 100V input fault tolerance, making it suitable for automotive power rail protection in ECUs, infotainment, ADAS, and body control modules where reverse battery, load dump, and jump-start surges are common.
What package and thermal characteristics does the LTC4368IMS-2#TRPBF have?
The LTC4368IMS-2#TRPBF is housed in a 10-Lead Plastic MSOP (LTGTJ marking) with θJA = 160°C/W. Its exposed pad is optional for grounding or thermal relief. The device operates from –40°C to +85°C ambient and supports junction temperatures up to 150°C, enabling use in thermally constrained automotive and industrial enclosures.
How is forward overcurrent recovery configured on the LTC4368IMS-2#TRPBF?
Forward overcurrent recovery on the LTC4368IMS-2#TRPBF is set via the RETRY pin: grounding RETRY forces latch-off until SHDN is toggled; connecting a capacitor (e.g., 22nF) configures auto-retry with a cooldown delay of ~120ms (5.5ms/nF). This allows controlled reconnection after transient overloads without manual reset.
LTC4368IMS-2#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Clamping:
- Adjustable
- Technology:
- External Switch
- Number of Circuits:
- 1
- Applications:
- -
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
LTC4368IMS-2#TRPBF FAQ
1.How can I place an order for LTC4368IMS-2#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4368IMS-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 LTC4368IMS-2#TRPBF reliable?
The price and inventory of LTC4368IMS-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 LTC4368IMS-2#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC4368IMS-2#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4368IMS-2#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4368IMS-2#TRPBF?
LTC4368IMS-2#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4368IMS-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 LTC4368IMS-2#TRPBF?
For technical support, including LTC4368IMS-2#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4368IMS-2#TRPBF requirements.
6.How does Aetrix verify that LTC4368IMS-2#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC4368IMS-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 LTC4368IMS-2#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC4368IMS-2#TRPBF?
All LTC4368IMS-2#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4368IMS-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 LTC4368IMS-2#TRPBF part is unused and in its original packaging.
Return procedure for LTC4368IMS-2#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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