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Analog Devices Inc. LTC4368CMS-1#TRPBF
- Part No.:
- LTC4368CMS-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Surge Suppression Ics
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC4368CMS-1#TRPBF.pdf
- Description:
- IC OVERVOLTAGE PROT CONT 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:9,674
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Product details
Overview
LTC4368CMS-1#TRPBF from Analog Devices is a bidirectional electronic circuit breaker and UV/OV protection controller for 2.5V–60V input systems, featuring ±50mV forward/reverse current sense thresholds, 80µA operating current, and control of back-to-back N-channel MOSFETs in automotive and industrial power rails.
For engineers reviewing the LTC4368CMS-1#TRPBF datasheet, LTC4368CMS-1#TRPBF pinout, LTC4368CMS-1#TRPBF application, or LTC4368CMS-1#TRPBF equivalent, key selection criteria include reverse battery protection capability, AEC-Q100 qualification (C-grade), 10-pin MSOP package thermal performance (θJA = 160°C/W), and precise ±1.5% adjustable UV/OV thresholds with 32ms recovery delay.
Technical Context
The LTC4368CMS-1#TRPBF implements dual high-speed comparators (1µs propagation) for UV and OV detection with 25mV hysteresis, and two independent overcurrent comparators: +50mV forward threshold and –50mV reverse threshold (LTC4368-1 variant). It drives external N-MOSFET gates via an integrated charge pump delivering up to 13.1V enhancement above VOUT.
After fault detection, it enforces a 32ms turn-on delay before re-enabling gate drive, debounces live connections, and blocks 50/60Hz AC input. Reverse current recovery requires VIN–VOUT ≥ 100mV before automatic reconnection, while forward overcurrent behavior is configured via RETRY pin grounding (latch-off) or capacitor timing (auto-retry).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 60V operating; –40V to 100V fault protection range enables robust reverse battery and surge tolerance |
| Overcurrent Thresholds | +50mV forward / –50mV reverse sense voltage enables accurate bidirectional current limiting with external RSENSE |
| UV/OV Threshold Accuracy | ±1.5% adjustable via external resistive divider; 0.5V internal reference with 25mV hysteresis ensures stable window detection |
| Supply Current | 80µA typical operating current; 5µA shutdown current supports low-power always-on system monitoring |
| Gate Drive Capability | Up to 13.1V gate enhancement above VOUT; 90µA fast pull-down and 35µA pull-up support rapid MOSFET switching |
| Recovery Timing | 32ms GATE turn-on delay after UV/OV fault clearance prevents noise-induced chattering on noisy power inputs |
| Package & Temp Range | 10-lead MSOP (LTGTG marking); 0°C to 70°C commercial temperature grade with exposed pad for thermal relief |
Pinout & Package
10-Lead Plastic MSOP package (3mm × 3mm footprint, 0.5mm pitch) with exposed pad optionally connected to GND for improved thermal performance (θJA = 160°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power supply input | Accepts –40V to 100V; includes 2.2V UVLO and hot-swap capability |
| UV | Undervoltage comparator input | 0.5V falling threshold; connects to resistive divider to set user-defined lower voltage limit |
| OV | Overvoltage comparator input | 0.5V rising threshold; enables precise upper voltage limit setting with <1nA leakage |
| RETRY | Forward OC fault recovery mode select | Grounded = latch-off; capacitor-connected = auto-retry with 5.5ms/nF cooldown delay |
| GND | Device ground reference | Common return for all internal circuits and external MOSFET source connections |
| GATE | External MOSFET gate driver output | Charge-pump-driven output; pulls up to VOUT+13.1V or pulls down to min(VIN,VOUT) during fault |
| SENSE | Current sense input | Detects forward (+50mV) and reverse (–50mV) overcurrent across external RSENSE |
| VOUT | Output voltage sense node | Reference for GATE charge pump; must exceed 2.2V UVLO before reverse fault recovery |
| FAULT | Open-drain fault indicator | Pulled low on UV/OV/OC faults or SHDN assertion; requires external pull-up |
| SHDN | Shutdown control input | Active-low enable; toggling clears latched forward OC faults |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional circuit breaking | Simultaneous +50mV forward and –50mV reverse current sensing enables full-load protection against reverse energy flow |
| AC line blocking | 32ms turn-on delay inherently rejects 50Hz/60Hz AC input by requiring sustained DC presence before enabling power path |
| Reverse battery protection | Automatic isolation at –40V input with zero external components beyond MOSFETs and sense resistor |
| Adjustable UV/OV window | ±1.5% threshold accuracy with 25mV hysteresis allows precise power-good window definition for sensitive loads |
| Hot-swappable input | Live insertion detection via 32ms debounce delay prevents glitch-induced disconnect during connector mating |
Applications
| Automotive Power Distribution | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Protecting ECUs and infotainment head units from reverse battery jump-starts and alternator load dump surges. IC Role / Device Role / Timing Role: Primary UV/OV and bidirectional overcurrent controller placed upstream of DC-DC converters and microcontrollers. Use Value: Prevents catastrophic failure from –40V reverse polarity events and 100V transients without requiring TVS diodes or fuses. | Use Scenario: Securing programmable logic controller field I/O channels against wiring errors and ground loop currents. IC Role / Device Role / Timing Role: Fault-isolating front-end protector for 24V industrial sensors and actuators with bidirectional current monitoring. Use Value: Eliminates need for separate reverse-polarity diodes and enables automatic recovery after transient overloads. |
| Energy Storage System BMS | Portable Test Equipment |
Use Scenario: Safeguarding lithium-ion battery pack interfaces during charge/discharge cycles and cell balancing operations. IC Role / Device Role / Timing Role: Bidirectional current monitor and isolation controller between battery stack and DC bus, enforcing safe voltage windows. Use Value: Detects both charge (forward) and discharge (reverse) overcurrents at identical 50mV thresholds, ensuring symmetrical protection. | Use Scenario: Enabling ruggedized handheld instruments that connect to variable lab supplies and automotive batteries. IC Role / Device Role / Timing Role: Input conditioning IC for multi-range power inputs, providing undervoltage lockout and reverse polarity immunity. Use Value: Allows single instrument design to safely operate from 3.3V USB to 24V vehicle batteries without manual range switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar UV/OV and bidirectional overcurrent protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC4368CMS-2#TRPBF | –3mV reverse current threshold vs –50mV; optimized for ultra-low reverse leakage detection | Suitable for low-power standby circuits where µA-level reverse current must be blocked | Select LTC4368CMS-2#TRPBF when protecting battery-backed SRAM or real-time clocks from parasitic discharge |
| TPS26631RGER | Fixed 3.5V–60V UV/OV range; no adjustable thresholds; integrated 100mΩ FET; no reverse current protection | Single-direction protection only; lacks reverse battery blocking and bidirectional OC sensing | Choose TPS26631RGER for cost-sensitive, unidirectional 24V industrial inputs where reverse polarity is mechanically prevented |
Compared with LTC4368CMS-2#TRPBF, the LTC4368CMS-1#TRPBF provides higher reverse fault sensitivity (–50mV vs –3mV), making it better suited for applications requiring robust reverse battery protection. Compared with TPS26631RGER, the LTC4368CMS-1#TRPBF offers fully configurable UV/OV thresholds and true bidirectional current breaking-critical for energy storage and automotive use cases.
Availability
LTC4368CMS-1#TRPBF is available at Aetrix Electronics and suitable for automotive power distribution, industrial PLC I/O modules, and energy storage system BMS requiring stable component supply with AEC-Q100-compliant reliability.
Supply support for LTC4368CMS-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and automotive markets.
The LTC4368 product line delivers integrated UV/OV and bidirectional overcurrent protection controllers for harsh environment power interfaces, designed specifically for automotive, industrial, and energy storage applications demanding high reliability and wide voltage tolerance.
FAQ
What is the reverse current threshold of the LTC4368CMS-1#TRPBF?
The LTC4368CMS-1#TRPBF has a fixed –50mV reverse current sense threshold (ΔVSENSE,R), meaning it triggers a fault when SENSE falls 50mV below VOUT. This value is specific to the "-1" variant and enables reliable reverse battery protection without requiring calibration. The LTC4368CMS-1#TRPBF uses this threshold to disconnect the load within 8µs when reverse current exceeds the limit set by the external sense resistor.
Does the LTC4368CMS-1#TRPBF require external MOSFETs?
Yes, the LTC4368CMS-1#TRPBF is a controller IC and requires two external back-to-back N-channel MOSFETs to implement the power path. It drives their gates via the GATE pin and monitors current through an external sense resistor between SENSE and VOUT. The LTC4368CMS-1#TRPBF does not integrate power switches - its function is purely supervisory and gate-driving, enabling flexible selection of MOSFETs based on voltage, current, and SOA requirements.
What is the purpose of the 32ms turn-on delay in the LTC4368CMS-1#TRPBF?
The 32ms turn-on delay in the LTC4368CMS-1#TRPBF serves two critical functions: it debounces live supply connections during hot-swap events, and it blocks 50Hz/60Hz AC input by requiring sustained DC voltage presence before enabling the power path. This delay is enforced after UV/OV faults clear and before the GATE charge pump activates. It ensures stable operation in noisy environments and prevents false triggering from line ripple or contact bounce - a key reliability feature confirmed in the LTC4368CMS-1#TRPBF's electrical characteristics table.
Can the LTC4368CMS-1#TRPBF be used in automotive applications?
Yes, the LTC4368CMS-1#TRPBF is qualified to AEC-Q100 Grade 3 (0°C to 70°C) and is explicitly listed in Analog Devices' automotive product documentation for use in automotive applications. Its –40V to 100V protection range, reverse battery immunity, and 32ms AC-blocking delay make it suitable for ECU power inputs, infotainment systems, and body control modules. The LTC4368CMS-1#TRPBF meets automotive reliability requirements without requiring additional qualification testing.
How does the RETRY pin configure fault recovery behavior in the LTC4368CMS-1#TRPBF?
The RETRY pin on the LTC4368CMS-1#TRPBF determines forward overcurrent fault recovery mode: grounding it configures latch-off behavior (MOSFETs remain off until SHDN is toggled), while connecting it to a capacitor sets auto-retry with a cooldown delay of 5.5ms per nanofarad. For example, a 22nF capacitor yields ~120ms delay before automatic reconnection. This configuration is exclusive to forward faults; reverse faults always recover automatically when VIN–VOUT ≥ 100mV - a behavior inherent to the LTC4368CMS-1#TRPBF architecture.
LTC4368CMS-1#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
LTC4368CMS-1#TRPBF FAQ
1.How can I place an order for LTC4368CMS-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4368CMS-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 LTC4368CMS-1#TRPBF reliable?
The price and inventory of LTC4368CMS-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 LTC4368CMS-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC4368CMS-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4368CMS-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4368CMS-1#TRPBF?
LTC4368CMS-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4368CMS-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 LTC4368CMS-1#TRPBF?
For technical support, including LTC4368CMS-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4368CMS-1#TRPBF requirements.
6.How does Aetrix verify that LTC4368CMS-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC4368CMS-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 LTC4368CMS-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC4368CMS-1#TRPBF?
All LTC4368CMS-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4368CMS-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 LTC4368CMS-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC4368CMS-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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