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Analog Devices Inc. LTC4368HMS-1#WPBF
- Part No.:
- LTC4368HMS-1#WPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Surge Suppression Ics
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC4368HMS-1#WPBF.pdf
- Description:
- 100V UV/OV & REVERSE PROT CNTR W
- Quantity:
- Payment:
- Shipping:
Inventory:4,332
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Product details
Overview
LTC4368HMS-1#WPBF from Analog Devices is a high-voltage bidirectional electronic circuit breaker and UV/OV protection controller for back-to-back N-channel MOSFETs. It operates from 2.5V to 60V input, provides ±100V/–40V fault protection, features +50mV forward and –50mV reverse current sense thresholds (LTC4368-1 variant), and delivers 13.1V gate drive enhancement - used in automotive surge protection and industrial energy storage systems.
For engineers reviewing the LTC4368HMS-1#WPBF datasheet, LTC4368HMS-1#WPBF pinout, LTC4368HMS-1#WPBF application, or LTC4368HMS-1#WPBF equivalent, key selection criteria include its –40°C to 125°C AEC-Q100 qualified temperature range, 32ms turn-on delay for AC blocking, 80µA operating current, and MSOP-10 package with exposed pad grounding option.
Technical Context
The LTC4368HMS-1#WPBF implements dual fast comparators (1µs propagation) for UV and OV monitoring with 25mV hysteresis and 0.5V internal reference, enabling precise ±1.5% adjustable thresholds via external resistive dividers. Its bidirectional overcurrent detection uses dedicated forward (+50mV) and reverse (–50mV) sense comparators tied to SENSE–VOUT differential inputs.
Gate control employs an integrated charge pump delivering up to 13.1V enhancement above VOUT, with fast (6µs) and slow (575µs) pull-down paths, 32ms recovery delay after faults, and RETRY-pin configurable auto-retry or latch-off behavior for forward overcurrent events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 60V operating; –40V to 100V fault protection - enables robust operation across automotive battery transients and industrial supply variations. |
| Overcurrent Thresholds | +50mV forward / –50mV reverse (LTC4368-1) - sets precise trip points for bidirectional fault detection using external sense resistor. |
| UV/OV Threshold Accuracy | ±1.5% with 25mV hysteresis - ensures stable window-based power-good validation without chattering during noisy supply transitions. |
| Operating Current | 80µA typical - minimizes quiescent load on battery-backed or low-power systems. |
| Gate Drive Enhancement | Up to 13.1V above VOUT - fully enhances standard N-channel MOSFETs even at low VIN (e.g., 2.5V), eliminating need for P-channel or level-shifted drivers. |
| Turn-On Delay | 32ms - debounces live hot-swap connections and blocks 50Hz/60Hz AC line interference before enabling power path. |
| Temperature Range | –40°C to +125°C - qualified per AEC-Q100 Grade H for under-hood automotive and harsh industrial environments. |
Pinout & Package
Package: 10-Lead Plastic MSOP with exposed pad (LTGTG marking); RoHS-compliant, lead-free finish; thermal resistance θJA = 160°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power supply input | Accepts –40V to 100V; includes 2.2V UVLO; supports hot-swap and reverse polarity tolerance. |
| UV | Undervoltage comparator input | 0.5V falling threshold with 25mV hysteresis; connects to resistive divider for user-defined lower voltage limit. |
| OV | Overvoltage comparator input | 0.5V rising threshold with 25mV hysteresis; enables precise upper voltage limit setting. |
| RETRY | Forward OC retry/latch control | GND = latch-off; capacitor = auto-retry delay (e.g., 22nF → ~120ms cooldown); defines fault recovery behavior. |
| SHDN | Shutdown enable input | Active-high; <0.75V disables GATE drive and reduces current to 5µA; required to reset latched faults. |
| GATE | MOSFET gate driver output | Charge-pump driven; pulls up to VOUT +13.1V; fast/slow pull-down paths ensure controlled MOSFET turn-off. |
| SENSE | Current sense differential input | Monitors SENSE–VOUT; triggers +50mV (forward) or –50mV (reverse) OC fault; requires external sense resistor. |
| VOUT | Output voltage sense reference | Reference for GATE charge pump; must rise >2.2V UVLO before reverse fault recovery; connects to load side of sense resistor. |
| FAULT | Open-drain fault indicator | Pulled low on UV/OV/OC/SHDN assert; requires external pull-up; signals all protection events. |
| GND | Device ground | Reference for all internal circuits; exposed pad may be connected to PCB ground for thermal and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional overcurrent protection | Separate +50mV forward and –50mV reverse sense thresholds enable full-load protection against both supply-to-load and load-to-supply fault currents. |
| AC power blocking | 32ms turn-on delay prevents 50Hz/60Hz AC line voltages from energizing the load - eliminates need for external rectification or filtering. |
| Reverse battery protection | Automatic isolation when VIN < 0V down to –40V; GATE ties to VIN during negative input, ensuring MOSFET body diodes remain reverse-biased. |
| Adjustable UV/OV window | External resistor dividers set precise thresholds with ±1.5% accuracy and 25mV hysteresis - supports custom power-good windows for diverse loads. |
| AEC-Q100 Grade H qualification | Validated for –40°C to +125°C operation with automotive reliability testing - suitable for engine control, ADAS, and battery management systems. |
Applications
| Automotive Battery Protection | Industrial Energy Storage Systems |
|---|---|
Use Scenario: Prevents damage from reverse battery installation or jump-start polarity errors in 12V/24V vehicle electronics. IC Role / Device Role / Timing Role: Controls back-to-back N-MOSFETs to block reverse current flow and disconnect load within 8µs of –50mV SENSE–VOUT detection. Use Value: Eliminates need for bulky series diodes or P-MOSFETs while maintaining <10mΩ total RDS(on) path loss. | Use Scenario: Safeguards lithium-ion battery packs during charge/discharge cycles where bidirectional current and voltage transients occur. IC Role / Device Role / Timing Role: Monitors VOUT–SENSE for reverse overcurrent (e.g., cell imbalance discharge) and enforces 100mV VIN–VOUT re-enable threshold before reconnecting. Use Value: Enables true bidirectional current limiting without separate forward/reverse protection ICs - reduces BOM count and PCB area. |
| Portable Instrumentation Power Input | Harsh-Environment Industrial Controllers |
Use Scenario: Protects handheld test equipment from accidental connection to overvoltage wall adapters or miswired lab supplies. IC Role / Device Role / Timing Role: Uses UV/OV comparators with 32ms debounce to reject noisy or unstable inputs before enabling power path to sensitive analog front-ends. Use Value: Prevents latch-up or permanent damage to precision ADCs and op-amps by enforcing strict 7V–36V valid window (per typical app). | Use Scenario: Secures PLC I/O modules exposed to lightning-induced surges and load-dump transients in factory automation. IC Role / Device Role / Timing Role: Withstands –40V to +100V fault conditions while maintaining 5µA shutdown current and 125°C operational capability. Use Value: Replaces discrete TVS + fuse + controller solutions with single-chip protection that survives repeated 100V transients without degradation. |
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 |
|---|---|---|---|
| LTC4368HDD-1#WPBF | Same functionality and specs; 3mm × 3mm DFN package instead of MSOP-10. | Lower θJA (43°C/W vs 160°C/W); better thermal performance in high-power or compact layouts. | Select when board space allows DFN and thermal dissipation is critical; same pinout but different footprint. |
| TPS26631RHFR | Single-direction (forward-only) protection; 60V abs max; no reverse voltage or reverse current protection. | Lacks –40V reverse input rating and –50mV reverse OC detection; not suitable for bidirectional energy storage or reverse battery use cases. | Choose only for cost-sensitive forward-only applications where reverse faults are physically impossible. |
Compared with LTC4368HMS-1#WPBF, the LTC4368HDD-1#WPBF offers identical electrical behavior in a thermally superior DFN package, while the TPS26631RHFR sacrifices reverse protection capability for lower system cost and smaller solution size in unidirectional systems.
Availability
LTC4368HMS-1#WPBF is available at Aetrix Electronics and suitable for automotive battery management, industrial energy storage, and portable instrumentation requiring stable component supply across extended temperature ranges.
Supply support for LTC4368HMS-1#WPBF 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 industrial, automotive, communications, and healthcare markets.
The LTC4368 product line delivers integrated high-voltage protection controllers for back-to-back N-MOSFET configurations, designed specifically for automotive-grade bidirectional power path management with ultra-low quiescent current and precise fault thresholds.
FAQ
What is the reverse overcurrent threshold for LTC4368HMS-1#WPBF?
The LTC4368HMS-1#WPBF uses the LTC4368-1 variant configuration, which specifies a –50mV reverse overcurrent threshold (SENSE – VOUT). This value is fixed per device variant and enables precise detection of reverse current faults such as battery backfeed or regenerative energy flow in energy storage systems. The LTC4368HMS-1#WPBF does not support the –3mV threshold option found in LTC4368-2 variants.
Does LTC4368HMS-1#WPBF support hot-swap operation?
Yes, LTC4368HMS-1#WPBF supports hot-swap operation on the VIN pin, including live insertion into powered systems. Its 32ms turn-on delay debounces mechanical contact bounce and filters line noise, while the internal charge pump ensures reliable gate drive even during transient input conditions. However, VOUT must not be hot-swapped with supplies exceeding 24V due to internal UVLO constraints.
How does the RETRY pin function on LTC4368HMS-1#WPBF?
On LTC4368HMS-1#WPBF, the RETRY pin configures forward overcurrent recovery behavior: grounding RETRY forces latch-off (requires SHDN toggle to reset), while connecting a capacitor (e.g., 22nF) sets auto-retry with ~120ms cooldown. The pin draws negligible current (<2µA) and has a 1V threshold; its state is sampled at fault clearance to determine next action - no software or external logic needed.
What is the maximum gate drive voltage provided by LTC4368HMS-1#WPBF?
LTC4368HMS-1#WPBF provides up to 13.1V of gate drive enhancement above VOUT (ΔVGATE), measured at VIN ≥12V with –1µA load. This enables full enhancement of standard N-channel MOSFETs with VGS(th) up to 4V, even at minimum 2.5V input. Gate drive scales with VIN: 4V at 2.5V VIN, 8.7V at 5V VIN, ensuring robust switching across the full 2.5V–60V operating range.
Is LTC4368HMS-1#WPBF qualified for automotive applications?
Yes, LTC4368HMS-1#WPBF is AEC-Q100 qualified for automotive applications (Grade H, –40°C to +125°C ambient), with controlled manufacturing and reliability testing per automotive standards. The "W" suffix in #WPBF denotes automotive-grade packaging and traceability; it is approved for use in engine control units, battery management systems, and ADAS modules where extended temperature operation and long-term reliability are mandatory.
LTC4368HMS-1#WPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Voltage - Clamping:
- Adjustable
- Technology:
- External Switch
- Number of Circuits:
- 1
- Applications:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
LTC4368HMS-1#WPBF FAQ
1.How can I place an order for LTC4368HMS-1#WPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4368HMS-1#WPBF 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 LTC4368HMS-1#WPBF reliable?
The price and inventory of LTC4368HMS-1#WPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC4368HMS-1#WPBF is usually 5 days.
3.What payment methods are accepted for LTC4368HMS-1#WPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4368HMS-1#WPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4368HMS-1#WPBF?
LTC4368HMS-1#WPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4368HMS-1#WPBF 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 LTC4368HMS-1#WPBF?
For technical support, including LTC4368HMS-1#WPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4368HMS-1#WPBF requirements.
6.How does Aetrix verify that LTC4368HMS-1#WPBF is sourced from the original manufacturer or authorized distributors?
All LTC4368HMS-1#WPBF 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 LTC4368HMS-1#WPBF meets industry standards.
7.What is the process for return or replacement of LTC4368HMS-1#WPBF?
All LTC4368HMS-1#WPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4368HMS-1#WPBF, 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 LTC4368HMS-1#WPBF part is unused and in its original packaging.
Return procedure for LTC4368HMS-1#WPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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