My Inquiry
My Account
Analog Devices Inc. LTC4367IDD#TRPBF
- Part No.:
- LTC4367IDD#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Power Management - Specialized
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC4367IDD#TRPBF.pdf
- Description:
- SUPPLY PROTECTION CONTROLLER
- Quantity:
- Payment:
- Shipping:
Inventory:4,878
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC4367IDD#TRPBF from Analog Devices is a high-voltage, precision input protection controller that manages back-to-back N-channel MOSFETs to safeguard downstream loads against overvoltage (up to +100V), undervoltage (down to 2.5V), and reverse supply (–40V). It features adjustable UV/OV thresholds, 70µA operating current, 32ms fault recovery delay, and operates in –40°C to +85°C ambient. Used in automotive load-dump protection circuits with 24V nominal supplies.
For engineers reviewing the LTC4367IDD#TRPBF datasheet, LTC4367IDD#TRPBF pinout, LTC4367IDD#TRPBF application, or LTC4367IDD#TRPBF equivalent, key selection criteria include its ±40V to +100V input protection range, dual comparator-based window monitoring, gate drive referenced to VOUT, DFN-8 package thermal performance, and compatibility with standard N-channel power MOSFETs such as Si7942.
Technical Context
The LTC4367IDD#TRPBF implements independent, fast (1µs propagation) UV and OV comparators with 25mV hysteresis and 500mV internal reference, enabling precise user-defined voltage windows via external resistive dividers. Its charge pump generates gate drive up to ΔVGATE = 13.1V (referenced to VOUT) to fully enhance external N-MOSFETs across 2.5V–60V operating input range.
Reverse protection is achieved by detecting negative VIN and internally connecting GATE to VIN, forcing M2 off while leveraging body diode blocking. The device integrates a 32ms turn-on delay timer to debounce AC line noise (50/60Hz) and prevent chatter, with FAULT output signaling UV/OV faults or shutdown state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Protection Range | –40V to +100V: withstands automotive load dump transients and reverse battery connection without external TVS or capacitor. |
| Operating Voltage Range | 2.5V to 60V: supports wide-input industrial and automotive systems including 12V/24V/48V rails. |
| UV/OV Threshold Accuracy | ±1.5% at 25°C (500mV ref ±7.5mV): enables stable 3.5V–18V or similar custom windows using 1% resistors. |
| Quiescent Current | 70µA typical: minimizes standby power loss in always-on vehicle modules and portable instrumentation. |
| GATE Drive Capability | Up to 13.1V enhancement above VOUT: ensures full enhancement of N-MOSFETs like Si7942 even at low VIN (≥2.5V). |
| Fault Recovery Delay | 32ms (LTC4367); blocks 50/60Hz AC power and filters transient noise before re-enabling load connection. |
| Package & Temp Grade | 3mm × 3mm DFN-8, –40°C to +85°C: suitable for space-constrained automotive ECUs and industrial controllers. |
Pinout & Package
Package: 8-lead (3mm × 3mm) plastic DFN with exposed pad (optional ground connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | High-voltage input supply rail | Withstands –40V to +100V; powers internal circuitry when ≥2.5V; connects to external N-MOSFET source. |
| UV | Undervoltage comparator input | Monitors VIN via resistive divider; triggers fault if voltage falls below user-set threshold (e.g., 3.5V). |
| OV | Overvoltage comparator input | Monitors VIN via resistive divider; triggers fault if voltage exceeds user-set threshold (e.g., 18V). |
| GND | Device ground reference | Common return for internal regulators, comparators, and logic; exposed pad may be grounded for thermal relief. |
| GATE | Gate drive output | Charge-pump-driven output referenced to VOUT; pulls up to VOUT + 13.1V or tracks VIN during reverse events. |
| VOUT | Output voltage sense | Senses voltage at load side of MOSFETs; serves as charge pump reference and reverse protection reference point. |
| FAULT | Open-drain fault indicator | Pulled low during UV/OV fault, shutdown, or VIN < UVLO; drives external LED or microcontroller interrupt. |
| SHDN | Shutdown control input | Active-low enable: disables GATE drive and reduces current to 5µA; allows system-level power sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Back-to-back N-MOSFET control | Enables low RDS(on) solution vs. P-MOSFET or diode-based protection; supports Si7942, Si4946, and other industry-standard dual N-MOSFETs. |
| No input capacitor or TVS required | Internal robustness eliminates need for external surge suppression components in most 24V automotive and industrial applications. |
| Reverse supply protection | Automatically disconnects load from –40V inputs by shorting GATE to VIN, preventing reverse current flow through M2 body diode. |
| Adjustable UV/OV thresholds | Configurable via two external resistor dividers; supports custom windows (e.g., 7V–36V) without changing IC. |
| Low-power operation | 70µA operating current and 5µA shutdown current extend battery life in portable and always-on systems. |
Applications
| Automotive Load Dump Protection | Industrial Power Input Conditioning |
|---|---|
Use Scenario: Protecting engine control units (ECUs) and infotainment modules from ISO 7637-2 Pulse 5a/b transients reaching +100V during alternator load dump. IC Role / Device Role / Timing Role: Input fault protection controller that isolates load within microseconds of overvoltage detection and enforces 32ms recovery before reconnecting. Use Value: Eliminates need for high-voltage TVS diodes and reduces BOM cost while maintaining compliance with automotive EMC standards. | Use Scenario: Securing programmable logic controllers (PLCs) and sensor interfaces powered from unregulated 24V DC supplies subject to brownouts and polarity reversal. IC Role / Device Role / Timing Role: Precision window monitor controlling external N-MOSFETs to enforce 3.5V–18V safe operating window and block reverse connections. Use Value: Prevents field failures due to miswired power cables or depleted backup batteries, improving system uptime and reducing service calls. |
| Portable Instrumentation Power Management | Network Equipment DC Input Protection |
Use Scenario: Enabling multi-source power (AC adapter, Li-ion battery, USB PD) in handheld test equipment with strict polarity and voltage integrity requirements. IC Role / Device Role / Timing Role: Dual-supply selector and fault protector that uses SHDN to coordinate between sources and FAULT to signal invalid input conditions. Use Value: Supports hot-swap capability and prevents damage from accidental reverse battery insertion or overvoltage adapters. | Use Scenario: Safeguarding PoE-powered switches, routers, and base station radios connected to centralized 48V DC plant power with risk of undervoltage or wiring faults. IC Role / Device Role / Timing Role: High-reliability input supervisor ensuring only valid 36V–57V PoE-compatible inputs power the system; rejects out-of-spec sources. Use Value: Increases mean time between failures (MTBF) by eliminating latch-up and latch-down events caused by marginal input voltages. |
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-1#TRPBF | 500µs fault recovery delay vs. 32ms; identical pinout, specs, and package; same temperature grade (–40°C to +85°C). | Required where rapid reconnection after transient faults is critical (e.g., real-time control loops, servo drives). | Select LTC4367IDD-1#TRPBF only when sub-millisecond recovery is mandatory; otherwise LTC4367IDD#TRPBF provides superior noise immunity. |
| TPS26631RGER | Integrated 60V eFuse with current limiting; no adjustable UV/OV window; fixed 2.5V UVLO; no reverse protection; 16-pin WQFN. | Suitable for overcurrent + basic UV protection only; not viable for –40V reverse or custom voltage windows. | Choose TPS26631RGER for cost-sensitive, current-limited applications without reverse or precise window needs; avoid for automotive load dump or bidirectional protection. |
Compared with LTC4367IDD-1#TRPBF and TPS26631RGER, the LTC4367IDD#TRPBF uniquely delivers field-configurable ±40V to +100V protection with true reverse blocking, making it the only option for robust automotive and industrial input conditioning where voltage window accuracy and polarity integrity are non-negotiable.
Availability
LTC4367IDD#TRPBF is available at Aetrix Electronics and suitable for automotive load dump protection, industrial PLC power inputs, and portable instrumentation requiring stable component supply across extended temperature ranges.
Supply support for LTC4367IDD#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 (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and power management semiconductors, serving aerospace, automotive, industrial, and communications markets.
The LTC4367 series was designed specifically for high-reliability input protection in harsh environments-enabling compact, efficient, and maintenance-free power path control in automotive ECUs, industrial controllers, and network infrastructure equipment.
FAQ
What is the maximum input voltage the LTC4367IDD#TRPBF can withstand without damage?
The LTC4367IDD#TRPBF has an absolute maximum rating of –40V to +100V on the VIN pin. This means it can survive automotive load dump transients up to +100V and reverse battery connections down to –40V without damage, provided external MOSFETs and layout meet recommended practices. Its normal operating range remains 2.5V to 60V.
Does the LTC4367IDD#TRPBF require external TVS diodes or input capacitors?
No, the LTC4367IDD#TRPBF does not require external TVS diodes or input capacitors for most applications. Its internal architecture withstands –40V to +100V transients and filters 50/60Hz AC power via its 32ms turn-on delay. External components are only needed for extreme ESD or system-level surge compliance beyond the IC's intrinsic ratings.
How does the LTC4367IDD#TRPBF provide reverse supply protection?
The LTC4367IDD#TRPBF detects negative VIN and automatically connects the GATE pin to VIN, pulling the gate of the downstream N-MOSFET (M2) to the negative rail. This keeps M2 off while allowing the upstream MOSFET's (M1) body diode to conduct only toward VIN-blocking reverse current flow to VOUT. No external diodes or P-MOSFETs are required.
Can the UV and OV thresholds of the LTC4367IDD#TRPBF be adjusted independently?
Yes, the LTC4367IDD#TRPBF provides two independent comparator inputs-UV and OV-that accept separate resistive dividers from VIN. Each uses a precise 500mV internal reference with 25mV hysteresis, enabling fully independent adjustment of undervoltage (e.g., 3.5V) and overvoltage (e.g., 36V) trip points without shared components or calibration.
What is the purpose of the 32ms GATE turn-on delay in the LTC4367IDD#TRPBF?
The 32ms GATE turn-on delay in the LTC4367IDD#TRPBF debounces noisy input conditions-including 50Hz/60Hz AC ripple and fast transients-preventing chattering of the protected load. It ensures the input voltage remains stably within the user-defined UV/OV window for at least 32ms before enabling the external MOSFETs, enhancing system reliability in electrically harsh environments.
LTC4367IDD#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#TRPBF FAQ
1.How can I place an order for LTC4367IDD#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4367IDD#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#TRPBF reliable?
The price and inventory of LTC4367IDD#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#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC4367IDD#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4367IDD#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4367IDD#TRPBF?
LTC4367IDD#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4367IDD#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#TRPBF?
For technical support, including LTC4367IDD#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4367IDD#TRPBF requirements.
6.How does Aetrix verify that LTC4367IDD#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC4367IDD#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#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC4367IDD#TRPBF?
All LTC4367IDD#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4367IDD#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#TRPBF part is unused and in its original packaging.
Return procedure for LTC4367IDD#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC4367IDD#TRPBF Tags
-
TPS2511DGNR
Texas Instruments
-
UTC2000/MG
Microchip Technology
-
TUSB320HAIRWBR
Texas Instruments
-
TPS61252DSGR
Texas Instruments
-
PI5USB30216CXUAEX
Diodes Incorporated
-
SN6501DBVR
Texas Instruments
-
CYPD3177-24LQXQT
Infineon Technologies
-
SN6501QDBVRQ1
Texas Instruments
-
STUSB1600AQTR
STMicroelectronics
-
SN6505BDBVR
Texas Instruments
-
SN6501DBVT
Texas Instruments
-
TPS65150PWPR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
