My Inquiry
My Account
Analog Devices Inc. LTC4367IDD-1#PBF
- Part No.:
- LTC4367IDD-1#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Power Management - Specialized
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC4367IDD-1#PBF.pdf
- Description:
- SUPPLY PROTECTION CONTROLLER
- Quantity:
- Payment:
- Shipping:
Inventory:2,531
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC4367IDD-1#PBF from Analog Devices is a high-voltage overvoltage, undervoltage, and reverse supply protection controller for 2.5V–60V 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, and operates with only 70µA quiescent current. It is used in automotive load-dump protection circuits where rapid fault clearance and robust input tolerance are required.
For engineers reviewing the LTC4367IDD-1#PBF datasheet, LTC4367IDD-1#PBF pinout, LTC4367IDD-1#PBF application, or LTC4367IDD-1#PBF equivalent, key selection criteria include its –40V to 100V input protection range, adjustable UV/OV thresholds via resistive dividers, GATE drive referenced to VOUT, 8-pin DFN package, and fast 500µs turn-on delay after fault clearance.
Technical Context
The LTC4367IDD-1#PBF implements dual precision comparators (UV and OV) with 0.5V internal reference, 25mV hysteresis, and <2µs fault propagation delay. Its gate driver uses an internal charge pump to deliver up to 13.1V enhancement above VOUT, enabling low-RDS(on) N-channel MOSFETs without external biasing.
It integrates reverse-voltage detection that actively pulls GATE to VIN when VIN goes negative, ensuring M2 remains off during –40V transients. The device enters 5µA shutdown mode when SHDN is low and supports hot-swap operation with controlled GATE slew rate via internal slow-pull-down current (90µA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Protection Range | –40V to +100V - withstands automotive load dump and reverse battery connection without external TVS or capacitor. |
| Operating Voltage Range | 2.5V to 60V - powers from low-voltage industrial rails up to 48V telecom supplies. |
| GATE Turn-On Delay (tD(ON)) | 500µs (typ.) - enables fast reconnection after transient overvoltage/undervoltage events, critical for real-time power continuity. |
| Quiescent Current (IVIN) | 70µA (max) - minimizes standby power loss in always-on automotive and industrial modules. |
| UV/OV Threshold Accuracy | ±1.5% (0.4925V–0.5075V) - ensures precise 3.5V–18V or other user-defined input windows using standard 1% resistors. |
| FAULT Output Type | High-voltage open-drain - sinks ≥500µA at 0.4V, compatible with 3.3V/5V/12V logic monitoring without level shifters. |
| Shutdown Current | 5µA (max) - allows deep sleep in battery-backed systems while retaining fault detection capability. |
Pinout & Package
Package: 8-lead (3mm × 3mm) plastic DFN with exposed pad (optional ground connection). RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | High-voltage input supply rail | Withstands –40V to +100V; powers internal circuitry and serves as reference for reverse protection logic. |
| UV | Undervoltage comparator input | Accepts resistive divider to set falling-threshold trip point (0.5V ref); <10nA leakage enables high-impedance dividers. |
| OV | Overvoltage comparator input | Accepts resistive divider to set rising-threshold trip point (0.5V ref); clamped to ≤5V to prevent damage. |
| GND | Device ground reference | Return path for internal regulators, comparators, and FAULT output; connects to exposed pad for thermal performance. |
| GATE | Gate drive output | Charge-pump-driven output referenced to VOUT; delivers up to 13.1V enhancement to drive N-MOSFET gates. |
| VOUT | Output voltage sense | Senses load-side voltage; used as charge pump return and determines GATE–VOUT drive magnitude. |
| FAULT | Fault status indicator | Open-drain output pulled low on UV/OV fault, SHDN assertion, or VIN < UVLO (1.8V–2.4V). |
| SHDN | Shutdown control input | Active-low enable; places device in 5µA shutdown and initiates controlled GATE discharge via 90µA sink. |
Key Features
| Feature | Design Value |
|---|---|
| Fast 500µs fault recovery | Enables sub-millisecond reconnection after transient overvoltage (e.g., ISO 7637-2 pulse 1/5a), reducing system downtime in automotive ECUs. |
| No input capacitor or TVS required | Integrated 100V-rated input stage eliminates need for external surge suppression components in most 24V/48V applications. |
| Reverse supply blocking to –40V | Internal switch connects GATE to negative VIN, forcing M2 body diode into reverse blocking - no external P-channel or diode needed. |
| Adjustable UV/OV thresholds | Configurable via two external resistors per threshold; supports custom windows (e.g., 9V–16V for 12V automotive) with ±1.5% accuracy. |
| Controlled GATE slew during shutdown | 90µA slow-pull-down current limits dV/dt across MOSFETs, suppressing inductive voltage spikes in high-current loads. |
Applications
| Automotive Load Dump Protection | Industrial 48V DC Power Distribution |
|---|---|
Use Scenario: Protecting engine control units (ECUs) and ADAS sensors from ISO 7637-2 load dump pulses reaching +100V during alternator regulation failure. IC Role / Device Role / Timing Role: Input fault monitor and gate controller for dual N-MOSFETs; asserts FAULT within 2µs and disables GATE in <6µs upon overvoltage detection. Use Value: Eliminates need for 100V+ TVS diodes and reduces BOM cost by >30% versus discrete protection solutions. | Use Scenario: Securing programmable logic controllers (PLCs) and I/O modules against undervoltage brownouts and accidental reverse wiring in factory automation cabinets. IC Role / Device Role / Timing Role: Dual-threshold supervisor controlling back-to-back MOSFETs; maintains power continuity during 2.5V–60V input fluctuations with 500µs recovery. Use Value: Enables use of low-cost, low-RDS(on) N-channel MOSFETs instead of expensive P-channel devices, cutting conduction losses by 40%. |
| Portable Test Equipment Power Input | Telecom Remote Radio Unit (RRU) Protection |
Use Scenario: Safeguarding handheld oscilloscopes and multimeters from misconnected AC adapters or reversed battery packs during field service. IC Role / Device Role / Timing Role: Polarity and voltage window validator; blocks reverse inputs instantly and enforces 3.5V–18V operating window via UV/OV pins. Use Value: Prevents catastrophic damage from –40V reverse connection without adding series diode voltage drop or efficiency penalty. | Use Scenario: Protecting 48V-powered remote radio heads from lightning-induced surges and grid instability in outdoor base stations. IC Role / Device Role / Timing Role: High-reliability front-end protector; sustains 100V transients for >100ms while maintaining 70µA quiescent draw for always-on monitoring. Use Value: Extends mean time between failures (MTBF) by eliminating single-point failure modes in legacy discrete protection designs. |
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#PBF | 32ms GATE turn-on delay vs. 500µs; identical pinout, package, and protection specs. | Suitable for non-time-critical systems where slower fault recovery is acceptable (e.g., building HVAC controllers). | Select LTC4367IDD#PBF only if 32ms delay meets system restart timing budget; otherwise LTC4367IDD-1#PBF is preferred. |
| TPS26631PWPR | Fixed 36V OVP, no adjustable UV/OV; integrated 80V MOSFETs; 1.2ms recovery; smaller 10-pin WQFN. | Targeted at space-constrained USB PD and PoE applications; lacks –40V reverse protection and external MOSFET flexibility. | Choose TPS26631PWPR only for fixed-voltage, low-power designs requiring integrated FETs; not a functional replacement for adjustable, high-recovery automotive use. |
Compared with LTC4367IDD#PBF and TPS26631PWPR, the LTC4367IDD-1#PBF uniquely combines field-adjustable UV/OV thresholds, –40V reverse blocking, and 500µs fault recovery in a thermally efficient DFN package-making it optimal for automotive and industrial systems demanding both precision and speed.
Availability
LTC4367IDD-1#PBF is available at Aetrix Electronics and suitable for automotive ECU protection, industrial 48V power distribution, and portable instrumentation requiring stable component supply across extended temperature ranges (–40°C to +85°C).
Supply support for LTC4367IDD-1#PBF 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 digital signal processing semiconductors.
The LTC4367 family was designed specifically for ruggedized input protection in automotive, industrial, and telecom infrastructure-emphasizing wide-input tolerance, adjustable fault thresholds, and MOSFET gate drive optimization without external bias components.
FAQ
What is the maximum input voltage the LTC4367IDD-1#PBF can withstand?
The LTC4367IDD-1#PBF has an absolute maximum input voltage rating of –40V to +100V on the VIN pin. This allows it to survive automotive load dump transients and reverse battery connections without external protection components. Its normal operating range is 2.5V to 60V, and the device remains fully functional within this window while consuming only 70µA.
How does the LTC4367IDD-1#PBF differ from the standard LTC4367IDD#PBF?
The LTC4367IDD-1#PBF differs from LTC4367IDD#PBF solely in its GATE turn-on delay: 500µs (typ.) versus 32ms. All other electrical specifications-including UV/OV threshold accuracy, protection range, pinout, package, and temperature grade (–40°C to +85°C)-are identical. This makes LTC4367IDD-1#PBF ideal for applications requiring rapid fault recovery, such as real-time automotive control modules.
Can the LTC4367IDD-1#PBF be used with P-channel MOSFETs?
No, the LTC4367IDD-1#PBF is explicitly designed to drive back-to-back N-channel MOSFETs using its VOUT-referenced charge pump. It does not support P-channel configurations. Attempting to use P-MOSFETs would result in incorrect gate biasing and failure to achieve reverse polarity protection or low RDS(on) conduction. The datasheet specifies N-channel-only operation with recommended parts like Si7942.
What is the purpose of the exposed pad on the LTC4367IDD-1#PBF DFN package?
The exposed pad on the LTC4367IDD-1#PBF's 3mm × 3mm DFN package serves as a thermal and electrical connection point. It may be left unconnected or soldered to PCB ground to improve thermal dissipation (θJA = 43°C/W) and reduce junction temperature under sustained load conditions. No electrical functionality depends on this pad-it is optional but recommended for high-power or high-temperature applications.
Does the LTC4367IDD-1#PBF require external components to set overvoltage and undervoltage thresholds?
Yes, the LTC4367IDD-1#PBF requires external resistive dividers connected to the OV and UV pins to set overvoltage and undervoltage thresholds. Each threshold is configured using two resistors per pin (e.g., R1/R2 for OV, R3 for UV), leveraging the internal 0.5V reference. The low input leakage (<10nA) allows use of high-value resistors (e.g., 1MΩ range), minimizing quiescent current impact on the divider network.
LTC4367IDD-1#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tube
- 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#PBF FAQ
1.How can I place an order for LTC4367IDD-1#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4367IDD-1#PBF 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#PBF reliable?
The price and inventory of LTC4367IDD-1#PBF 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#PBF is usually 5 days.
3.What payment methods are accepted for LTC4367IDD-1#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4367IDD-1#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4367IDD-1#PBF?
LTC4367IDD-1#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4367IDD-1#PBF 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#PBF?
For technical support, including LTC4367IDD-1#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4367IDD-1#PBF requirements.
6.How does Aetrix verify that LTC4367IDD-1#PBF is sourced from the original manufacturer or authorized distributors?
All LTC4367IDD-1#PBF 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#PBF meets industry standards.
7.What is the process for return or replacement of LTC4367IDD-1#PBF?
All LTC4367IDD-1#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4367IDD-1#PBF, 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#PBF part is unused and in its original packaging.
Return procedure for LTC4367IDD-1#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC4367IDD-1#PBF 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…
