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Analog Devices Inc. LTC4360ISC8-2#TRMPBF
- Part No.:
- LTC4360ISC8-2#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Power Management - Specialized
- Package:
- 8-VFSOP (0.049", 1.25mm Width)
- Datasheet:
-
LTC4360ISC8-2#TRMPBF.pdf
- Description:
- IC OVERVOLTAGE PROT CONT SC70-8
- Quantity:
- Payment:
- Shipping:
Inventory:332
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Product details
Overview
LTC4360ISC8-2#TRMPBF from Analog Devices is an overvoltage protection controller designed to safeguard 2.5V–5.5V portable systems against input transients up to 80V. It controls an external N-channel MOSFET in series with the power path and adds optional negative voltage protection via an external P-channel MOSFET driven by GATEP. Used in USB-powered smartphones and MP3 players with multi-source adaptors.
For engineers reviewing the LTC4360ISC8-2#TRMPBF datasheet, LTC4360ISC8-2#TRMPBF pinout, LTC4360ISC8-2#TRMPBF application, or LTC4360ISC8-2#TRMPBF equivalent, key selection criteria include its 5.8V ±2% overvoltage threshold, <1µs turn-off response, adjustable dV/dt ramp-up, reverse voltage protection capability, and operation across –40°C to +85°C.
Technical Context
The LTC4360ISC8-2#TRMPBF implements a fast overvoltage comparator with 5.8V threshold and 25–300mV hysteresis, triggering a 30mA fast gate pull-down within 0.25–1µs. Its internal charge pump delivers ≥4.5V gate drive above VOUT for logic-level N-MOSFETs, while GATEP provides clamped (5.8V below VIN), resistively pulled-down (2MΩ) control of an external P-MOSFET for negative voltage protection.
Startup includes a 50–200ms delay before controlled GATE ramp-up at 3V/ms, limiting inrush current; after overvoltage, restart requires VIN to fall below 5.7V for 130ms. PWRGD asserts low 65ms after GATE exceeds its voltage threshold (e.g., 6.7V at VIN=5V), with 500kΩ pull-up to OUT and 3mA sink capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overvoltage Threshold | 5.8V ±2% - precise trip point for protecting 3.3V/5V ICs without TVS diodes |
| Turn-Off Propagation Delay | <1µs - isolates load before transient energy damages downstream circuitry |
| Input Voltage Range | 2.5V to 5.5V - matches core logic supply rails of portable SoCs and PMICs |
| Survivable Input Transient | Up to 80V - enables robustness against hot-plug spikes from wall/car adaptors |
| Operating Temperature | –40°C to +85°C - qualified for industrial and extended commercial environments |
| GATE Drive Capability | ≥4.5V above VOUT - ensures full enhancement of low-RDS(ON) logic-level N-MOSFETs |
| GATEP Clamp Voltage | 5.8V below VIN - protects P-MOSFET gate oxide during negative input events |
Pinout & Package
Package: 8-Lead Plastic SC70 (SC8), 2.0mm × 1.25mm footprint, 0.5mm pitch, –40°C to +85°C operating range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Supply Input | Accepts 2.5–5.5V system input; withstands transients to 80V; feeds overvoltage comparator |
| GND (2,3,4) | Ground Reference | Three dedicated ground pins minimize impedance in high-di/dt switching paths |
| GATEP | P-Channel MOSFET Gate Driver | Clamped 5.8V below VIN; 2MΩ internal pull-down; enables reverse polarity protection |
| GATE | N-Channel MOSFET Gate Driver | Charge-pump-driven output; 3V/ms ramp rate; clamped 6V above OUT |
| OUT | Output Sense | Connects to N-MOSFET source to reference GATE clamp and enable accurate PWRGD timing |
| PWRGD | Power-Good Status | Open-drain output with 500kΩ pull-up to OUT; asserts low 65ms after GATE exceeds threshold |
Key Features
| Feature | Design Value |
|---|---|
| No external TVS or input capacitor required | Enables compact, cost-optimized layouts for space-constrained portable PCBs |
| Adjustable dV/dt ramp-up | 3V/ms default GATE slew rate limits inrush into COUT, reducing stress on input capacitors |
| Reverse voltage protection (GATEP) | Supports dual-input systems where negative voltage may appear at IN (e.g., misconnected car adaptor) |
| 130ms startup delay with UVLO/OV restart | Prevents false triggering during cable hot-plug transients or unstable adaptor turn-on |
| Low quiescent current (220–400µA) | Minimizes standby power loss in battery-powered devices with always-connected charging ports |
Applications
| USB Power Protection | Smartphone Charging Circuit |
|---|---|
|
Use Scenario: USB port supplies 5V but may be exposed to 12V/24V automotive or lab power sources due to user error. IC Role / Device Role / Timing Role: LTC4360ISC8-2#TRMPBF monitors IN, disables N-MOSFET pass device within 1µs if >5.8V, and activates P-MOSFET via GATEP if negative voltage appears. Use Value: Prevents permanent damage to USB PHY, PMIC, and application processor from DC overvoltage or reverse polarity-no external TVS needed. |
Use Scenario: Dual-input smartphone accepts power from USB (5V) or car charger (12V), risking overvoltage during hot-swap. IC Role / Device Role / Timing Role: LTC4360ISC8-2#TRMPBF acts as front-end protector: blocks >5.8V on IN, clamps GATEP during negative events, and asserts PWRGD only after stable VOUT. Use Value: Enables safe multi-adaptor compatibility while maintaining <1µs fault response and –40°C to +85°C reliability. |
| MP3/MP4 Player Power Management | Digital Camera Input Protection |
|
Use Scenario: Portable media player uses micro-USB for charging and data; users plug in unregulated wall adapters causing 20V+ spikes. IC Role / Device Role / Timing Role: LTC4360ISC8-2#TRMPBF controls Si1470DH N-MOSFET, absorbs inductive cable energy via MOSFET avalanche, and holds off until VIN settles below 5.7V. Use Value: Eliminates need for bulky input filtering-supports 10µF COUT and survives 80V non-repetitive transients per JEDEC JESD22-A114. |
Use Scenario: Digital camera with USB and DC jack inputs experiences 50V hot-plug transients when connecting to bench supplies. IC Role / Device Role / Timing Role: LTC4360ISC8-2#TRMPBF drives 60V-rated N-MOSFET (e.g., FDC5612), uses GATEP to block –24V faults, and delays PWRGD until VOUT stabilizes. Use Value: Provides single-chip solution for ±24V tolerance and 80V surge immunity-reducing BOM count vs. discrete TVS + ideal diode combos. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar overvoltage protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT4356-1IMS#PBF | Wider input range (4V–80V); adjustable OVP threshold (1.2V–80V); integrated sense resistor; no GATEP for reverse voltage | Targets higher-voltage industrial systems; lacks native negative voltage protection | Select LT4356-1IMS#PBF when adjustable OVP threshold or 4V start-up is required; not drop-in for LTC4360ISC8-2#TRMPBF's 2.5V–5.5V domain |
| LTC4365IDCB#TRMPBF | Includes reverse current blocking (ideal diode mode); same 5.8V OVP; adds thermal shutdown; SC70-6 package (6-pin) | Eliminates backflow from battery to input; smaller footprint but no GATEP pin | Choose LTC4365IDCB#TRMPBF when bidirectional blocking is critical; GATEP functionality is absent, so negative voltage protection requires external circuitry |
Compared with LT4356-1IMS#PBF and LTC4365IDCB#TRMPBF, the LTC4360ISC8-2#TRMPBF uniquely integrates both overvoltage cutoff and dedicated negative voltage protection in an 8-pin SC70, making it optimal for compact dual-input consumer devices requiring ±24V tolerance without layout redesign.
Availability
LTC4360ISC8-2#TRMPBF is available at Aetrix Electronics and suitable for USB protection, smartphone charging circuits, MP3/MP4 player power management, and digital camera input protection requiring stable component supply across industrial temperature ranges.
Supply support for LTC4360ISC8-2#TRMPBF 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, communications, and industrial markets since 1965.
The LTC4360 family was engineered specifically for overvoltage and reverse polarity protection in portable electronics with multi-source power inputs, emphasizing ultrafast response, minimal external components, and extended temperature operation.
FAQ
What is the overvoltage threshold accuracy of the LTC4360ISC8-2#TRMPBF?
The LTC4360ISC8-2#TRMPBF features a 5.8V overvoltage threshold with ±2% accuracy across –40°C to +85°C, ensuring reliable protection for 3.3V and 5V systems without calibration. This specification is guaranteed in the electrical characteristics table under VIN(OV) parameter, with hysteresis of 25–300mV to prevent chatter during threshold crossing.
How does the LTC4360ISC8-2#TRMPBF provide reverse voltage protection?
The LTC4360ISC8-2#TRMPBF provides reverse voltage protection through its GATEP pin, which drives an external P-channel MOSFET. GATEP is internally clamped to 5.8V below VIN and features a 2MΩ pull-down to ground. When a negative voltage appears at IN, GATEP turns on the P-MOSFET to block reverse current flow-this function is exclusive to the -2 variant and not present in LTC4360-1.
What is the maximum input transient voltage the LTC4360ISC8-2#TRMPBF can survive?
The LTC4360ISC8-2#TRMPBF is rated to survive input transients up to 80V, as specified in the Absolute Maximum Ratings table. Its IN pin withstands this level continuously during fault conditions, enabling robust protection against hot-plug spikes from wall adaptors, car batteries, and lab supplies without requiring external TVS diodes in most designs.
Does the LTC4360ISC8-2#TRMPBF require external components for basic overvoltage protection?
No, the LTC4360ISC8-2#TRMPBF achieves full overvoltage protection with only an external N-channel MOSFET and output capacitor-no input capacitor or TVS diode is required for transients ≤80V. The datasheet confirms this in the Features list ("No Input Capacitor or TVS Required for Most Applications") and Typical Application schematics.
What is the purpose of the PWRGD pin on the LTC4360ISC8-2#TRMPBF?
The PWRGD pin on the LTC4360ISC8-2#TRMPBF is an open-drain power-good indicator that pulls low 65ms after the GATE voltage exceeds its threshold (e.g., 6.7V at VIN=5V). It has a 500kΩ internal pull-up to OUT and can sink up to 3mA, allowing direct connection to microcontroller reset lines or status LEDs without external circuitry.
LTC4360ISC8-2#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-VFSOP (0.049", 1.25mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Handheld/Mobile Devices
- Current - Supply:
- 220µA
- Voltage - Supply:
- 2.5V ~ 80V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-8
LTC4360ISC8-2#TRMPBF FAQ
1.How can I place an order for LTC4360ISC8-2#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4360ISC8-2#TRMPBF 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 LTC4360ISC8-2#TRMPBF reliable?
The price and inventory of LTC4360ISC8-2#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC4360ISC8-2#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC4360ISC8-2#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4360ISC8-2#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4360ISC8-2#TRMPBF?
LTC4360ISC8-2#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4360ISC8-2#TRMPBF 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 LTC4360ISC8-2#TRMPBF?
For technical support, including LTC4360ISC8-2#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4360ISC8-2#TRMPBF requirements.
6.How does Aetrix verify that LTC4360ISC8-2#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC4360ISC8-2#TRMPBF 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 LTC4360ISC8-2#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC4360ISC8-2#TRMPBF?
All LTC4360ISC8-2#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4360ISC8-2#TRMPBF, 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 LTC4360ISC8-2#TRMPBF part is unused and in its original packaging.
Return procedure for LTC4360ISC8-2#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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