My Inquiry
My Account
Analog Devices Inc. LTC4361CTS8-1#TRMPBF
- Part No.:
- LTC4361CTS8-1#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Power Management - Specialized
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC4361CTS8-1#TRMPBF.pdf
- Description:
- IC OVERVOLTAGE/CUR PROT TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,304
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC4361CTS8-1#TRMPBF from Analog Devices is an overvoltage/overcurrent protection controller designed to safeguard 2.5V–5.5V portable systems using external N-channel MOSFETs. It provides 5.8V ±2% overvoltage threshold, 50mV ±10% overcurrent trip, <1µs overvoltage turn-off, and latchoff recovery mode-used in USB-powered handheld devices against 80V transients.
For engineers reviewing the LTC4361CTS8-1#TRMPBF datasheet, LTC4361CTS8-1#TRMPBF pinout, LTC4361CTS8-1#TRMPBF application, or LTC4361CTS8-1#TRMPBF equivalent, key selection criteria include its TSOT-23-8 package, 0°C to 70°C temperature grade, latchoff behavior after overcurrent, and GATE/GATEP dual-MOSFET drive capability for bidirectional protection.
Technical Context
The LTC4361CTS8-1#TRMPBF implements dual-comparator protection: a precision 5.8V overvoltage comparator with 25–300mV hysteresis and a 50mV overcurrent comparator with 10µs glitch filter. Its internal charge pump delivers ≥4.5V gate drive above OUT for logic-level N-MOSFETs, while GATEP provides clamped (5.8V below VIN) drive for optional P-MOSFET reverse-voltage protection.
Startup includes a 130ms delay before controlled GATE ramp-up at 3V/ms, limiting inrush current; ON pin enables CMOS-compatible active-low control with 5µA internal pull-down. After overvoltage, GATE shuts off within 1µs and remains latched until VIN falls below 5.7V for >130ms-no auto-retry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overvoltage Threshold | 5.8V ±2% - precise trip point for protecting 3.3V/5V loads from wall adapter or hot-plug transients |
| Overcurrent Threshold | 50mV ±10% - sets current limit via external sense resistor; supports accurate ITRIP = 50mV/RSENSE |
| GATE Turn-Off Delay | <1µs - isolates downstream circuitry before transient energy propagates into load capacitance |
| Operating Voltage Range | 2.5V to 5.5V - matches core logic supply rails of smartphones, MP3 players, and digital cameras |
| Max Input Withstand | 80V - enables robust protection without TVS diodes in most portable applications |
| Temperature Range | 0°C to 70°C - commercial-grade operation suitable for consumer handheld environments |
| Package | 8-Lead TSOT-23 - compact footprint compatible with space-constrained mobile PCB layouts |
Pinout & Package
8-Lead Plastic TSOT-23 package (0.65mm pitch, 2.9mm × 1.6mm footprint), exposed pad not electrically connected in this variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ON | Active-low enable input | Drives GATE low and reduces supply current to 1.5µA when high; internal 5µA pull-down allows tie-to-ground or open-circuit use |
| OUT | Output voltage sense reference | Connects to source of external N-MOSFET to define GATE-to-OUT clamp voltage (≥4.5V above OUT) |
| GATEP | P-channel MOSFET gate driver | Internally clamped to 5.8V below VIN; 2MΩ pull-down enables negative voltage protection when used with external P-MOSFET |
| GND | Ground reference | Common return for all internal comparators, charge pump, and output drivers |
| PWRGD | Open-drain power-good status | Pulls low 65ms after GATE exceeds VGATE(TH); 500kΩ pull-up to OUT supports LED or microcontroller monitoring |
| GATE | N-channel MOSFET gate driver | Charge-pump-driven output with 3V/ms ramp rate; fast 30mA pull-down ensures sub-1µs turn-off during overvoltage |
| SENSE | Current sense input | Monitors voltage drop across external RSENSE; trips on >50mV for >10µs to prevent MOSFET thermal failure |
| IN | Main supply input | Accepts 2.5V–5.5V operating input; withstands up to 80V transients; overvoltage comparator input |
Key Features
| Feature | Design Value |
|---|---|
| No external TVS required | 80V input withstand eliminates need for transient voltage suppressors in most USB/handheld applications |
| Gentle shutdown | <1µs GATE turn-off with controlled energy dissipation prevents system reset or latch-up during overvoltage |
| Adjustable dV/dt ramp-up | 3V/ms default GATE slew rate limits inrush current; external capacitor enables further reduction for large COUT |
| Reverse voltage protection | GATEP pin drives external P-MOSFET to block negative inputs down to –BVDSS of selected FET |
| Latchoff overcurrent response | LTC4361CTS8-1#TRMPBF holds GATE low after overcurrent until IN drops below 2.1V or ON rises above 1.5V - prevents repeated fault cycling |
Applications
| USB Protection | Smartphone Power Input |
|---|---|
Use Scenario: Hot-plugging a 20V wall adapter into a 5V USB port on a smartphone. IC Role / Device Role / Timing Role: Overvoltage/overcurrent controller that isolates the baseband processor and PMIC within 1µs of transient detection. Use Value: Prevents permanent damage to 28nm/16nm SoCs by clamping input to safe levels without requiring TVS diodes or redesigning power path layout. | Use Scenario: Simultaneous connection of car charger (12V) and USB (5V) to a dual-input smartphone. IC Role / Device Role / Timing Role: Front-end protector managing input arbitration and surge suppression before battery charging IC. Use Value: Enables safe multi-source power routing while maintaining <1µs fault response and zero additional BOM cost for transient suppression. |
| Digital Camera Power Management | MP3/MP4 Player Protection |
Use Scenario: Inserting a faulty AC adapter causing 40V overshoot during camera boot sequence. IC Role / Device Role / Timing Role: System-level overvoltage supervisor controlling series N-MOSFET gate to decouple sensor and image processor rails. Use Value: Guarantees clean 3.3V rail startup by enforcing 130ms pre-ramp delay and soft GATE ramp, eliminating brownout resets. | Use Scenario: Repeated insertion/removal of micro-USB cables generating inductive kickback in portable audio players. IC Role / Device Role / Timing Role: Inrush limiter and overcurrent breaker placed between USB VBUS and audio codec power domain. Use Value: Limits peak inrush to ≤1.5A for 100µF local bulk cap, preventing USB port current-limit tripping and audible pop in headphones. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar overvoltage/overcurrent protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD3S014RTER | Integrated 5.5V USB switch + ESD protection; no adjustable overvoltage threshold or external MOSFET control | Targeted at USB 2.0 data line + VBUS protection only; lacks 80V transient handling and programmable trip points | Select LTC4361CTS8-1#TRMPBF when discrete MOSFET control, high-voltage robustness, or latchoff behavior is required. |
| MAX14749ETA+T | Single-chip 5.5V overvoltage protector with integrated 28mΩ FET; fixed 6.2V OV threshold; no overcurrent sensing | Optimized for space-constrained USB-C ports; no SENSE pin or external current-sense flexibility | Choose LTC4361CTS8-1#TRMPBF for designs needing field-serviceable FET replacement, custom current limits, or higher OV accuracy (±2% vs ±5%). |
Compared with TPD3S014RTER and MAX14749ETA+T, LTC4361CTS8-1#TRMPBF offers superior design flexibility through external MOSFET selection, precise 5.8V ±2% overvoltage threshold, independent overcurrent sensing, and configurable latchoff recovery-making it ideal for ruggedized portable electronics where reliability and serviceability are critical.
Availability
LTC4361CTS8-1#TRMPBF is available at Aetrix Electronics and suitable for USB protection, smartphone power input, digital camera power management, and MP3/MP4 player protection requiring stable component supply across consumer electronics production cycles.
Supply support for LTC4361CTS8-1#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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and consumer markets.
LTC4361CTS8-1#TRMPBF belongs to the LTC® overvoltage/overcurrent protection controller family, engineered specifically for portable electronics with multiple power sources-including USB, wall adapters, and car chargers-where compact size, high transient immunity, and precise fault thresholds are essential.
FAQ
What is the overvoltage protection threshold of the LTC4361CTS8-1#TRMPBF?
The LTC4361CTS8-1#TRMPBF features a precisely trimmed 5.8V overvoltage threshold with ±2% accuracy over temperature. This value is specified as VIN(OV) in the Electrical Characteristics table and applies directly to the IN pin. The device asserts GATE low within 1µs when IN exceeds this threshold, isolating downstream circuitry. Recovery requires VIN to fall below 5.7V (VIN(OVL)) for more than 130ms before restart.
Does the LTC4361CTS8-1#TRMPBF support automatic retry after overcurrent fault?
No, the LTC4361CTS8-1#TRMPBF uses latchoff recovery after overcurrent events. Unlike the LTC4361-2 variants, it remains disabled until manually reset by cycling IN below 2.1V (UVLO threshold) or driving ON above 1.5V for >500µs. This behavior prevents uncontrolled re-engagement during persistent faults and is confirmed in the FEATURES section and OPERATION description of the datasheet.
What package type and footprint does the LTC4361CTS8-1#TRMPBF use?
The LTC4361CTS8-1#TRMPBF is housed in an 8-Lead Plastic TSOT-23 package (also referenced as TS8), measuring 2.9mm × 1.6mm with 0.65mm lead pitch. Pin 1 is marked by a bar on the top surface. This package is distinct from the DFN variant (e.g., LTC4361CDC-1#TRMPBF) and is optimized for low-profile, high-density portable PCB layouts.
Can the LTC4361CTS8-1#TRMPBF protect against negative input voltages?
Yes, the LTC4361CTS8-1#TRMPBF supports negative input voltage protection via its GATEP pin, which drives an optional external P-channel MOSFET. When enabled, GATEP is internally clamped to 5.8V below VIN and includes a 2MΩ pull-down to ground. This configuration blocks reverse current and protects downstream circuitry from negative transients down to the BVDSS rating of the selected P-MOSFET.
What is the maximum input voltage the LTC4361CTS8-1#TRMPBF can withstand without damage?
The LTC4361CTS8-1#TRMPBF has an absolute maximum input voltage rating of 85V on the IN pin, and its overvoltage protection function operates reliably up to 80V transients. This high withstand capability-documented in both Absolute Maximum Ratings and Typical Application sections-enables robust protection in handheld devices without requiring external TVS diodes in most use cases.
LTC4361CTS8-1#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Handheld/Mobile Devices
- Current - Supply:
- 220µA
- Voltage - Supply:
- 2.5V ~ 80V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
LTC4361CTS8-1#TRMPBF FAQ
1.How can I place an order for LTC4361CTS8-1#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4361CTS8-1#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 LTC4361CTS8-1#TRMPBF reliable?
The price and inventory of LTC4361CTS8-1#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC4361CTS8-1#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC4361CTS8-1#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4361CTS8-1#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4361CTS8-1#TRMPBF?
LTC4361CTS8-1#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4361CTS8-1#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 LTC4361CTS8-1#TRMPBF?
For technical support, including LTC4361CTS8-1#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4361CTS8-1#TRMPBF requirements.
6.How does Aetrix verify that LTC4361CTS8-1#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC4361CTS8-1#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 LTC4361CTS8-1#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC4361CTS8-1#TRMPBF?
All LTC4361CTS8-1#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4361CTS8-1#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 LTC4361CTS8-1#TRMPBF part is unused and in its original packaging.
Return procedure for LTC4361CTS8-1#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC4361CTS8-1#TRMPBF 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…
