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Analog Devices Inc. LTC1154HS8#TRPBF
- Part No.:
- LTC1154HS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC1154HS8#TRPBF.pdf
- Description:
- IC GATE DRVR HIGH-SIDE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,182
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Product details
Overview
LTC1154HS8#TRPBF from Analog Devices (formerly Linear Technology) is a micropower high-side N-channel MOSFET driver with integrated charge pump, overcurrent sensing, thermal shutdown interface, and open-drain status reporting. It operates from 4.5V to 18V supply, draws only 8µA standby current, and delivers gate voltage up to VS + 25V - enabling full enhancement of low-RDS(on) N-MOSFETs in high-side switching applications such as laptop power control and motor drivers.
For engineers reviewing the LTC1154HS8#TRPBF datasheet, LTC1154HS8#TRPBF pinout, LTC1154HS8#TRPBF application, or LTC1154HS8#TRPBF equivalent, this page provides verified functional specifications, thermal-grade package details (–40°C to 150°C), confirmed protection features (short-circuit turn-off < 40µs, programmable drain-sense delay), and real-world design context for industrial and automotive high-side switch implementations.
Technical Context
The LTC1154HS8#TRPBF implements an adaptive on-chip charge pump that generates gate drive above VS without external capacitors, supporting N-MOSFETs in high-side configurations where P-MOSFETs are impractical. Its analog comparator monitors drain-source voltage drop across an external sense resistor against a precision 100mV internal reference.
Protection logic includes edge-triggered shutdown input (compatible with PTC thermistors), latchable overcurrent detection with built-in 10µs blanking, and fast gate discharge (<25µs) during fault conditions. The STATUS pin provides open-drain fault signaling, while ENABLE allows synchronized control of multiple drivers in banked configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5V to 18V - supports wide-input industrial and automotive rails without external regulation. |
| Standby Quiescent Current | 8µA max - enables always-on monitoring in battery-powered systems like portable instrumentation. |
| Gate Drive Voltage Boost | VS + 15V typical at 12V supply - ensures robust N-MOSFET enhancement even with high RDS(on) devices. |
| Drain Sense Threshold | 75mV to 125mV - precise 100mV nominal trip point for accurate current limiting with standard sense resistors. |
| Short-Circuit Turn-Off Time | 5µs to 40µs - fast fault response prevents MOSFET destruction under sustained overload. |
| Operating Temperature Range | –40°C to +150°C - qualified for under-hood automotive and high-temperature industrial environments. |
| Status Output Type | Open-drain with 0.4V max low-level voltage at 400µA - directly interfaces to 3.3V/5V µP interrupt inputs. |
Pinout & Package
Package: 8-Lead Plastic SOIC (S8), RoHS-compliant, moisture-sensitive level 3, rated for –40°C to +150°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Active-high input control | Directly drives internal latch; TTL/CMOS compatible with 1.3V threshold and 100mV hysteresis. |
| EN (Pin 2) | Enable input | Inhibits IN signal when high; used for multi-driver synchronization or inverted logic control. |
| STATUS (Pin 3) | Fault reporting output | Open-drain output pulled low during overcurrent, thermal shutdown, or latch-off events. |
| GND (Pin 4) | Ground reference | Analog/digital common return; requires low-impedance connection to minimize noise coupling. |
| VS (Pin 8) | Power supply input | Provides bias for all circuitry and serves as Kelvin reference for drain-sense comparator. |
| DS (Pin 7) | Drain sense input | Compares voltage drop across external sense resistor to internal 100mV reference. |
| G (Pin 6) | Gate drive output | Drives MOSFET gate to VS or higher; high-impedance when boosted - minimizes loading effects. |
| SD (Pin 5) | Shutdown input | Edge-triggered disable; latches off gate drive and asserts STATUS low upon fault detection. |
Key Features
| Feature | Design Value |
|---|---|
| No external charge pump capacitors | On-chip adaptive charge pump eliminates BOM cost and layout area for gate boost components. |
| Programmable overcurrent delay | RC network on DS pin allows adjustable blanking time (µs to seconds) to avoid false trips on lamp/motor inrush. |
| Thermal shutdown interface | Direct compatibility with standard PTC thermistors (e.g., Keystone RL2006) for system-level temperature cutoff. |
| Controlled gate slew rates | Optimized rise/fall times reduce EMI during normal switching while enabling sub-µs discharge during faults. |
| Low-impedance fault reporting | STATUS output sinks ≥400µA at <0.4V - eliminates need for external pull-down or level-shifting circuitry. |
Applications
| Laptop Power Switching | SCSI Termination Power Control |
|---|---|
|
Use Scenario: Enabling/disabling main 5V or 12V rail to CPU core or peripheral modules based on sleep/wake state. IC Role / Device Role / Timing Role: High-side switch controller managing power sequencing and isolation between subsystems. Use Value: 8µA standby current extends battery life; integrated short-circuit protection avoids fuse replacement in field units. |
Use Scenario: Dynamically powering SCSI bus termination resistors only when active devices are present. IC Role / Device Role / Timing Role: Precision current-limited high-side switch ensuring stable termination voltage under hot-plug conditions. Use Value: Drain-sense accuracy (±25mV) maintains termination compliance across temperature; STATUS feedback confirms rail integrity to host controller. |
| Automotive Body Control Module | Industrial Stepper Motor Driver |
|
Use Scenario: Controlling 12V/24V loads such as interior lighting, window motors, or HVAC actuators. IC Role / Device Role / Timing Role: Fault-tolerant high-side driver with thermal derating and overcurrent latching per ISO 16750-2. Use Value: –40°C to +150°C rating meets AEC-Q100 Grade 1 requirements; PTC-compatible SD pin enables board-level thermal monitoring. |
Use Scenario: Driving high-current N-MOSFET half-bridges in bipolar stepper motor phase control. IC Role / Device Role / Timing Role: Gate driver with fast (<40µs) short-circuit response to protect windings during stall or wiring faults. Use Value: Sub-µs fault turn-off prevents MOSFET avalanche failure; STATUS output triggers µP to halt step sequence and log error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side MOSFET driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2051BDR | Lower supply range (2.7–5.5V), no internal charge pump, fixed 1.5A current limit, no drain-sense programmability. | Suitable only for low-voltage USB-powered peripherals; lacks thermal shutdown interface and wide-temp support. | Choose only for 3.3V/5V consumer electronics where cost is critical and protection granularity is secondary. |
| MAX14914ATP+ | Integrated 8-bit SPI interface, 60V abs max, programmable current limit via register, 125°C max junction temp. | Targets PLC I/O modules requiring digital configuration and diagnostics; larger footprint and higher BOM cost. | Select when system-level configurability, fault logging, or >150°C ambient operation is required - not a drop-in replacement. |
Compared with TPS2051BDR and MAX14914ATP+, the LTC1154HS8#TRPBF uniquely balances micropower operation (8µA), wide supply range (4.5–18V), analog-programmable overcurrent timing, and extended temperature capability (–40°C to +150°C) in an 8-pin SOIC - making it optimal for ruggedized embedded power switches where simplicity, reliability, and thermal resilience are prioritized over digital control.
Availability
LTC1154HS8#TRPBF is available at Aetrix Electronics and suitable for laptop power management, automotive body control, and industrial motor drive applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC1154HS8#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 and maintains its legacy high-performance analog portfolio, emphasizing precision power management, signal conditioning, and robust industrial ICs.
The LTC1154HS8#TRPBF belongs to Linear's high-side driver family designed specifically for replacing mechanical relays and P-channel MOSFETs in efficiency-critical, thermally demanding applications - delivering reliability through integrated protection and minimal external components.
FAQ
What is the maximum operating temperature for the LTC1154HS8#TRPBF?
The LTC1154HS8#TRPBF is specified for continuous operation from –40°C to +150°C ambient temperature, with a maximum junction temperature of 150°C. This H-grade qualification makes it suitable for under-hood automotive use and high-temperature industrial enclosures where standard commercial-grade drivers would fail.
Does the LTC1154HS8#TRPBF require external capacitors for its charge pump?
No, the LTC1154HS8#TRPBF integrates all charge pump capacitance on-die. Unlike discrete charge pump solutions, it requires zero external capacitors to generate gate voltage above VS - simplifying layout, reducing bill-of-materials cost, and eliminating capacitor aging or ESR-related performance drift over time.
How does the drain sense function work on the LTC1154HS8#TRPBF?
The LTC1154HS8#TRPBF compares voltage at the DS pin to VS using an internal 100mV reference. When the drop across the external sense resistor exceeds this threshold, the device latches off the gate drive and pulls STATUS low. An RC network on DS allows programmable delay to accommodate inrush currents without compromising fault response.
Can the LTC1154HS8#TRPBF drive a MOSFET with RDS(on) below 10mΩ?
Yes - the LTC1154HS8#TRPBF supports low-RDS(on) N-MOSFETs by delivering gate voltage up to VS + 25V (at 12V supply), ensuring full enhancement even with devices requiring >10V VGS. Its 100mV sense threshold enables accurate current limiting down to ~10A with a 10mΩ resistor, validated in typical application circuits.
Is the STATUS output of the LTC1154HS8#TRPBF compatible with 3.3V microcontrollers?
Yes - the STATUS pin is open-drain with ≤0.4V low-level voltage at 400µA sink current, allowing direct connection to 3.3V or 5V µP interrupt inputs using a single pull-up resistor (e.g., 51kΩ to 3.3V). No level-shifter or additional buffering is required for reliable fault signaling.
LTC1154HS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- High-Side
- Channel Type:
- Single
- Number of Drivers:
- 1
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 4.5V ~ 18V
- Logic Voltage - VIL, VIH:
- 0.8V, 2V
- Current - Peak Output (Source, Sink):
- -
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- -
- Operating Temperature:
- -40°C ~ 150°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LTC1154HS8#TRPBF FAQ
1.How can I place an order for LTC1154HS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1154HS8#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 LTC1154HS8#TRPBF reliable?
The price and inventory of LTC1154HS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1154HS8#TRPBF is usually 5 days.
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LTC1154HS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1154HS8#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 LTC1154HS8#TRPBF?
For technical support, including LTC1154HS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1154HS8#TRPBF requirements.
6.How does Aetrix verify that LTC1154HS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1154HS8#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 LTC1154HS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1154HS8#TRPBF?
All LTC1154HS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1154HS8#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 LTC1154HS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC1154HS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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