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Analog Devices Inc. LTC4441IS8-1#PBF
- Part No.:
- LTC4441IS8-1#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC4441IS8-1#PBF.pdf
- Description:
- IC GATE DRVR LOW-SIDE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:505
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Product details
Overview
LTC4441IS8-1#PBF from Analog Devices (formerly Linear Technology) is an 8-pin SOIC N-channel MOSFET gate driver delivering up to 6A peak output current, operating from 5V–25V VIN, with programmable 5V–8V gate drive voltage and 30ns propagation delay. It serves as a high-speed, logic-threshold driver in synchronous buck converters and motor control stages where fast, robust gate switching is critical.
For engineers reviewing the LTC4441IS8-1#PBF datasheet, LTC4441IS8-1#PBF pinout, LTC4441IS8-1#PBF application, or LTC4441IS8-1#PBF equivalent, key selection considerations include its SO-8 package, absence of blanking functionality (vs. 10-lead LTC4441), shutdown current <12µA, CMOS/TTL input thresholds independent of DRVCC, and thermal shutdown at 150°C with 20°C hysteresis.
Technical Context
The LTC4441IS8-1#PBF integrates a P-channel LDO regulator (DRVCC) programmable via FB pin, supporting gate drive voltages from 5V to 8V using a 330kΩ top resistor and adjustable R2 divider. Its input stage features supply-independent VIH = 2.4V / VIL = 1.4V thresholds with 1V hysteresis, enabling noise-immune operation even with inputs driven below ground or above VIN.
The output stage uses a hybrid NPN/P-MOS pull-up and N-MOS pull-down (RONL = 0.35Ω typ) to achieve 6A peak sourcing/sinking, 13ns rise/8ns fall times (CLOAD = 4.7nF), and 5ns nonoverlapping drive to prevent cross-conduction. Unlike the 10-lead LTC4441, the LTC4441IS8-1#PBF omits BLANK and RBLANK pins and associated leading-edge blanking circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 6A - sufficient to fully charge/discharge high-QG power MOSFETs (e.g., IRFB31N20D) within nanoseconds |
| VIN Supply Range | 5V to 25V - supports wide-input industrial and automotive DC/DC supplies without external regulation |
| DRVCC Programmable Range | 5V to 8V - enables optimal gate overdrive for both logic-level and standard-threshold N-MOSFETs |
| Propagation Delay | 30ns (tPHL) / 36ns (tPLH) - ensures tight timing control in high-frequency (>1MHz) switching applications |
| Input Threshold Hysteresis | 1V - suppresses false triggering from ringing or noise on IN signal in noisy power-stage environments |
| Shutdown Current | <12µA - enables ultra-low-power standby in battery-backed or energy-sensitive systems |
| Thermal Shutdown | 150°C activation with 20°C hysteresis - protects against sustained overload while allowing recovery after cooling |
Pinout & Package
Package: 8-Lead Plastic SO (Narrow, 0.150″), RoHS-compliant, rated for –40°C to +125°C junction temperature (θJA = 150°C/W).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 PGND | Power Ground | Low-inductance return path for driver output current; must be tied directly to MOSFET source or sense resistor ground |
| 2 SGND | Signal Ground | Reference for DRVCC regulator, FB, EN/SHDN, and IN; separate from PGND but joined near IC per layout guidelines |
| 3 IN | Logic Input | Noninverting TTL/CMOS-compatible input; accepts –15V to +15V swing; 1V hysteresis prevents noise-induced transitions |
| 4 EN/SHDN | Enable/Shutdown Control | Pull <0.45V → shutdown (<12µA IQ); 0.45–1.21V → standby (DRVCC active, OUT low); >1.21V → normal operation |
| 5 FB | DRVCC Regulator Feedback | Connects to center tap of R1/R2 divider (R1 = 330kΩ fixed) to set DRVCC output voltage between 5V and 8V |
| 6 VIN | Main Supply Input | Input to internal LDO; bypass with ≥1µF ceramic capacitor close to pin; max rating 28V absolute |
| 7 DRVCC | Regulated Gate Drive Supply | Output of internal LDO; powers driver core and logic; bypass with ≥10µF X5R/X7R ceramic to PGND |
| 8 OUT | Driver Output | High-current gate drive node; connects directly to MOSFET gate; capable of 6A peak sink/source |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Gate Drive Voltage | 5V–8V via FB pin divider - matches VGS requirements of diverse N-MOSFETs without external regulators |
| Supply-Independent Input Thresholds | VIH = 2.4V / VIL = 1.4V regardless of DRVCC or VIN - eliminates level-shifting in mixed-supply systems |
| Ultra-Low Shutdown Current | <12µA - enables long-term energy storage mode in portable or always-on power management circuits |
| Robust Input Voltage Range | IN tolerates –15V to +15V - withstands ground bounce, inductive kickback, and PCB ringing |
| Thermal Protection with Hysteresis | Shuts down at 150°C, re-enables at 130°C - prevents thermal runaway while permitting safe recovery |
Applications
| Motor Control | Industrial DC/DC Converters |
|---|---|
Use Scenario: Driving high-side N-MOSFETs in half-bridge motor drivers for 24V–48V BLDC or stepper systems. IC Role / Device Role: High-current, low-delay gate driver ensuring precise PWM timing and shoot-through prevention. Use Value: 6A peak current and 30ns propagation delay enable clean 100kHz+ switching, reducing MOSFET conduction losses and EMI. |
Use Scenario: Gate driving N-MOSFETs in isolated or non-isolated synchronous buck converters for PLC I/O modules. IC Role / Device Role: Primary gate driver interfacing with controller ICs (e.g., LTC3803) to manage power stage efficiency. Use Value: Adjustable DRVCC (5V–8V) optimizes RDS(on) reduction across temperature, improving full-load efficiency by >1.2%. |
| Telecom Line Cards | EV Charging Power Stages |
Use Scenario: Controlling hot-swap FETs and load switches in 48V telecom line cards requiring fast fault response. IC Role / Device Role: Robust gate driver with undervoltage lockout and thermal protection for reliable field operation. Use Value: Input tolerance (–15V to +15V) and 1V hysteresis prevent false turn-on during transient surges on control lines. |
Use Scenario: Driving high-current N-MOSFETs in on-board charger (OBC) PFC and DC/DC stages operating at 300–400V bus. IC Role / Device Role: Isolated gate driver companion (with external isolation) for high-voltage power conversion subsystems. Use Value: 25V VIN rating and 150°C thermal shutdown ensure reliability under sustained high-power, high-temperature conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel MOSFET gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5113SDX/NOPB | 3A peak output, dual-output, integrated bootstrap diode; no programmable DRVCC; SO-8 package | Lacks gate voltage programming and higher current capability; suited for lower-power, dual-FET configurations | Select when dual-output or bootstrap integration is prioritized over 6A drive strength and adjustable VGS |
| UCC27531DR | 5A peak output, 12V max VIN, no internal LDO, rail-to-rail output; SO-8 package | Requires external gate supply; lacks UVLO, thermal shutdown, and input hysteresis; higher speed (9ns delay) | Choose for ultra-high-speed, externally regulated gate drive where protection features are handled elsewhere |
Compared with LM5113SDX/NOPB and UCC27531DR, the LTC4441IS8-1#PBF uniquely combines 6A drive, programmable 5V–8V gate voltage, supply-independent thresholds, and comprehensive protection - making it optimal for high-reliability, wide-input industrial power stages where gate drive flexibility and fault resilience are critical.
Availability
LTC4441IS8-1#PBF is available at Aetrix Electronics and suitable for industrial DC/DC converters, motor control modules, and EV charging power stages requiring stable component supply, extended temperature support (–40°C to +125°C), and long-term lifecycle assurance.
Supply support for LTC4441IS8-1#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 power management semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC4441IS8-1#PBF belongs to Linear's precision power driver family, engineered specifically for high-efficiency, high-reliability N-MOSFET gate driving in demanding power conversion systems where timing accuracy, thermal safety, and supply flexibility are essential.
FAQ
What is the maximum allowable VIN voltage for the LTC4441IS8-1#PBF?
The absolute maximum VIN rating for the LTC4441IS8-1#PBF is 28V. Continuous operation above 25V is not recommended per datasheet specifications, as performance parameters (e.g., DRVCC regulation, thermal margin) are characterized up to 25V. Exceeding 28V risks permanent damage to the internal LDO and driver circuitry.
Does the LTC4441IS8-1#PBF support adjustable blanking time like the LTC4441?
No, the LTC4441IS8-1#PBF does not support blanking functionality. It is the SO-8 variant of the LTC4441-1, explicitly defined in the datasheet as lacking BLANK and RBLANK pins. Only the 10-lead MSOP-packaged LTC4441 includes adjustable leading-edge blanking for current-sense signal conditioning.
How is the DRVCC voltage programmed on the LTC4441IS8-1#PBF?
The DRVCC voltage is programmed using an external resistive divider between DRVCC and SGND, with the FB pin connected to the center tap. The top resistor (R1) must be 330kΩ for loop stability; R2 is selected using R2 = 406kΩ / (DRVCC − 1.21V) to achieve the desired output (5V–8V). For example, 6V DRVCC requires R2 ≈ 225kΩ.
What is the thermal resistance (θJA) of the LTC4441IS8-1#PBF in SO-8 package?
The junction-to-ambient thermal resistance (θJA) for the LTC4441IS8-1#PBF in the 8-lead SOIC package is 150°C/W, as specified in the Absolute Maximum Ratings table. This value assumes standard JEDEC 2-layer board conditions; actual θJA improves significantly with enhanced copper pour and thermal vias under the exposed pad (not present in SO-8).
Can the IN pin of the LTC4441IS8-1#PBF be driven below ground?
Yes, the IN pin of the LTC4441IS8-1#PBF is rated for –15V to +15V, allowing direct connection to signals that swing below ground - such as gate-drive feedback nodes or isolated logic outputs. This capability enhances noise immunity in high-dV/dt environments and eliminates need for external level shifters or clamping diodes.
LTC4441IS8-1#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- Low-Side
- Channel Type:
- Single
- Number of Drivers:
- 1
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 5V ~ 25V
- Logic Voltage - VIL, VIH:
- 1.8V, 2V
- Current - Peak Output (Source, Sink):
- 6A, 6A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- 13ns, 8ns
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LTC4441IS8-1#PBF FAQ
1.How can I place an order for LTC4441IS8-1#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4441IS8-1#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 LTC4441IS8-1#PBF reliable?
The price and inventory of LTC4441IS8-1#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC4441IS8-1#PBF is usually 5 days.
3.What payment methods are accepted for LTC4441IS8-1#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4441IS8-1#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4441IS8-1#PBF?
LTC4441IS8-1#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4441IS8-1#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 LTC4441IS8-1#PBF?
For technical support, including LTC4441IS8-1#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4441IS8-1#PBF requirements.
6.How does Aetrix verify that LTC4441IS8-1#PBF is sourced from the original manufacturer or authorized distributors?
All LTC4441IS8-1#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 LTC4441IS8-1#PBF meets industry standards.
7.What is the process for return or replacement of LTC4441IS8-1#PBF?
All LTC4441IS8-1#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4441IS8-1#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 LTC4441IS8-1#PBF part is unused and in its original packaging.
Return procedure for LTC4441IS8-1#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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