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Analog Devices Inc. LTC4441EMSE#PBF
- Part No.:
- LTC4441EMSE#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Gate Drivers
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC4441EMSE#PBF.pdf
- Description:
- IC GATE DRVR LOW-SIDE 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:197
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Product details
Overview
LTC4441EMSE#PBF from Analog Devices (formerly Linear Technology) is a high-speed, 6A peak-output N-channel MOSFET gate driver in a thermally enhanced 10-lead MSOP package with exposed pad. It operates from 5V to 25V VIN, delivers 30ns propagation delay, features adjustable 5V–8V gate drive voltage via FB pin feedback, and integrates undervoltage lockout, overtemperature protection, and <12µA shutdown current. It drives power stages in synchronous buck converters.
For engineers reviewing the LTC4441EMSE#PBF datasheet, LTC4441EMSE#PBF pinout, LTC4441EMSE#PBF application, or LTC4441EMSE#PBF equivalent, key selection criteria include its 6A peak pull-up/pull-down capability, programmable DRVCC regulation, logic-level input thresholds independent of supply voltage, open-drain BLANK output for leading-edge blanking, and thermal performance in the MSOP-10EP package.
Technical Context
The LTC4441EMSE#PBF employs an adaptive pre-driver stage with 5ns nonoverlapping timing to minimize cross-conduction between its NPN/P-MOS pull-up (Q1+P1) and N-MOS pull-down (N1) output devices. Its internal P-channel LDO regulator supplies DRVCC (5V–8V) from VIN (5V–25V), with 370mV dropout at 40mA load and ±0.1% line/load regulation.
It features supply-independent CMOS/TTL input thresholds (VIH = 2.4V, VIL = 1.4V, 1V hysteresis), enabling robust interfacing with controllers across varying supply conditions. The BLANK pin provides programmable leading-edge blanking (200ns typical at RBLANK = 200kΩ), while EN/SHDN supports three-state control: enable (>1.21V), disable (0.45V–1.21V), and ultra-low-power shutdown (<0.45V, <12µA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 6A pull-up and pull-down - enables fast switching of high-QG power MOSFETs (e.g., >70nC) without external buffers. |
| Propagation Delay | 30ns (tPHL), 36ns (tPLH) - ensures tight timing alignment in high-frequency (>1MHz) switching controllers. |
| DRVCC Regulation Range | 5V to 8V, programmable via FB pin divider - supports both logic-level (e.g., Si7370) and standard-threshold MOSFETs. |
| Input Threshold Hysteresis | 1V (VIH–VIL) - suppresses false triggering from noise on IN or EN/SHDN pins in noisy power environments. |
| Shutdown Supply Current | <12µA - reduces system standby power in battery-backed or energy-sensitive applications. |
| Thermal Resistance θJA | 38°C/W (MSOP-10EP, exposed pad soldered) - enables sustained 6A peak operation up to 125°C junction temperature. |
| Blanking Time Range | 75ns to >400ns, adjusted by RBLANK resistor - synchronizes blanking window with PCB-layout-dependent ringing duration. |
Pinout & Package
Package: 10-Lead Plastic MSOP with Exposed Pad (MSE), RoHS-compliant, –40°C to +125°C operating junction temperature. Exposed pad (Pin 11) must be soldered to PCB ground for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND (1) | Power Ground Reference | Low-inductance return for DRVCC bypass capacitor and power MOSFET source path; must be tied directly to SGND near IC. |
| BLANK (2) | Open-Drain Blanking Signal Output | Asserts blanking window on SENSE+ input of controller; pulled low during driver turn-on, high-impedance after programmable delay. |
| RBLANK (3) | Blanking Time Adjustment Input | Resistor-to-SGND sets blanking duration; 200kΩ yields ~200ns; floating disables blanking function. |
| SGND (4) | Signal Ground Reference | Return for DRVCC regulator, input buffers, and FB feedback network; separate from PGND but joined near IC. |
| IN (5) | Noninverting Logic Input | TTL/CMOS-compatible input with supply-independent thresholds; withstands –15V to +15V; high-impedance (±10µA max). |
| EN/SHDN (6) | Enable/Shutdown Control | Three-state interface: >1.21V = active, 0.45–1.21V = output forced low, <0.45V = full shutdown (<12µA IQ). |
| FB (7) | DRVCC Regulator Feedback | Connects to center tap of R1/R2 divider (R1 = 330kΩ fixed); sets DRVCC output voltage (5–8V) with ±100mV accuracy. |
| VIN (8) | Main Supply Input | Accepts 5V–25V input; powers DRVCC regulator; requires local 1µF ceramic bypass to SGND. |
| DRVCC (9) | Regulated Gate Drive Supply | Output of internal LDO; powers driver core and logic; requires 10µF X5R/X7R ceramic bypass to PGND. |
| OUT (10) | Gate Driver Output | Drives N-channel MOSFET gate; 0.35Ω typical pull-down resistance ensures fast turn-off and prevents shoot-through. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable Gate Drive Voltage | 5V–8V via FB pin - eliminates need for external LDO and enables optimal VGS selection for RDS(ON) vs. switching loss trade-offs. |
| Programmable Leading-Edge Blanking | Configurable blanking time (75ns–400ns+) using single RBLANK resistor - matches layout-specific ringing without controller modification. |
| Supply-Independent Input Thresholds | VIH = 2.4V, VIL = 1.4V, 1V hysteresis - ensures reliable logic-level interfacing regardless of DRVCC or VIN variation. |
| Ultra-Low Shutdown Current | <12µA - meets stringent standby power budgets in industrial and automotive subsystems. |
| Integrated Thermal Protection | 150°C trip point with 20°C hysteresis - disables DRVCC and forces OUT low to prevent permanent damage during overload. |
Applications
| High-Frequency Synchronous Buck Converter | Isolated Flyback Primary-Side Driver |
|---|---|
|
Use Scenario: Driving high-side N-MOSFET in 500kHz–1MHz buck converter powering FPGA core voltage. IC Role / Device Role: High-current, low-delay gate driver delivering 6A peak to charge/discharge 100nC gate capacitance within 30ns. Use Value: Enables use of low-RDS(ON) MOSFETs without external boost circuitry, reducing conduction losses by >15% versus 5V-only drivers. |
Use Scenario: Driving primary-side N-MOSFET in isolated flyback with optocoupler feedback and current-mode control. IC Role / Device Role: Isolates controller logic from high dv/dt drain node while providing robust gate drive and blanking for accurate current sensing. Use Value: BLANK pin synchronizes with MOSFET turn-on to suppress PCB trace ringing, improving current-sense accuracy by >20% at 200kHz. |
| Industrial Motor Gate Driver | High-Voltage Charge Pump Controller |
|
Use Scenario: Driving half-bridge N-MOSFETs in 24V DC motor control with PWM frequencies up to 40kHz. IC Role / Device Role: Provides rail-to-rail gate drive (up to 8V) and fast turn-off (8ns fall time) to minimize shoot-through risk in bridge configurations. Use Value: 0.35Ω pull-down resistance ensures sub-100ns turn-off even with 20nH gate loop inductance, preventing destructive cross-conduction. |
Use Scenario: Driving flying capacitor switches in 40V–100V charge pump for LED backlight or sensor bias supply. IC Role / Device Role: Delivers high peak current to rapidly charge/discharge large flying capacitors (≥100nF) at high efficiency. Use Value: 6A peak output sustains >95% charge transfer efficiency at 300kHz switching, reducing required capacitor size by 3× versus 2A drivers. |
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 | 4A peak output, no programmable DRVCC, no blanking output, SO-8 only | Lacks adjustable gate voltage and blanking; suitable only for fixed 5V gate drive and simpler current sensing. | Choose when DRVCC regulation and blanking are unnecessary and cost sensitivity outweighs performance headroom. |
| UCC27531DBVR | 5A peak output, 5V fixed gate drive, no blanking, no UVLO on FB, SOT-23-6 | No gate voltage adjustment or blanking; smaller package limits thermal handling at 6A peaks. | Select for space-constrained designs where 5A peak suffices and external blanking can be implemented in controller. |
Compared with LM5113SDX/NOPB and UCC27531DBVR, the LTC4441EMSE#PBF uniquely combines 6A drive strength, programmable 5V–8V gate voltage, and integrated blanking-enabling higher efficiency, better EMI immunity, and tighter current-sense timing in demanding high-frequency power stages.
Availability
LTC4441EMSE#PBF is available at Aetrix Electronics and suitable for high-frequency synchronous buck converters, isolated flyback primary-side drivers, industrial motor gate drivers, and high-voltage charge pump controllers requiring stable component supply and guaranteed long-term availability.
Supply support for LTC4441EMSE#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, Inc. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and power management semiconductors for precision signal chain and power applications.
The LTC4441EMSE#PBF belongs to Linear's high-speed power MOSFET driver product line, designed specifically for high-efficiency, high-frequency DC/DC conversion in industrial, telecom, and computing power systems.
FAQ
What is the maximum allowable VIN voltage for the LTC4441EMSE#PBF?
The absolute maximum VIN rating for the LTC4441EMSE#PBF is 28V. However, continuous operation above 25V is not recommended due to increased DRVCC regulator power dissipation and thermal stress. At VIN = 25V and DRVCC = 8V, dropout voltage exceeds 1.5V, raising junction temperature significantly unless board-level thermal design is optimized.
Does the LTC4441EMSE#PBF support negative voltage on the IN pin?
Yes, the LTC4441EMSE#PBF IN pin tolerates –15V to +15V, enabling direct connection to signals that swing below ground-such as transformer-coupled gate drive outputs or isolated logic interfaces-without level-shifting circuitry.
How is the blanking time set on the LTC4441EMSE#PBF?
The blanking time on the LTC4441EMSE#PBF is set by connecting a resistor (RBLANK) from Pin 3 (RBLANK) to SGND. A 200kΩ resistor yields ~200ns blanking; lower values reduce time (down to ~75ns minimum). Leaving RBLANK floating disables the BLANK function entirely.
Can the LTC4441EMSE#PBF drive both high-side and low-side N-MOSFETs in a half-bridge?
The LTC4441EMSE#PBF is optimized for high-side N-MOSFET drive in bootstrap or isolated configurations. It lacks built-in high-side level shifting and cannot directly drive low-side N-MOSFETs referenced to power ground without external isolation. For half-bridge use, pair it with a dedicated low-side driver like the LTC4441-1 or complementary driver IC.
What is the purpose of the exposed pad on the LTC4441EMSE#PBF MSOP package?
The exposed pad (Pin 11) on the LTC4441EMSE#PBF is electrically and thermally connected to GND. It must be soldered to a PCB copper pour to achieve the specified θJA = 38°C/W. Failure to do so increases thermal resistance by >2×, risking thermal shutdown under 6A peak loads.
LTC4441EMSE#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- 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:
- 10-MSOP-EP
LTC4441EMSE#PBF FAQ
1.How can I place an order for LTC4441EMSE#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4441EMSE#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 LTC4441EMSE#PBF reliable?
The price and inventory of LTC4441EMSE#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC4441EMSE#PBF is usually 5 days.
3.What payment methods are accepted for LTC4441EMSE#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4441EMSE#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4441EMSE#PBF?
LTC4441EMSE#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4441EMSE#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 LTC4441EMSE#PBF?
For technical support, including LTC4441EMSE#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4441EMSE#PBF requirements.
6.How does Aetrix verify that LTC4441EMSE#PBF is sourced from the original manufacturer or authorized distributors?
All LTC4441EMSE#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 LTC4441EMSE#PBF meets industry standards.
7.What is the process for return or replacement of LTC4441EMSE#PBF?
All LTC4441EMSE#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4441EMSE#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 LTC4441EMSE#PBF part is unused and in its original packaging.
Return procedure for LTC4441EMSE#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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