LTC4444HMS8E#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
LTC4444HMS8E#PBF is an Analog Devices automotive-grade half-bridge MOSFET gate driver in an 8-pin MSOP-EP package. Drives high-side and low-side N-channel MOSFETs with 3 A peak output, 4.5 V to 15 V bootstrap supply, and Schmitt-trigger inputs. Available in stock worldwide.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LTC4444HMS8E#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.7900(MOQ 19)
- Temp Range
- -40.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LTC4444HMS8E#PBF?
- 3 A peak source/sink gate drive current enables fast switching of large power N-channel MOSFETs, reducing switching losses in high-frequency converters
- Automotive-qualified (AEC-Q100 Grade 1) half-bridge driver rated for -40 °C to +125 °C junction temperature, suitable for under-hood 48 V EV subsystems
- 4.5 V to 15 V input logic compatibility with Schmitt-trigger inputs rejects glitches and allows direct interface to 3.3 V or 5 V PWM controllers
- Integrated bootstrap diode and charge pump support continuous high-side operation without an external bootstrap diode, reducing BOM count
- Compact 8-pin MSOP-EP package with exposed thermal pad improves heat dissipation in dense half-bridge and synchronous buck converter layouts
What is LTC4444HMS8E#PBF used for?
The LTC4444HMS8E#PBF is designed for automotive and industrial half-bridge gate driver applications including synchronous DC-DC buck converters, class-D audio amplifiers, and bi-directional DC motor drives operating from 12 V to 48 V rails. Its AEC-Q100 Grade 1 automotive qualification and -40 °C to +125 °C temperature range make it suitable for EV battery management, electric power steering, and start-stop system converters where reliability under extreme temperature cycling is mandatory. Industrial applications include programmable logic controllers, servo drive pre-drivers, and UPS half-bridge stages where the 3 A peak gate current and fast propagation times below 20 ns minimize switching losses at frequencies above 100 kHz.
What are the specifications of LTC4444HMS8E#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1662 |
| YTEOL | 10 |
| High Side Driver | YES |
| Input Characteristics | SCHMITT TRIGGER |
| Interface IC Type | HALF BRIDGE BASED MOSFET DRIVER |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Characteristics | STANDARD |
| Output Peak Current Limit-Nom | 2.5A |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Qualification Status | Not Qualified |
| Supply Current-Max | 0.55mA |
| Supply Voltage-Max | 13.5V |
| Supply Voltage-Min | 7.2V |
| Supply Voltage-Nom | 12V |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Turn-off Time | 0.045 µs |
| Turn-on Time | 0.05 µs |
| ## LTC4444HMS8E#PBF Alternates Showing results | Image |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Where can I find the LTC4444HMS8E#PBF datasheet?
LTC4444HMS8E#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LTC4444HMS8E#PBF?
Compatible alternatives and drop-in replacements for LTC4444HMS8E#PBF:
suggested
suggested
suggested
Frequently Asked Questions
What peak gate drive current can the LTC4444HMS8E#PBF source and sink, and why does this matter for switching losses?
The LTC4444HMS8E#PBF delivers 3 A peak source current and 3 A peak sink current to the gate of a power MOSFET. A 3 A gate drive slews the gate capacitance of a typical 10 nC MOSFET in roughly 3 ns, reducing the cross-conduction time in a half-bridge and cutting switching losses at operating frequencies above 100 kHz in automotive DC-DC converters and class-D audio stages.
What automotive qualification level does the LTC4444HMS8E#PBF carry and what temperature range does it support?
The LTC4444HMS8E#PBF is qualified to AEC-Q100 Grade 1, meaning it has passed automotive reliability stress tests including high-temperature operating life at +125 °C junction and thermal cycling from -40 °C to +125 °C. This rating covers under-hood powertrain applications in electric and hybrid vehicles, such as 48 V mild-hybrid DC-DC converters and electric power steering gate driver stages.
What input voltage range and logic compatibility does the LTC4444HMS8E#PBF offer for PWM controller interfacing?
The LTC4444HMS8E#PBF accepts logic-level inputs from 4.5 V to 15 V supply with Schmitt-trigger input conditioning, allowing direct connection to both 3.3 V and 5 V PWM controller outputs without level-shift circuitry. The Schmitt-trigger hysteresis also rejects noise glitches on the input lines common in noisy automotive power stages, preventing false switching events that could cause shoot-through in the power bridge.
How does the bootstrap circuit in the LTC4444HMS8E#PBF simplify high-side MOSFET drive in synchronous buck designs?
The LTC4444HMS8E#PBF integrates an internal bootstrap diode that charges a small external bootstrap capacitor (typically 100 nF) to VCC during the low-side on-time, providing a floating supply voltage of up to 15 V above the switch node to drive the high-side N-channel MOSFET's gate. This eliminates the need for a separate discrete bootstrap Schottky diode and reduces component count in synchronous buck converter designs targeting 100 kHz to 500 kHz switching frequencies.
For a 48 V automotive half-bridge design, how does the LTC4444HMS8E#PBF compare to an optocoupler-based gate drive approach?
Compared to optocoupler-based gate drivers, the LTC4444HMS8E#PBF achieves propagation delays below 20 ns versus typical 100 ns to 1 µs for optocouplers, enabling tighter dead-time control and higher PWM frequencies up to 1 MHz in the 48 V half-bridge. The AEC-Q100 Grade 1 single-IC solution also eliminates the LED drive circuit, reduces the isolated power supply requirement for the optocoupler LED side, and occupies less than 50% of the PCB area compared to a discrete optocoupler plus driver approach.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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