会社ブログについて Mingjiada Supply ADI LTC4442 And LTC4444 Series Synchronous N-Channel MOSFET Driver

Mingjiada Supply ADI LTC4442 And LTC4444 Series Synchronous N-Channel MOSFET Driver

Shenzhen Mingjiada Electronics Co., Ltd. — Long-term supplier of [ADI] LTC4442 and LTC4444 synchronous N-channel MOSFET drivers. This series of devices is primarily designed for synchronous rectification and power stage drive applications in switching power supplies. They can be used in conjunction with PWM controllers to drive N-channel MOSFETs in topologies such as synchronous buck converters and multi-phase converters, helping to improve power conversion efficiency and switching performance.

I. LTC4442 — High-Speed Synchronous N-Channel MOSFET Driver
1. Details: The LTC4442 is a high-frequency gate driver specifically designed to drive two N-channel MOSFETs utilising a synchronous buck DC/DC converter topology. Its robust driving capability reduces switching losses in MOSFETs with high gate capacitance.
The LTC4442 features a separate power supply for the input logic circuit to ensure matching with the signal swing of the controller IC. If the input signal is not in the driven state, the LTC4442 enters a shutdown mode that turns off both external MOSFETs. The input logic signals are internally level-shifted to the bootstrap supply, which can operate at voltages up to 42V above ground.
2. Key Features:
Wide VCC range: 6V to 9.5V
38V maximum input supply voltage
Adaptive short-circuit protection
2.4A peak pull-up current
5A peak pull-down current
8ns TG fall time driving a 3000pF load
12 ns TG rise time driving a 3000 pF load
Uses separate power supplies to match the PWM controller
Drives dual N-channel MOSFETs
Features under-voltage lockout
Thermally enhanced MSOP package
Models supplied by Mingjiada Electronics:
LTC4442EMS8
LTC4442EMS8E-1
LTC4442IMS8E
LTC4442IMS8E-1
The LTC4442 series is widely used in distributed power architectures, high-density power modules and other applications.

II. LTC4444 – High-Voltage Synchronous N-Channel MOSFET Driver
1. Details: The LTC4444 is a high-frequency, high-voltage gate driver capable of driving two N-channel MOSFETs using a single synchronous DC/DC converter and supply voltages up to 100 V. Its robust driving capability reduces switching losses in MOSFETs with high gate capacitance.
The LTC4444 is configured for two supply-independent inputs. Logic signals at the high-side input are internally level-shifted to a bootstrap supply, which can operate at voltages up to 114V above ground.
2. Key Features:
Bootstrap supply voltage up to 114V
Wide VCC voltage range: 7.2V to 13.5V
Adaptive turn-on protection
2.5A peak TG pull-up current
3A peak BG pull-up current
1.2Ω TG driver pull-down resistance
0.55Ω BG driver pull-down resistance
5ns TG fall time driving a 1nF load
8ns TG rise time driving a 1nF load
3ns BG fall time driving a 1nF load
6 ns BG rise time driving a 1 nF load
Capable of driving high-side and low-side N-channel MOSFETs
Undervoltage lockout function
Thermally enhanced 8-pin MSOP package

Models supplied by Mingjiada Electronics:
LTC4444EMS8E
LTC4444HMS8E
LTC4444IMS8E
LTC4444MPMS8E
The LTC4444 series is widely used in distributed power architectures, automotive power supplies, high-density power modules, telecommunications and other fields.

The LTC4442 and LTC4444 belong to the ADI / Linear Technology series of synchronous N-channel MOSFET drivers. These devices are typically used to drive synchronous N-channel MOSFETs; they are suitable for high-frequency switching power supply topologies and can be used in conjunction with a variety of PWM controllers.

For further information on the ADI LTC4442 / LTC4444 synchronous N-channel MOSFET drivers, please visit the Mingjiada Electronics website (https://www.integrated-ic.com/) to obtain quotations and check stock availability.