仕様
| 属性 | 値 |
| Package / Case | Tube |
| Part Status | Obsolete |
| Driven Configuration | Half-Bridge |
| Channel Type | Synchronous |
| Number of Drivers | 2 |
| Gate Type | N-Channel MOSFET |
| Voltage - Supply | 4V ~ 6.5V |
| Logic Voltage - VILVIH | 3V, 6.5V |
| Current - Peak Output(Source Sink) | 3.2A, 4.5A |
| Input Type | Non-Inverting |
| High Side Voltage - Max(Bootstrap) | 42 V |
| Rise / Fall Time(Typ) | 8ns, 7ns |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
概要
Description
The LTC4449IDCB is a high-speed, high-voltage MOSFET driver designed by Analog Devices, primarily used for driving N-channel MOSFETs. It is optimized for synchronous rectifier applications and can operate with input voltages up to 38V. The device features a robust 6A peak pull-up and 3A peak pull-down drive capabilities, ensuring fast switching speeds and improved efficiency in power conversion applications.
The LTC4449IDCB is designed to minimize switching losses with its low propagation delay and fast rise and fall times. It also includes adaptive shoot-through protection, preventing simultaneous conduction of the high-side and low-side MOSFETs, which enhances the reliability and efficiency of the power supply.
Additionally, the device comes in a compact DFN package, making it suitable for space-constrained applications. It is widely used in DC/DC converters, motor drives, and other power management systems where efficient and reliable MOSFET driving is crucial. The LTC4449IDCB ensures stable performance across a wide temperature range, which is essential for industrial and automotive applications.
The LTC4449IDCB is designed to minimize switching losses with its low propagation delay and fast rise and fall times. It also includes adaptive shoot-through protection, preventing simultaneous conduction of the high-side and low-side MOSFETs, which enhances the reliability and efficiency of the power supply.
Additionally, the device comes in a compact DFN package, making it suitable for space-constrained applications. It is widely used in DC/DC converters, motor drives, and other power management systems where efficient and reliable MOSFET driving is crucial. The LTC4449IDCB ensures stable performance across a wide temperature range, which is essential for industrial and automotive applications.
Equivalent
The LTC4449IDCB is a high-speed synchronous N-channel MOSFET driver. Equivalent products with similar functionalities include:
1. TI's UCC27211A - High-Speed Synchronous MOSFET Driver.
2. ON Semiconductor's NCP81151 - Synchronous Buck MOSFET Driver.
3. Microchip's MCP14E9 - High-Speed MOSFET Driver.
4. Infineon's 1ED44173N01B - High-Side/Low-Side Driver IC.
Always check the specific requirements of your application, as variations in voltage, current capability, and timing characteristics may exist.
1. TI's UCC27211A - High-Speed Synchronous MOSFET Driver.
2. ON Semiconductor's NCP81151 - Synchronous Buck MOSFET Driver.
3. Microchip's MCP14E9 - High-Speed MOSFET Driver.
4. Infineon's 1ED44173N01B - High-Side/Low-Side Driver IC.
Always check the specific requirements of your application, as variations in voltage, current capability, and timing characteristics may exist.
Features
The LTC4449IDCB is a high-speed, high-frequency N-channel MOSFET gate driver from Analog Devices. Key features include:
1. High-Speed Operation: The driver supports frequencies up to 8 MHz, making it suitable for high-frequency applications.
2. Rail-to-Rail Outputs: It provides rail-to-rail output swings, ensuring full enhancement of power MOSFETs.
3. Wide Input Voltage Range: The LTC4449IDCB operates with input supply voltages ranging from 4.5V to 18V.
4. Strong Drive Capability: It features a peak pull-up current of 1.5A and a peak pull-down current of 3A, ensuring rapid switching of MOSFETs.
5. Low Propagation Delay: The device offers fast propagation delays, critical for minimizing switching losses in high-frequency applications.
6. Undervoltage Lockout (UVLO): Built-in UVLO protects the MOSFET from operating at insufficient gate drive voltage.
7. Overtemperature Protection: It includes thermal shutdown protection to prevent damage from overheating.
8. Compact Package: The driver is available in a compact DFN package, suitable for space-constrained designs.
These features make the LTC4449IDCB ideal for applications such as power supply circuits, DC-DC converters, and other high-speed switching applications.
1. High-Speed Operation: The driver supports frequencies up to 8 MHz, making it suitable for high-frequency applications.
2. Rail-to-Rail Outputs: It provides rail-to-rail output swings, ensuring full enhancement of power MOSFETs.
3. Wide Input Voltage Range: The LTC4449IDCB operates with input supply voltages ranging from 4.5V to 18V.
4. Strong Drive Capability: It features a peak pull-up current of 1.5A and a peak pull-down current of 3A, ensuring rapid switching of MOSFETs.
5. Low Propagation Delay: The device offers fast propagation delays, critical for minimizing switching losses in high-frequency applications.
6. Undervoltage Lockout (UVLO): Built-in UVLO protects the MOSFET from operating at insufficient gate drive voltage.
7. Overtemperature Protection: It includes thermal shutdown protection to prevent damage from overheating.
8. Compact Package: The driver is available in a compact DFN package, suitable for space-constrained designs.
These features make the LTC4449IDCB ideal for applications such as power supply circuits, DC-DC converters, and other high-speed switching applications.
Pinout
The LTC4449IDCB is a high-speed, high-voltage gate driver from Analog Devices designed to drive N-channel MOSFETs. It comes in a 2mm × 3mm DFN package and has a total of 8 pins. Here are the functions of each pin:
1. INP (Pin 1): Input for PWM signal.
2. INN (Pin 2): Inverted input for PWM signal.
3. VCC (Pin 3): Supply voltage for the driver.
4. GND (Pin 4): Ground connection.
5. OUT (Pin 5): Gate drive output.
6. BOOST (Pin 6): Boost supply pin for high-side drive.
7. SW (Pin 7): Switch node connection, referenced to the source of the high-side MOSFET.
8. NC (Pin 8): No internal connection, typically left unconnected.
The LTC4449IDCB is designed for synchronous rectification and can drive both high-side and low-side MOSFETs, making it suitable for applications in DC/DC converters and power supplies.
1. INP (Pin 1): Input for PWM signal.
2. INN (Pin 2): Inverted input for PWM signal.
3. VCC (Pin 3): Supply voltage for the driver.
4. GND (Pin 4): Ground connection.
5. OUT (Pin 5): Gate drive output.
6. BOOST (Pin 6): Boost supply pin for high-side drive.
7. SW (Pin 7): Switch node connection, referenced to the source of the high-side MOSFET.
8. NC (Pin 8): No internal connection, typically left unconnected.
The LTC4449IDCB is designed for synchronous rectification and can drive both high-side and low-side MOSFETs, making it suitable for applications in DC/DC converters and power supplies.
Manufacturer
The LTC4449IDCB is manufactured by Analog Devices, Inc. Analog Devices is a company that specializes in the design and manufacturing of analog, mixed-signal, and digital signal processing (DSP) integrated circuits. These components are used in a wide range of electronic equipment, including those in the industrial, automotive, consumer, and communication sectors. The company is known for its innovation in the field of semiconductors and provides solutions that enhance the performance and efficiency of electronic systems.
Application
The LTC4449IDCB is a high-speed, high-frequency MOSFET driver used primarily in applications requiring fast switching and efficient power conversion. Key application areas include DC-DC converters, synchronous rectifiers in power supplies, motor drive inverters, and Class D amplifiers. It is well-suited for systems demanding high-side and low-side MOSFET gate driving, particularly in telecommunications, computing, and industrial power supply systems. Its capability to handle high voltage and deliver fast transition speeds makes it ideal for optimizing the performance and efficiency of switching power applications.
Package
The LTC4449IDCB is housed in a DFN (Dual Flat No-Lead) package type, specifically a 3mm x 3mm DFN-10 package. This package style offers a compact footprint and improved thermal performance, commonly used for power management applications.
