MIC5018中文资料High Side IttyBitty™ MOSFET Gate Driver数据手册Microchip规格书

描述 Description

The MIC5018 IttyBitty™ high-side MOSFET gate driver is designed to switch an N-channel enhancement-type MOSFET from a TTL compatible control signal in high- or low-side switch applications. This gate driver features the tiny 4-lead SOT-143 package.The MIC5018 is powered from a 2.7 V to 9 V supply and features extremely low off-state supply current. An internal charge pump drives the gate output higher than the driver supply voltage and can sustain the gate voltage indefinitely. An internal zener diode limits the gate-to-source voltage to a safe level for standard N-channel MOSFETs.In high-side configurations, the source voltage of the MOSFET approaches the supply voltage when switched on. To keep the MOSFET turned on, the MIC5018's output drives the MOSFET gate voltage higher than the supply voltage. In a typical high-side configuration, the driver is powered from the load supply voltage. Under some conditions, the MIC5018 and MOSFET can switch a load voltage that is slightly higher than the driver supply voltage.In a low-side configuration, the driver can control a MOSFET that switches any voltage up to the rating of the MOSFET. The gate output voltage is higher than the typical 3.3 V or 5 V logic supply and can fully enhance a standard MOSFET.The MIC5018 is available in the SOT-143 package and is rated for -40°C to 85°C ambient temperature range.

特性 Features

• 2.7 V to 9 V operation
• 150 µA typical supply current at 5 V supply
• ≤ 1 µA typical standby (off) current
• Charge pump for high-side low-voltage applications
• Internal zener diode gate-to-ground MOSFET protection
• Operates in low- and high-side configurations
• TTL compatible input
• ESD protected

简介

MIC5018属于集成电路（IC）的栅极驱动器。由Microchip制造生产的MIC5018栅极驱动器栅极驱动器电源管理集成电路 (PMIC) 可用于提供隔离、放大、参考位移、自举或其他必要功能，这些功能可将来自电源转换应用中控制设备的信号连接到电源被控制通过的半导体设备（通常为 FET 或 IGBT）。任何特定设备提供的确切功能各不相同，但与它适合驱动的半导体配置相关。