UCC3918 - 0-4A、3-6V 低 RDSON 单路热插拔 IC 高侧 MOSFET、商用温度

UCC3918是TI德州仪器公司的一款eFuses（集成FET）产品，UCC3918是0-4A、3-6V 低 RDSON 单路热插拔 IC 高侧 MOSFET、商用温度，本站介绍了UCC3918的封装应用图解、特点和优点、功能等，并给出了与UCC3918相关的TI元器件型号供参考。

UCC3918 - 0-4A、3-6V 低 RDSON 单路热插拔 IC 高侧 MOSFET、商用温度 - eFuses（集成FET） - 保护、监控和热插拔 - 德州仪器

产品描述

The UCC3918 low on-resistance hot swap power manager provides complete power management, hot swap capability, and circuit breaker functions. The only components needed to operate the device, other than supply bypassing, are a timing capacitor, and two programming resistors. All control and housekeeping functions are integrated, and externally programmable. These include the fault current level, maximum output sourcing current, maximum fault time, and startup delay. In the event of a constant fault, the internal fixed 3%duty cycle ratio limits the average output power. The IFAULT pin allows linear programming of the fault level current from 0 A to 4 A.

Fast overload protection is accomplished by an additional overload comparator. Its threshold is internally set above the maximum sourcing current limit setting. In the event of a short circuit or extreme current condition, this comparator is tripped, shutting down the output. This function is needed since the maximum sourcing current limit loop has a finite bandwidth.

When the output current is below the fault level, the output MOSFET is switched on with a nominal resistance of 0.075 . When the output current exceeds the fault level or the maximum sourcing level, the output remains on, but the fault timer starts charging a capacitor connected to the CT pin (CT). Once CT charges to a preset threshold, the switch is turned off, and remains off for 30 times the programmed fault time. When the output current reaches the maximum sourcing level, the MOSFET transitions from a switch to a constant current source.

The UCC3918 is designed for unidirectional current flow, emulating an ideal diode in series with the power switch. This feature is particularly attractive in applications where many devices are powering a common bus, such as with SCSI termintation power (Termpwr). The UCC3918 can also be put into the sleep mode, drawing only 1 uA of supply current.

Other features include an open-drain fault output indicator, thermal shutdown, undervoltage lockout, 3 V to 6 V operation, and a low thermal resistance small-outline power package.

产品特性

Integrated 0.075- Power MOSFET
3 V to 6 V Operation
External Analog Control of Fault Current from 0 A to 4 A
Independent Analog Control of Current Limit Up to 5 A
Fast Overload Protection
Unidirectional Switch
Minimal External Components
1-uA ICC When Disabled
Programmable On Time
Programmable Start Delay
Fixed 3% Duty Cycle

下面可能是您感兴趣的TI德州仪器公司eFuses（集成FET）元器件

TI公司产品现货专家，订购TI公司产品不限最低起订量，TI芯片大陆现货即时发货，香港库存3-5天发货，海外库存7-10天发货

寻找全球TI代理商现货货源 - TI公司（德州仪器）电子元件在线订购

UCC3918 - 0-4A、3-6V 低 RDSON 单路热插拔 IC 高侧 MOSFET、商用 温度

UCC3918 - 0-4A、3-6V 低 RDSON 单路热插拔 IC 高侧 MOSFET、商用温度