参数资料
型号: L7980A
厂商: STMICROELECTRONICS
元件分类: 稳压器
英文描述: 3.5 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO8
封装: ROHS COMPLIANT, HSOP-8
文件页数: 6/44页
文件大小: 1247K
代理商: L7980A
Functional description
L7980
14/44
Doc ID 15181 Rev 3
Figure 8.
Overcurrent protection strategy
5.5
Enable function
The enable feature allows to put in stand-by mode the device.With EN pin lower than 0.3V
the device is disabled and the power consumption is reduced to less than 30 A. With EN
pin lower than 1.2 V, the device is enabled. If the EN pin is left floating, an internal pull down
ensures that the voltage at the pin reaches the inhibit threshold and the device is disabled.
The pin is also VCC compatible.
5.6
Hysteretic thermal shutdown
The thermal shutdown block generates a signal that turns off the power stage if the junction
temperature goes above 150°C. Once the junction temperature goes back to about 130°C,
the device restarts in normal operation. The sensing element is very close to the PDMOS
area, so ensuring an accurate and fast temperature detection.
相关PDF资料
PDF描述
L7980 3.5 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO8
L7980TR 3.5 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO8
L7981ATR SWITCHING REGULATOR, DSO8
L7981TR SWITCHING REGULATOR, DSO8
L8219LP STEPPER MOTOR CONTROLLER, 2.5 A, PDSO28
相关代理商/技术参数
参数描述
L7980ATR 功能描述:直流/直流开关转换器 2 A Step-Down Reg 4.5V to 28V 250 kHz RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
L7980TR 功能描述:直流/直流开关转换器 2A DC 4.5 V to 28 V Adj 0.6V 250 kHz RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
L7981 功能描述:直流/直流开关调节器 3A Step-Down Reg 3A DC 4.5-28V 250Khz RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5
L7981A 制造商:STMicroelectronics 功能描述:POWER CONVERSION - Rail/Tube 制造商:STMicroelectronics 功能描述:3A Step-Down Reg 3.7A 4.5 to 28V 1MHz 制造商:ST 功能描述:3A STEP-DOWN SWITCHING REGULATOR
L7981ATR 功能描述:直流/直流开关调节器 3 A Step-Down Reg 4.5V to 28V 250 kHz RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5