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参数资料
| 型号： | L6668 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 0.8 A SWITCHING CONTROLLER, 105 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | LEAD FREE, SOP-16 |
| 文件页数： | 10/23页 |
| 文件大小： | 720K |
| 代理商： | L6668 |
L6668
18/23
Figure 43 shows a timing diagram where the PFC_STOP function operation is illustrated under different
operating conditions.
Figure 42. How the L6668 can switch off a PFC controller at light load
Figure 43. Operation of PFC_STOP function
Figure 44. Operation after DIS pin activation: timing diagram
L6668
PFC_STOP
14
16
Vcc
10 k
BC557
2.2 k
PFC
controller
Vcc
8.2 V
L6668
PFC_STOP
14
16
Vcc
10 k
BC557
2.2 k
PFC
controller
Vcc
8.2 V
Vcc
PFC_STOP
OUT
VccON
VccOFF
t
PFC
Gate
Drive
t
COMP
2.2V
2.7V
Start-up
Full-load
Light-load
Full-load
Vcc
OUT
Vin
VccON
VccON -0.5
t
2.2V
VccOFF
DIS
Vccrest
VHVstart
HV generator is turned on
Disable latch is reset here
HV generator is disabled here
Input source is removed here
Vcc
OUT
Vin
VccON
VccON -0.5
t
2.2V
VccOFF
DIS
Vccrest
VHVstart
HV generator is turned on
Disable latch is reset here
HV generator is disabled here
Input source is removed here
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L6668_06 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:SMART PRIMARY CONTROLLER |
| L6668B2 | 功能描述:电流型 PWM 控制器 POWER SUPPLY RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| L6668TR | 功能描述:电流型 PWM 控制器 SMART CONTROLLER RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| L667 | 制造商:BURNDY 功能描述:L-DIE |
| L-667 | 制造商:RHOMBUS-IND 制造商全称:Rhombus Industries Inc. 功能描述:Common Mode Inductor For DC/DC Power supply |
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