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参数资料
| 型号： | L6911E |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | SO-20 |
| 文件页数： | 13/34页 |
| 文件大小： | 558K |
| 代理商： | L6911E |
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Device description
L6911E
20/34
Considering the previous relationships R2, R3, R8 and R9 may be determined in order to
obtain the desired droop effect as follow:
●
Choose a value for R2 in the range of hundreds of K
to obtain realistic values for the
other components.
●
From the above equations, it results:
Equation 15
Equation 16
Where IMAX is the maximum output current.
●
The component R3 must be chosen in order to obtain R3 << R8//R9 to permit these
and successive simplifications.
Therefore, with the droop function the output voltage decreases as the load current
increases, so the DC output impedance is equal to a resistance ROUT. It is easy to verify that
the output voltage deviation under load transient is minimum when the output impedance is
constant with frequency.
R8
V
+
R2
V
PROG
-----------------------
R
L
I
MAX
V
DROOP
--------------------------
=
R9
R8
=
V
DROOP
R
L
I
MAX
--------------------------
1
V
DROOP
R
L
I
MAX
--------------------------
+
------------------------------------
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L6911E_07 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5-Bit programmable step down controller with synchronous rectification |
| L6911ETR | 功能描述:DC/DC 开关控制器 5B PROGRAMMABLE STEP DOWN CONTROLLER RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| L6912-2 | 制造商:Thomas & Betts 功能描述:1/2 CORD GRIP CONNECTOR,2/BG |
| L6913-1 | 制造商:Thomas & Betts 功能描述:1/2 CORD GRIP CONNECTOR,1/BG |
| L6913-2 | 制造商:Thomas & Betts 功能描述:1/2 CORD GRIP CONNECTOR,2/BG |
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