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参数资料
| 型号： | LV5781 |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, 225 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封装： | 0.225 INCH, SSOP-14 |
| 文件页数： | 5/7页 |
| 文件大小： | 78K |
| 代理商： | LV5781 |
LV5781
No.A0663-5/7
Pin Functions
Pin No.
Pin name
Description
1
FB_GND
GND of output voltage setting pins FB0 and FB2. It is connected to GND for use when pin FB2 is used.
2
ENABLE
Output ON/OFF with an active-high polarity. When set to L, the current consumption is reduced to 10
A or
less.
3
SS
Soft start time constant setting. The charge current is set to approx. 6.5
A and when a capacitor of 0.1F is
connected between this pin and GND, the output rises in approx. 12ms.
4
FB1
Test pin for verifying the internal reference voltage. It must be set to open for actual use.
5, 8, 10
VIN
Power input. It is used with voltages ranging from 4.5V to 6V.
6, 9
SW
Inductor drive output
7
PGND
Power GND pin. This is the output GND. It is connected so that where at all possible, no impedance is
shared with other GND pins (GND, FB_GND).
11
CBOOT
For generating the gate voltage of the internal high-side n-channel MOS transistor. A capacitor with a
capacitance of at least 0.1
F (max. 2.2F) is connected between this pin and the SW pin for use.
12
OERRAMP
Transconductance-type Error_Amp output. An integration constant is provided between this pin and GND to
implement phase compensation.
13
FB2
Used to feed back the output voltage to this pin when the output voltage is to be set to 3.3V. In such a case,
FB_GND is connected to GND. Refer to application circuit 1.
14
FB0
When the output voltage is to be set to a desired value, connect resistors between FB0 and GND and
between FB0 and VOUT to feed back the output voltage to this pin. In such a case, leave FB_GND and
FB2 open. Refer to application circuit 2.
Heat sink fin
GND
Analog GND (connected to GND).
Input Equivalent Circuits
Pin No.
Pin Name
Equivalent Circuit
5, 8, 10
GND
VIN
1
4
13
14
FB_GND
FB1
FB2
FB0
Continued on next page
FB_GND
VIN
GND
FB1
FB0
FB2
54.5k
118k
50k
116k
VIN
GND
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LV5781-TLM-E | 功能描述:直流/直流开关转换器 3A STEP-DOWN CONVERTER 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 |
| LV5803M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Bi-CMOS IC Step-down Switching Regulator |
| LV5803M-TE-L-E | 功能描述:直流/直流开关调节器 SWITCHING REGULATOR 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 |
| LV58061MX | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Step-down Switching Regulator |
| LV58061MX-TLM-H | 功能描述:直流/直流开关调节器 SWITCHING REGULATOR 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 |
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