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参数资料
| 型号： | LV5856MX |
| 元件分类： | 稳压器 |
| 英文描述： | 4 A SWITCHING REGULATOR, 340 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | 0.220 INCH, MFP-8 |
| 文件页数： | 4/5页 |
| 文件大小： | 159K |
| 代理商： | LV5856MX |
LV5856MX
Pin Function
Pin No.
Pin name
Function
Equivalent circuit
Upper MOS transistor boot strap capacitance connection pin.
Connect the boot capacitance of about 0.1uF between SW pins.
To protect the SW pin’s absolute maximum rating , to ensure
stable
No.A1639-4/5
1
BOOT
operation, and to eliminate noise , the boot capacitance serial
resistance (about 15) Rb
proves effective.
2
VIN
Input Voltage Pin. Connect substantially large (10uF 2 parallel or
more) capacitance between this pin and GND.
VIN
BOOT
SW
High side MOS
Low side MOS
Discharge
Power Switch pin.
3
SW
Connect the output LC filter.
Connect the above capacitance between this pin and BOOT pin.
The discharge transistor for a Soft-Stop is connected with this
terminal (typcal 35). It turns it on by either EN=L, UVLO or a
thermal shutdown.
4
GND
Ground pin.
Feedback pin.
5
FB
Set the output voltage by means of split resistor in the section of
the output voltage
VOUT-FB-GND. VOUT setting is made as calculated below.
VOUT = Vref × { 1 +
(R1 + R10)
R3
}
Vref = 0.923V
Example: 3.3V output voltage
(See, Block Diagram and Application example)
VOUT = 0.923 × { 1 +
(22k + 3.9k)
10k
}
=3.314V
SS
VREF
0.923V
VIN
FB
Soft start pin.
8
SS
Sets the soft start time by means of the built-in 6
μA source
voltage and external soft start capacity. The soft start capacity C6
can be set as follows:
C6 = 6
μA ×
Tss
Vref
Where, Tss is the soft start time and Vref is the reference
voltage.
Example:2.3ms soft start time achieved
C6 = 6
μA ×
2.3ms
0.923V = 0.015μF
Phase compensation pin.
6
COMP
VIN
Connects with the phase compensation external capacitance and
resistance of DC/DC converter close loop.
Enable pin.
7
EN
VIN
2pF
Converter enabled when set to the HIGH voltage and disabled
when LOW voltage or OPEN state.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LV5856MX-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 |
| LV5857MX | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Step-down Switching Regulator |
| LV5857MX-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 |
| LV5858M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Step-down Switching Regulator |
| LV58761MX | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Step-down Switching Regulator |
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