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参数资料
| 型号： | LV5806MX |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, 444 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | 0.200 INCH, MFP-8 |
| 文件页数： | 4/5页 |
| 文件大小： | 0K |
| 代理商： | LV5806MX |
LV5806MX
No.A1513-4/5
Pin Function
Pin No.
Pin name
Function
Equivalent circuit
1
BOOT
Upper MOS transistor boot strap capacitance
connection pin.
Connect the boot capacitance of about 0.022
μF
between SW pins.
To protect the SW pin’s absolute maximum rating, to
ensure stable operation, and to eliminate noise, the
boot capacitance serial resistance (about 100
Ω) Rb
proves effective.
Considerations for design :
Insertion of serial beads in the Schottky diode to
eliminate noise may cause occurrence of the
negative voltage beyond the absolute maximum
rating at the SW pin, resulting in failure of normal
operation. Accordingly, eliminate noise not by
inserting above beads, but by means of the BOOT
resistance.
2
VIN
Input voltage pin.
Connect substantially large (20
μF or more)
capacitance between this pin and GND.
3
SW
Power switch pin.
Connect the output LC filter. Connect the above
capacitance between this pin and BOOT pin.
SW
CBOOT
Hi side MOS
Low side MOS
VIN
4
GND
Ground pin.
5
FB
Feedback pin.
Sets 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 = 0.8V
Example : 3.3V output voltage
(See Block Diagram and Sample Application Circuit)
VOUT = 0.8 × {1+
(27k + 4.3k)
10k
}
= 3.304V
8
SS
Soft start pin.
Sets the soft start time by means of the built-in 10
μA
source voltage and external soft start capacity. The
soft start capacity C6 can be set as follows :
C6 = 10
μA ×
Tss
Vref
Where, Tss is the soft start time and Vref is the
reference voltage.
Example : 1.2ms soft start time achieved
C6 = 10
μA ×
1.2msec
0.8V
= 0.015
μF
10
μA
Internal regulation line
VIN
FB
SS
VREF
0.8V
6
COMP
Phase compensation pin.
Connects with the phase compensation external
capacitance and resistance of DCDC converter close
loop.
Internal regulation line
Clamp circuit
VIN
COMP
Continued on next page.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LV58072MX-TLM-H | 制造商:Sony Semiconductor Solutions Division 功能描述: |
| LV5807MX | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Step-down Switching Regulator |
| LV5807MX-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 |
| LV58082MX | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Step-down Switching Regulator |
| LV5808MX | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Bi-CMOS IC Step-down Switching Regulator |
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