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參數(shù)資料
| 型號： | LV58761MX |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, PDSO8 |
| 封裝： | 0.200 INCH, MFP-8 |
| 文件頁數(shù)： | 4/7頁 |
| 文件大?。?/td> | 635K |
| 代理商： | LV58761MX |
LV58761MX
No.A1964-4/7
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 0.022uF 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) Rb
proves effective.
VIN
BOOT
SW
Short protection
circuit
Output MOS
2
VIN
Input Voltage Pin. Connect substantially large (10uF 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.
4
GND
Ground pin.
5
FB
Feedback pin.
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 = 0.8V
Example: 3.3V output voltage
(See, Block Diagram and Application example)
VOUT = 0.8 × { 1 +
(27k + 4.3k)
10k
}
=3.304V
SS
VREF
0.8V
VIN
FB
Internal Regulation line
8
SS
Soft start pin.
Sets the soft start time by means of the built-in 5
μA source
voltage and external soft start capacity. The soft start capacity
CSS can be set as follows:
CSS = 5μA ×
Tss
Vref
Where, Tss is the soft start time and Vref is the reference
voltage.
Example:2.4ms soft start time achieved
CSS = 5μA ×
2.4ms
0.8V = 0.015μF
6
COMP
Phase compensation pin.
Connects with the phase compensation external capacitance and
resistance of DC/DC converter close loop.
COMP
VIN
Short
protection
circuit
Internal Reguretion line
7
EN
Enable pin.
Converter enabled when set to the HIGH voltage and disabled
when GND or OPEN state.
EN
VIN
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