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參數(shù)資料
| 型號(hào)： | LV5254LG |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PBGA24 |
| 封裝： | 3 X 3 MM, FLGA-24 |
| 文件頁數(shù)： | 13/14頁 |
| 文件大小： | 136K |
| 代理商： | LV5254LG |
LV5254LG
No.A0584-8/14
Overcurrent Protection Operation
This IC includes a function that protects against overcurrent in VOUT. If the VOUT output is shorted and a large
current flows, the IC will latch and stop the output. To recover from this stopped state, set the STBY pin low and then
set it high again.
External Setting Mode Applications and the Output Voltage Setting Method
In the LV5254's external setting mode, the output voltage is set by the external resistors R1 and R2 and by the external
reference voltage, Vref_ext. In this mode, the output voltage is expressed by equation (1). The second term in equation
(1) is the error amplifier's offset component and the third term is the offset component due to the feedback current. The
voltage precision achieved by an application can be determined by considering the tolerances of the parameters in
equation (1).
VOUT = -
R2
R1
Vref_ext+
R1+R2
R1
VFB-R2IFB … (1)
FB
C5
C6
R2
R1
VOUT
Vref_ext
VOUT
IFB
VFB
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