參數(shù)資料
型號(hào)： XC9101D09AKL
英文描述： Analog IC
中文描述： 模擬IC
文件頁(yè)數(shù)： 12/21頁(yè)
文件大?。?/td> 156K
代理商： XC9101D09AKL
5. FB Voltage and Cfb
With regard to the XC9101D series, the output voltage is set by attaching externally dividing resistors. The
output voltage is determined by the equation shown below according to the values of Rfb1 and Rfb2. In
general, the sum of Rfb1 and Rfb2 should be 1 MEG
or less.
Example:
12
Cfb = 1/(2 x
π
x Rfb1 x fzfb)
When Rfb1 = 455 k
and Rfb2 = 100 k
, V
OUT
= 0.9 x (455 k + 100 k)/100 k = 4.995 V and Cfb =
1/(2 x
π
x 455 k x 10 k) = 34.98 pF.
V
OUT
= 0.9 x (Rfb1 + Rfb2)/Rfb2
The value of Cfb (phase compensation capacitor) is approximated by the following equation according to the
values of Rfb1 and fzfb. The value of fzfb should be 10 kHz, as a general rule.
XC9101/02 Series
PWM Controlled, PWM//PFM Switchable Step-Up DC/DC Converters
FB pin
[Inside IC, XC9101/02]
Rfb1
+
-
Rfb2
Verr amplifier
0.9 V
Cfb
Output voltage
Verr
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參數(shù)描述
XC9101D09AKR 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:Analog IC
XC9101D09AKRN 制造商:Torex Semiconductor LTD 功能描述:
XC9101D20AKL 制造商:TOREX 制造商全稱(chēng):Torex Semiconductor 功能描述:PWM Controlled Step-Up DC/DC Controllers
XC9101D20AKR 制造商:TOREX 制造商全稱(chēng):Torex Semiconductor 功能描述:PWM Controlled Step-Up DC/DC Controllers
XC9101D23AKL 制造商:TOREX 制造商全稱(chēng):Torex Semiconductor 功能描述:PWM Controlled Step-Up DC/DC Controllers
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