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RT8024 データシート(PDF) 2 Page - Richtek Technology Corporation

部品番号 RT8024
部品情報  1.5MHz, 400mA, High Efficiency PWM Step-Down DC/DC Converter
PDF  13 Pages
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メーカー  RICHTEK [Richtek Technology Corporation]
ホームページ  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT8024 データシート(HTML) 2 Page - Richtek Technology Corporation

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RT8024
2
DS8024-02 March 2011
www.richtek.com
Layout note:
1. The distance that CIN connects to VIN is as close as possible (Under 2mm).
2. COUT should be placed near RT8024.
Typical Application Circuit
Figure 1. Fixed Voltage Regulator
Figure 2. Adjustable Voltage Regulator
⎟
⎠
⎞
⎜
⎝
⎛ +
=
R2
R1
1
x
V
V
REF
OUT
with R2 = 300k
Ω to 60kΩ so the IR2 = 2μA to 10μA,
and (R1 x C1) should be in the range between 3x10-6 and 6x10-6 for component selection.
Layout Guide
Figure 3
EN
GND
LX
VOUT
2
3
5
4
1
VIN
GND
V
IN
V
OUT
C
OUT
C
IN
GND
L
EN
GND
LX
FB
2
3
5
4
1
VIN
GND
V
IN
V
OUT
C
OUT
C
IN
GND
C1
R1
R2
L
V
OUT
4.7µF
10µF
VIN
LX
GND
RT8024
EN
VOUT
2.2µH
2.2V to 5.5V
VIN
VOUT
CIN
L
5
3
4
1
2
COUT
4.7µF
10µF
VIN
LX
GND
RT8024
EN
FB
2.2µH
2.2V to 5.5V
VIN
VOUT
CIN
L
5
3
4
1
2
COUT
R1
R2
C1
IR2



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