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RT8024 数据表(PDF) 2 Page - Richtek Technology Corporation

部件名 RT8024
功能描述  1.5MHz, 400mA, High Efficiency PWM Step-Down DC/DC Converter
PDF  13 Pages
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制造商  RICHTEK [Richtek Technology Corporation]
网页  http://www.richtek.com
标志 RICHTEK - Richtek Technology Corporation

RT8024 数据表(HTML) 2 Page - Richtek Technology Corporation

  RT8024 Datasheet HTML 1Page - Richtek Technology Corporation RT8024 Datasheet HTML 2Page - Richtek Technology Corporation RT8024 Datasheet HTML 3Page - Richtek Technology Corporation RT8024 Datasheet HTML 4Page - Richtek Technology Corporation RT8024 Datasheet HTML 5Page - Richtek Technology Corporation RT8024 Datasheet HTML 6Page - Richtek Technology Corporation RT8024 Datasheet HTML 7Page - Richtek Technology Corporation RT8024 Datasheet HTML 8Page - Richtek Technology Corporation RT8024 Datasheet HTML 9Page - Richtek Technology Corporation Next Button
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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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