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RT9202B 参数 Datasheet PDF下载

RT9202B图片预览
型号: RT9202B
PDF下载: 下载PDF文件 查看货源
内容描述: 单同步降压PWM DC- DC控制器 [Single Synchronous Buck PWM DC-DC Controller]
分类和应用: 控制器
文件页数/大小: 14 页 / 197 K
品牌: RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
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RT9202B
MU
C
OUT
1000uF
GND
C
BOOT
VCC
BOOT
0.1uF
RT9202B
G
S
GND Return
ML
D
D
L
5uH
G
S
+
C
IN1
1uF
C
IN2
470uF
+
C
VCC
1uF
Layout Placement
Layout Notes
1. Put CIN1 & CIN2 to be near the MU drain and ML source nodes.
2. Put RT9202B to be near the C
OUT
3. Put C
BOOT
as close as to BOOT pin
4. Put C
VCC
as close as to VCC pin
Function Block Diagram
VCC
Power on
Reset
6.0V
Regulation
Bias
BOOT
0.8
Reference
Soft Start
20uA
+
OC
-
1.1V
-
OVP
+
OCSET
UGATE
-
0.5V UVP
+
0.8V
FB
Error
+
-
Error
Amplifier
+
PWM
-
Control
Logic
VCC
PHASE
LGATE
GND
300kHz
Oscillator
DS9202B-03 March 2007
www.richtek.com
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