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參數(shù)資料
| 型號(hào)： | G5910 |
| 廠(chǎng)商： | Global Mixed-mode Technology Inc. |
| 英文描述： | High-Efficiency White LED Charge Pump |
| 中文描述： | 高效率白光LED電荷泵 |
| 文件頁(yè)數(shù)： | 9/10頁(yè) |
| 文件大?。?/td> | 456K |
| 代理商： | G5910 |
Ver: 1.4
May 19, 2006
TEL: 886-3-5788833
http://www.gmt.com.tw
8
G5910
Global Mixed-mode Technology Inc.
Block Diagram
Layout Considerations
High charge pump switching frequencies and large
peak transient currents mandate careful printed
circuit board layout. As a general rule for charge
pump boost converters, all external capacitors
should be located as close as possible to the de-
vice package with minimum length trace connec-
tions. Maximize the ground plane around the
G5910 charge pump and make sure all external
capacitors are connected to the immediate ground
plane. A local component side ground plane is
recommended. If this is not possible due the layout
design limitations, assure good ground connections
by the use of large or multiple pcb via's. Refer to
the following G5910 evaluation board for an exam-
ple of good charge pump layout design.
C+
C-
V
OUT
V
IN
SHDN
GND
S1
S4
S3
S2
V
IN
Shutdown
Control
Oscillator
Bandgap
UV
Bias
C+
C-
V
OUT
V
IN
SHDN
GND
S1
S4
S3
S2
V
IN
Shutdown
Control
Oscillator
Bandgap
UV
Bias
Bottom layer
Top layer
Topover layer
Bottom layer
Top layer
Topover layer
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