參數(shù)資料
型號(hào)： AN-40
廠商： Micrel Semiconductor,Inc.
英文描述： Application Note 40
中文描述： 應(yīng)用筆記40
文件頁(yè)數(shù)： 3/3頁(yè)
文件大?。?/td> 37K
代理商： AN-40
August 2002
3
Application Note 40
Application Note 40
Micrel
L1
47
μ
H
Murata
LQH32C470K34
R3
1k
U1
MIC2142
EN
SW
VCC
GND
FB
1
2
3
4
5
D1
MBR0530
R1
1.27k
C3
10
μ
F/16V
Murata
GRM42-6X5R106K16
R2
1M
C2
1
μ
F
25V
C1
10
μ
F/6.3V
Taiyo Yuden
JMK212BJ106MG
GND
+VIN
3.0V to 4.2V
SHDN
Z1
16V
White LEDs
174
Figure 5. Dual Mode
L1
22
μ
H
Murata
LQH32CN220K1
R3
1k
R2
1M
U1
MIC2142
EN
SW
VCC
GND
FB
1
2
3
4
5
D1
MBR0530
R1
86.6
C3
10
μ
F/16V
Murata
GRM42-6X5R106K16
C2
1
μ
F
25V
C1
10
μ
F/6.3V
Taiyo Yuden
JMK212BJ106MG
GND
DAC
Figure 6. Series White LED Driver with Analog Dimming Control
+VIN
3.0V to 4.2V
SHDN
Z1
16V
White LEDs
R4
R5
Summary
The demand of white and blue LEDs will dramatically in-
crease over the year due to the their low voltage, small size,
simplicity and long life-span. Micrel
’
s LED drivers will allow
designer to easily power these white and blue LEDs with high
efficiency, low profile components, and minimum component
counts.
MICREL, INC.
TEL
+ 1 (408) 944-0800
FAX
+ 1 (408) 944-0970
WEB
http://www.micrel.com
This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or
other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel, Inc.
2002 Micrel, Incorporated
1849 FORTUNE DRIVE
SAN JOSE, CA 95131
USA
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