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參數(shù)資料
| 型號： | AP1624 |
| 英文描述： | JFET; Package/Case:TO-71; Leaded Process Compatible:No; Current Rating:10mA; Mounting Type:Through Hole; Peak Reflow Compatible (260 C):No; Voltage Rating:-40V |
| 中文描述： | PWM / PFM切換雙模式升壓型DC / DC控制器 |
| 文件頁數(shù)： | 4/7頁 |
| 文件大?。?/td> | 172K |
| 代理商： | AP1624 |
AP1624
PWM/PFM Dual Mode Step-up DC/DC Controller
Typical Application Circuit
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Dec.23, 2004
4/7
(1) Normal Circuit
R1
NMOS
AF2302
2.5V~5.5V
V
IN
EXT
CE
FB
GND
V
CC
SS240
10μ
100K
0.1
R2
V
OUT
470
μ
470
μ
μ
0.1
μ
100
0.1
μ
0.1
μ
V
OUT
=1.23
×
(1+
R2
R1
), R2=10K ~ 20K
(2) LV Circuit
220K
0.9V~2.5V
V
IN
EXT
CE
FB
GND
V
CC
Schottky Diode
0.1
130K
C
P
3.3V
V
OUT
47
μ
47
μ
μ
L
100K
NPN
C
B
R
B
R
B
=Adjust according to load and Tr.hFE levels
C
B
≤
1/(2
π
×
R
B
×
F
OSC
×
0.7)
(3) HV Circuit
Above to 5V
V
IN
330K
FDS6612
EXT
CE
GND
FB
V
CC
SS240
10μ
100K
0.1
V
OUT
470
μ
0.1
μ
470
μ
μ
0.1
μ
R
24V/1A
ZD
5V
18K
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