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AP1624 Datasheet(PDF) 4 Page - Diodes Incorporated

Part # AP1624
Description  PWM/PFM DUAL MODE STEP-UP DC/DC CONTROLLER
PDF  7 Pages
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Manufacturer  DIODES [Diodes Incorporated]
Direct Link  http://www.diodes.com
Logo DIODES - Diodes Incorporated

AP1624 Datasheet(HTML) 4 Page - Diodes Incorporated

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AP1624
PWM/PFM DUAL MODE STEP-UP DC/DC CONTROLLER
AP1624 Rev. 1
4 of 7
FEBRUARY 2007
www.diodes.com
© Diodes Incorporated
Typical Application Circuit
(1) Normal Circuit
R1
NMOS
AF2302
2.5V~5.5V
EXT
CE
FB
GND
V
CC
SS240
10 H
V
IN
100K
0.1
R2
V
OUT
µ
470µ
470µ
µ
0.1µ
100
0.1µ
0.1µ
VOUT = 1.23 × (1+
R2
R1
), R2 = 10K ~ 20K
(2) LV Circuit
220K
0.9V~2.5
V
EX
T
CE
FB
GND
V C
C
Schottky Diode
0.1
130K
C
P
3.3V
4
7
£g
4
7
£g
£g
L
100K
NPN
C
B
R
B
V OU
T
V I
N
RB = Adjust according to load and Tr. hFE levels
CB ≤ 1 / ( 2π × RB × FOSC × 0.7 )
(3) HV Circuit
330K
FDS6612
Above to 5V
EXT
CE
FB
GND
V
CC
SS240
10 H
V
IN
100K
0.1
V
OUT
µ
470µ
0.1µ
470µ
µ
0.1µ
R
24V/1A
ZD
5V
18K
Not Recommended
for New Designs



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