PWM Buck Controller
Typical Characteristics (Continued)
AP2004
OSCILLATOR FREQUENCY
v.s.
TIMING CAPACITANCE
350
300
250
200
150
100
50
0
100 600 1100 1600 2100 2600 3100 3600 4100 4600 5100 5600 6100 6600
CT-Timing Capacitor (pF)
35
30
25
20
15
10
5
0
45
SCP TIME-OUT PERIOD
v.s.
SCP CAPACITANCE
90 135 180 225 270 315 360 405 450 495
Cscp - SCP Capacitance (nF)
SOFT-START TIME (Ts)
v.s.
SOFT-START CAPACITOR (Css)
30
25
20
15
10
5
0
25 50 75 100 125 150 175 200
Css (nF)
Marking Information
Logo
Part No.
(Top View)
8
5
AC
AP2004
YY WW X X
1
4
PDIP/SOP
ID code
Blank: normal
L: Lead Free Package
Xth week: 01~52
Year: "01" =2001
"02" =2002
Anachip Corp.
www.anachip.com.tw
Rev. 0.4 Apr 6, 2004
6/8