HA17524 Hitachi Semiconductor, HA17524 Datasheet - Page 7

• Manufacturer Part Number: HA17524
• Description: Switching Regulator Controller
• Manufacturer: Hitachi Semiconductor

Operating Waveforms
Figure 9 shows operating waveforms at every part, when stepdown voltage type chopper switching
regulator (figure 8) is used. Operating condition are as follows: f = 20 kHz, V
section, two channels are connected in parallel. Operating waveforms inside the IC are also shown.
HA17524
Figure 8 Stepdown Voltage Type Chopper Switching Regulator
0.1 F
0.01 F
5 k
5 k
6 k
Osc Out
5 k
5 k
(16)
(10)
(1)
(2)
(6)
(7)
(3)
Inv
Non Inv
Ref
R
C
Shut
Down
T
T
(15)
(8)
V
V
GND
CC
CC
Comp
+CL
–CL
C
E
C
E
2
2
1
1
(12)
(13)
(14)
(11)
15 V
(4)
(5)
(9)
50 k
0.001 F
3 k
Q
(A)
R
D
L
S
OUT
C
= 5 V. At the output
HA17524P/FP
V
5 V
OUT
7