an8049sh Panasonic Corporation of North America, an8049sh Datasheet - Page 13

• Manufacturer Part Number: an8049sh
• Description: 1.8-volt 3-channel Step-up, Step-down, And Polarity Inverting Dc-dc Converter Control Ic
• Manufacturer: Panasonic Corporation of North America

I Application Notes (continued)
[2] Main characteristics
100k
10k
100
1M
Timing capacitance  Oscillator frequency
90
80
70
60
50
40
30
20
10
95
90
85
80
75
0
10p
10k
0.2
DT3 pin voltage  Maximum on-duty
f
OSC
0.3
 Maximum output duty
0.4
f = 190 kHz
V
f
OSC
C
DT3
100k
T
0.5
1n
(F)
(Hz)
(V)
Du
1
, Du
0.6
2
R
f = 1 MHz
R
R
T
T
T
= 7.5 kΩ
= 3 kΩ
= 33 kΩ
Du
R
T
0.7
3
= 7.5 kΩ
10n
1M
0.8
SDH00012BEB
DT1 and DT2 pin voltage  Maximum on-duty
100
90
80
70
60
50
40
30
20
10
95
90
85
80
75
95
90
85
80
75
0
10k
0.2
10k
Du
Du
f
f
1
OSC
OSC
0.3
3
 Maximum output duty
 Maximum output duty
Du
0.4
2
f = 190 kHz
f
f
V
OSC
OSC
DT
100k
100k
0.5
(Hz)
(Hz)
(V)
Du
f = 1 MHz
0.6
1
, Du
2
R
T
0.7
AN8049SH
R
= 33 kΩ
Du
T
= 3 kΩ
3
1M
1M
0.8
13