s-8333aaca-t8t1g Seiko Instruments Inc., s-8333aaca-t8t1g Datasheet - Page 29

• Manufacturer Part Number: s-8333aaca-t8t1g
• Description: Step-up, For Lcd Bias Supply, 1-channel, Pwm Control Switching Regulator Controller
• Manufacturer: Seiko Instruments Inc.

2. Reference data (1)
Rev.2.3
2. 1 V
(2) f
(3) f
STEP-UP, FOR LCD BIAS SUPPLY, 1-CHANNEL, PWM CONTROL SWITCHING REGULATOR CONTROLLER
(1) f
(a) I
(a) I
(a) I
OSC
OSC
The data of (a) output current (I
(V
OSC
OUT
OUT
OUT
OUT
OUT
= 700 kHz, MaxDuty = 73% (R
= 286 kHz, MaxDuty = 73% (R
100
100
100
vs. η
vs. η
vs. η
= 1133 kHz, MaxDuty = 73% (R
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
_00
= 13.1 V (R
0
0
0
) characteristics is shown below.
0.01
0.01
0.01
0.1
0.1
0.1
FB1
= 7.5 k Ω , R
1
1
1
I
I
I
OUT
OUT
OUT
[mA]
[mA]
[mA]
10
10
10
OUT
FB2
OSC
OSC
) vs. efficiency ( η ) characteristics and (b) output current (I
= 620 Ω )
OSC
V
V
V
100
= 200 k Ω , R
100
= 510 k Ω , R
100
IN
IN
IN
= 5.0 V
= 5.0 V
= 5.0 V
= 120 k Ω , R
Seiko Instruments Inc.
1000
1000
1000
Duty
Duty
Duty
= 300 k Ω )
= 750 k Ω )
= 180 k Ω )
(b) I
(b) I
(b) I
OUT
OUT
OUT
13.20
13.15
13.10
13.05
13.00
12.95
12.90
13.20
13.15
13.10
13.05
13.00
12.95
12.90
13.20
13.15
13.10
13.05
13.00
12.95
12.90
vs. V
vs. V
vs. V
0.01
0.01
0.01
OUT
OUT
OUT
0.1
0.1
0.1
1
1
1
I
I
I
OUT
OUT
OUT
[mA]
[mA]
[mA]
10
10
10
OUT
S-8333 Series
) vs. output voltage
V
V
V
100
100
100
IN
IN
IN
= 5.0 V
= 5.0 V
= 5.0 V
1000
1000
1000
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