s-8333aaca-t8t1g Seiko Instruments Inc., s-8333aaca-t8t1g Datasheet - Page 33

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

Rev.2.3
3. 3 V
STEP-UP, FOR LCD BIAS SUPPLY, 1-CHANNEL, PWM CONTROL SWITCHING REGULATOR CONTROLLER
(1) f
(3) f
(R
(R
OSC
OSC
OSC
OSC
OUT
100
100
= 1133 kHz, MaxDuty = 73%
90
80
70
60
50
40
30
20
10
= 286 kHz, MaxDuty = 73%
90
80
70
60
50
40
30
20
10
= 120 k Ω , R
= 510 k Ω , R
_00
= 6.1 V (R
0
0
0.01
0.01
0.1
0.1
V
V
V
V
FB1
IN
IN
IN
IN
Duty
Duty
= 2.5 V
= 3.3 V
= 2.5 V
= 3.3 V
= 5.1 k Ω , R
= 180 k Ω )
= 750 k Ω )
1
1
I
I
OUT
OUT
[mA]
[mA]
10
10
FB2
= 1.0 k Ω )
100
100
Seiko Instruments Inc.
1000
1000
(2) f
(R
OSC
OSC
100
= 700 kHz, MaxDuty = 73%
90
80
70
60
50
40
30
20
10
= 200 k Ω , R
0
0.01
0.1
V
V
IN
IN
Duty
= 2.5 V
= 3.3 V
= 300 k Ω )
1
I
OUT
[mA]
10
S-8333 Series
100
1000
33