s-8333aaca-t8t1g Seiko Instruments Inc., s-8333aaca-t8t1g Datasheet - Page 24

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

24
STEP-UP, FOR LCD BIAS SUPPLY, 1-CHANNEL, PWM CONTROL SWITCHING REGULATOR CONTROLLER
S-8333 Series
3. Example of External Parts Dependence Characteristics
f
MaxDuty vs. R
t
OSC
PRO
1600
1400
1200
1000
100
350
300
250
200
150
100
800
600
400
200
vs. R
vs. CSP (V
90
80
70
60
50
40
30
20
10
50
0
0
0
0
0
0
OSC
0.5
(V
100
Duty
0.1
IN
IN
1
= 3.3 V)
= 3.3 V)
/ R
200
1.5 2
OSC
Ta = −40°C
R
0.2
R
CSP [µF]
Ta = 25°C
Duty
(R
OSC
300
OSC
/ R
[kΩ]
2.5 3
Ta = 85°C
OSC
0.3
= 200 k Ω , V
Ta = −40°C
400
Ta = 25°C
Ta = 85°C
Ta = −40°C
Ta = 25°C
Ta = 85°C
3.5
0.4
500
IN
4
= 3.3 V)
600
4.5
0.5
Seiko Instruments Inc.
Rev.2.3
_00