s-8337aaca-t8t1g Seiko Instruments Inc., s-8337aaca-t8t1g Datasheet - Page 24

• Manufacturer Part Number: s-8337aaca-t8t1g
• Description: Step-up, 1.2 Mhz High-frequency, Pwm Control Switching Regulator Controller
• Manufacturer: Seiko Instruments Inc.

24
STEP-UP, 1.2 MHz HIGH-FREQUENCY, PWM CONTROL SWITCHING REGULATOR CONTROLLER
S-8337/8338 Series
MaxDuty
[%]
V
[V]
UVLOHYS
I
[μA]
t
[ms]
CCL
PRO
100
90
80
70
60
50
40
30
20
10
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.35
0.30
0.25
0.20
0.15
0.10
0.05
100
0
90
80
70
60
50
40
30
20
10
−40
0
0
0
−40
−40
−40
−20
−20
−20
−20
MaxDuty vs. Ta (V
MaxDuty = 88.5% (R
MaxDuty = 77% (R
MaxDuty = 47% (R
0
I
t
CCL
PRO
0
0
0
V
vs. Ta (V
vs. Ta (V
20
Ta [°C]
UVLOHYS
t
PRO
20
20
20
Ta [°C]
Ta [°C]
Ta [°C]
V
V
= 50 ms (CSP = 0.1 μF)
OSC
OSC
UVLOHYS
UVLOHYS
40
OSC
= 200 kΩ, R
= 200 kΩ, R
40
40
40
vs. Ta
= 200 kΩ, R
IN
IN
IN
= 3.3 V)
= 3.3 V)
= 3.3 V)
60
= 0.3 V
= 0.1 V
60
60
60
Duty
Duty
Duty
Seiko Instruments Inc.
= 300 kΩ)
= 820 kΩ)
= 100 kΩ)
80
80
80
80
100
100
100
100
t
[ms]
V
[V]
I
[μA]
V
[V]
CCH
SS
UVLO
RTLT
–100
25.0
20.0
15.0
10.0
–90
–80
–70
–60
–50
–40
–30
–20
–10
5.0
2.5
2.0
1.5
1.0
0.5
1.2
1.0
0.8
0.6
0.4
0.2
0
0
0
0
−40
−40
−40
−40
−20
−20
−20
−20
V
I
CCH
t
RTLT
SS
0
0
0
0
vs. Ta (V
t
vs. Ta (V
SS
V
vs. Ta (V
UVLO
= 10 ms
20
20
20
20
Ta [°C]
Ta [°C]
Ta [°C]
Ta [°C]
vs. Ta
t
SS
IN
40
40
40
40
V
V
IN
= 20 ms
IN
UVLO
UVLO
= 3.3 V)
= 3.3 V)
= 3.3 V)
= 2.3 V
= 1.5 V
60
60
60
60
Rev.3.1
80
80
80
80
100
100
100
100
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