s-8337aaca-t8t1g Seiko Instruments Inc., s-8337aaca-t8t1g Datasheet - Page 32

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

32
STEP-UP, 1.2 MHz HIGH-FREQUENCY, PWM CONTROL SWITCHING REGULATOR CONTROLLER
S-8337/8338 Series
(1) f
(3) f
(5) f
V
[V]
V
[V]
V
[V]
IN
IN
IN
4. 4 Input voltage fluctuations (V
4.0
3.5
3.0
2.5
4.0
3.5
3.0
2.5
4.0
3.5
3.0
2.5
OSC
OSC
OSC
–20
–20
–20
= 1133 kHz, V
= 700 kHz, V
= 286 kHz, V
–10
–10
–10
IN
IN
IN
time [ms]
time [ms]
time [ms]
= 2.7 V→3.7 V
= 2.7 V→3.7 V
= 2.7 V→3.7 V
0
0
0
10
10
10
OUT
= 9.2 V, I
Seiko Instruments Inc.
20
20
20
9.30
9.25
9.20
9.15
9.30
9.25
9.20
9.15
9.30
9.25
9.20
9.15
OUT
V
[V]
V
[V]
V
[V]
OUT
OUT
OUT
= 100 mA, R
(2) f
V
[V]
(4) f
V
[V]
(6) f
V
[V]
IN
IN
IN
4.0
3.5
3.0
2.5
4.0
3.5
3.0
2.5
4.0
3.5
3.0
2.5
OSC
OSC
OSC
–20
–20
–20
Z
= 200 k Ω , C
= 1133 kHz, V
= 700 kHz, V
= 286 kHz, V
–10
–10
–10
Z
IN
IN
= 0.01 μ F)
IN
time [ms]
time [ms]
time [ms]
= 3.7 V→2.7 V
= 3.7 V→2.7 V
= 3.7 V→2.7 V
0
0
0
10
10
10
Rev.3.1
20
20
20
9.30
9.25
9.20
9.15
9.30
9.25
9.20
9.15
9.30
9.25
9.20
9.15
V
[V]
V
[V]
V
[V]
_00
OUT
OUT
OUT