S-8333CAAA-I8T1U Datasheet, PDF (28/44 Pages) Seiko Instruments Inc – PWM CONTROL SWITCHING REGULATOR CONTROLLER

STEP-UP, FOR LCD BIAS SUPPLY, 1-CHANNEL, PWM CONTROL SWITCHING REGULATOR CONTROLLER
S-8333 Series
Rev.4.2_01
4.3 Input voltage fluctuations (VOUT = 9.2 V, IOUT = 100 mA, RZ = 200 kΩ, CZ = 0.01 μF)
(1) fOSC = 1080 kHz, VIN = 2.8 V→3.8 V
4.0
VIN ^3.5
[V] _3.0
2.5
9.40
9.30 _VOUT
9.20 ^[V]
9.10
(2) fOSC = 1080 kHz, VIN = 3.8 V→2.8 V
4.0
VIN ^3.5
[V] _3.0
2.5
20
10
0
10
time [ms]
(3) fOSC = 650 kHz, VIN = 2.8 V→3.8 V
4.0
VIN ^3.5
[V] _3.0
2.5
20
20
10
0
10
time [ms]
9.40
9.30 _VOUT
9.20 ^[V]
9.10
(4) fOSC = 650 kHz, VIN = 3.8 V→2.8 V
4.0
VIN ^3.5
[V] _3.0
2.5
20
10
0
10
time [ms]
(5) fOSC = 280 kHz, VIN = 2.8 V→3.8 V
4.0
VIN ^3.5
[V] _3.0
2.5
20
20
10
0
10
time [ms]
9.40
9.30 _VOUT
9.20 ^[V]
9.10
(6) fOSC = 280 kHz, VIN = 3.8 V→2.8 V
4.0
VIN ^3.5
[V] _3.0
2.5
20
10
0
10
20
time [ms]
20
10
0
10
time [ms]
9.40
9.30 _VOUT
9.20 ^[V]
9.10
20
9.40
9.30 _VOUT
9.20 ^[V]
9.10
20
9.40
9.30 _VOUT
9.20 ^[V]
9.10
20
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