S-8333CAAA-I8T1U Datasheet, PDF (26/44 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. Examples of Transient Response Characteristics
4.1 Powering ON (VOUT = 9.2 V, VIN = 0 V → 3.3 V, Ta = 25°C)
Remark The switch (SW) is inserted between the diode (SD) and VOUT output.
Controlled externally to turn SW on a few ms later after the VIN voltage is applied.
(1) fOSC = 1080 kHz, IOUT = 0 mA, tSS = 10 ms
12
8
4
4
0
2
0
5
0
5
10 15 20
time [ms]
(3) fOSC = 650 kHz, IOUT = 0 mA, tSS = 10 ms
12
8
4
4
0
2
0
5
0
5
10 15 20
time [ms]
(5) fOSC = 280 kHz, IOUT = 0 mA, tSS = 10 ms
12
8
4
4
0
2
0
5
0
5
10 15 20
time [ms]
(2) fOSC = 1080 kHz, IOUT = 100 mA, tSS = 10 ms
12
8
4
4
0
2
0
5
0
5
10 15 20
time [ms]
(4) fOSC = 650 kHz, IOUT = 100 mA, tSS = 10 ms
12
8
4
4
0
2
0
5
0
5
10 15 20
time [ms]
(6) fOSC = 280 kHz, IOUT = 100 mA, tSS = 10 ms
12
8
4
4
0
2
0
5
0
5
10 15 20
time [ms]
26