S-8351A20MC-J2FT2X Datasheet, PDF (32/51 Pages) Seiko Instruments Inc – SWITCHING REGULATOR CONTROLLER

STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER
S-8351/8352 Series
Rev.3.0_01
17. Transient Response Characteristics
The conditions for external parts are the same as those specified in the electrical characteristics.
(1) Power-on (Ta = 25°C, RL = 250 Ω)
S-8351A30MC
Input voltage
[0.5 V / div]
0V
Output voltage
[0.5 V / div]
0V
VIN = 0 → 1.8 V
1.8 V
3V
t [0.2 ms / div]
S-8351A50MC
Input voltage
[1 V / div]
0V
Output voltage
[1 V / div]
0V
S-8352A30MC
Input voltage
[0.5 V / div]
0V
Output voltage
[0.5 V / div]
0V
VIN = 0 → 1.8 V
1.8 V
3V
t [0.2 ms / div]
S-8352A50MC
Input voltage
[1 V / div]
0V
Output voltage
[1 V / div]
0V
(2) Power Supply Voltage Fluctuation (Ta = 25°C, RL = 250 Ω)
S-8351A30MC
Input voltage
[0.5 V /div]
1.2 V
Output voltage
[0.1 V / div]
VIN = 1.2 → 1.8 V
1.8 V
3V
S-8351A30MC
1.8 V
Input voltage
[0.5 V / div]
Output voltage
[0.1 V / div]
VIN = 0 → 3 V
3V
5V
t [0.2 ms / div]
VIN = 0 → 3 V
3V
5V
t [0.2 ms / div]
VIN = 1.8 → 1.2 V
1.2 V
3V
S-8351A50MC
Input voltage
[0.5 V / div]
2V
t [0.1 ms / div]
VIN = 2 → 3 V
3V
Output voltage
[0.1 V / div]
5V
t [0.1 ms / div]
S-8351A50MC
3V
Input voltage
[0.5 V / div]
Output voltage
[0.1 V / div]
VIN = 3 → 2 V
2V
5V
t [0.1 ms / div]
t [0.1 ms / div]
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