S-8337AAAA-P8T1G Datasheet, PDF (33/51 Pages) Seiko Instruments Inc – SWITCHING REGULATOR CONTROLLER

STEP-UP, 1.2 MHz HIGH-FREQUENCY, PWM CONTROL SWITCHING REGULATOR CONTROLLER
Rev.4.0_01
S-8337/8338 Series
4. 4 Input voltage fluctuations (VOUT = 9.2 V, IOUT = 100 mA, RZ = 200 kΩ, CZ = 0.01 μF)
(1) fOSC = 1133 kHz, VIN = 2.7 V→3.7 V
4.0
V_IN ^3.5
[V] 3.0
2.5
9.30
9.25 VOUT
9.20 [V]
9.15
(2) fOSC = 1133 kHz, VIN = 3.7 V→2.7 V
4.0
V_IN ^3.5
[V] 3.0
2.5
–20
–10
0
10
time [ms]
(3) fOSC = 700 kHz, VIN = 2.7 V→3.7 V
4.0
V_IN ^3.5
[V] 3.0
2.5
20
–20
–10
0
10
time [ms]
9.30
9.25 VOUT
9.20 [V]
9.15
(4) fOSC = 700 kHz, VIN = 3.7 V→2.7 V
4.0
V_IN ^3.5
[V] 3.0
2.5
–20
–10
0
10
time [ms]
(5) fOSC = 286 kHz, VIN = 2.7 V→3.7 V
4.0
V_IN ^3.5
[V] 3.0
2.5
20
–20
–10
0
10
time [ms]
9.30
9.25 VOUT
9.20 [V]
9.15
(6) fOSC = 286 kHz, VIN = 3.7 V→2.7 V
4.0
V_IN ^3.5
[V] 3.0
2.5
–20
–10
0
10
20
time [ms]
–20
–10
0
10
time [ms]
9.30
9.25 VOUT
9.20 [V]
9.15
20
9.30
9.25 VOUT
9.20 [V]
9.15
20
9.30
9.25 VOUT
9.20 [V]
9.15
20
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