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S-8340A25AFT-T2-X Datasheet, PDF (30/55 Pages) Seiko Instruments Inc – SWITCHABLE SWITCHING REGULATOR CONTROLLER
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STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
S-8340/8341 Series
Rev.4.0_01
2. Examples of Transient Response Characteristics
(1) Power-on (Typical Data)
S-8340A33AFT, fOSC = 600 kHz, Ta = 25°C
3V
VIN
(1 V/div)
0V
VIN = 0 → 1.98 V, IOUT = 1 mA
3V
VIN
(1 V/div)
0V
3V
V OUT
(1 V/div)
0V
3V
V OUT
(1 V/div)
0V
t (2 ms/div)
S-8340C33AFT, fOSC = 300 kHz, Ta = 25°C
I
3V
VIN
(1 V/div)
0V
VIN = 0 → 1.98 V, IOUT = 1 mA
3V
VIN
(1 V/div)
0V
3V
V OUT
(1 V/div)
0V
t (4 ms/div)
(2) ON/OFF Pin Response (Typical Data)
S-8340A33AFT, fOSC = 600 kHz, Ta = 25°C
3V
VO N/O FF
(1 V/div)
0V
VON/OFF = 0 → 1.98 V, IOUT = 1 mA
3V
V OUT
(1 V/div)
0V
t (2 ms/div)
S-8340C33AFT, fOSC = 300 kHz, Ta = 25°C
VON/OFF = 0 → 1.98 V, IOUT = 1 mA
3V
VO N/O FF
(1 V/div)
0V
3V
V OUT
(1 V/div)
0V
3V
VO N/O FF
(1 V/div)
0V
3V
V OUT
(1 V/div)
0V
3V
VO N/O FF
(1 V/div)
0V
3V
V OUT
(1 V/div)
0V
t (4 ms/div)
3V
V OUT
(1 V/div)
0V
VIN = 0 → 1.98 V, IOUT = 200 mA
t (2 ms/div)
VIN = 0 → 1.98 V, IOUT = 200 mA
t (4 ms/div)
VON/OFF = 0 → 1.98 V, IOUT = 200 mA
t (2 ms/div)
VON/OFF = 0 → 1.98 V, IOUT = 200 mA
t (4 ms/div)
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