S-8340A25AFT-T2-X Datasheet, PDF (31/55 Pages) Seiko Instruments Inc – SWITCHABLE SWITCHING REGULATOR CONTROLLER

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
Rev.4.0_01
S-8340/8341 Series
(3) Load Fluctuations
S-8340A33AFT, fOSC = 600 kHz
100 mA
IOUT
100 μA
V_IN = 1.98 V, I_OUT = 100 mA → 100 μA
S-8340C33AFT, fOSC = 300 kHz
100 mA
IOUT
100 μA
V_IN = 1.98 V, I_OUT = 100 mA → 100 μA
V OUT
(0.02 V/div)
t (4 ms/div)
S-8340A33AFT, fOSC = 600 kHz
100 mA
IOUT
100 μA
V_IN = 1.98 V, I_OUT = 100 μA → 100 mA
VOUT
(0.02 V/div)
t (4 ms/div)
S-8340C33AFT, fOSC = 300 kHz
100 mA
IOUT
100 μA
V_IN = 1.98 V, I_OUT = 100 μA → 100 mA
V OUT
(0.02 V/div)
t (0.2 ms/div)
(4) Input Voltage Fluctuations
S-8340A33AFT, fOSC = 600 kHz
VIN ^{2.64 V}
(0.3 V/div)
1.98 V
V_IN = 1.98 → 2.64 V, I_OUT = 100 mA
V OUT
(0.02 V/div)
t (0.2 ms/div)
S-8340A33AFT, fOSC = 600 kHz
V_IN = 2.64 → 1.98 V, I_OUT = 100 mA
VIN ^{2.64 V}
(0.3 V/div)
1.98 V
VO UT
(0.02 V/div)
t (0.2 ms/div)
VOUT
(0.02 V/div)
t (0.2 ms/div)
S-8340C33AFT, fOSC = 300 kHz
66
VIN ^{2.64 V}
(0.4 V/div)
1.98 V
V_IN = 1.98 → 2.64 V, I_OUT = 100 mA
VOUT
(0.02 V/div)
t (0.2 ms/div)
S-8340C33AFT, fOSC = 300 kHz
VIN _{2.64 V}
(0.4 V/div)
1.98 V
V_IN = 2.64 → 1.98 V, I_OUT = 100 mA
VOUT
(0.02 V/div)
t (0.2 ms/div)
31