S-8333CAAA-I8T1U Datasheet, PDF (11/44 Pages) Seiko Instruments Inc – PWM CONTROL SWITCHING REGULATOR CONTROLLER

STEP-UP, FOR LCD BIAS SUPPLY, 1-CHANNEL, PWM CONTROL SWITCHING REGULATOR CONTROLLER
Rev.4.2_01
S-8333 Series
Input voltage
( V_IN)
3.3 V
0V
9.2 V
Output voltage
( V_{O UT} )
0V
1.0 V
Error amplifier
reference voltage
0V
F B pin voltage
( V_FB )
1.0 V
0V
3.3 V
EXT pin voltage
( V_EXT)
0V
(VIN = 0 V→3.3 V, VOUT = 9.2 V, RFB1 = 8.2 kΩ, RFB2 = 1.0 kΩ)
t_SS
SW : ON
V_OUT ×0.95
Reference voltage soft-start period
Maximum duty
soft-start period
t (ms)
Figure 8
11