S-8363B-I6T1U2 Datasheet, PDF (30/50 Pages) Seiko Instruments Inc – PWM/PFM SWITCHABLE SWITCHING REGULATOR

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series
Rev.2.0_01
(8) PWM / PFM switching duty ratio (PFMDuty) vs.
Operating input voltage (VIN)
25
VOUT = 1.8 V
20
VOUT = 3.32 V
15
10
5
VOUT = 5.0 V
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VIN [V]
(10) Limited current (ILIM) vs.
Operating input voltage (VIN)
1600
1400 ^{VOUT = 1.8 V}
1200
1000
800
600
VOUT = 5.0 V
VOUT = 3.32 V
400
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VIN [V]
(12) Power MOS FET leakage current (ILSW) vs.
Output voltage (VOUT)
0.5
0.4
0.3
0.2
0.1
0.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VOUT [V]
(14) Low level input voltage (VSL) vs.
Operating input voltage (VIN)
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VIN [V]
(9) Output current at PWM / PFM switching (IPFM) vs.
Operating input voltage (VIN)
70
60
VOUT = 5.0 V
50
40
VOUT = 3.32 V
30 ^{VOUT = 1.8 V}
20
10
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VIN [V]
(11) Maximum load current (IOUTMAX) vs.
Operating input voltage (VIN)
1000
900
800
VOUT = 3.32 V
700 VOUT = 1.8 V
600
500
400
300
200
VOUT = 5.0 V
100
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VIN [V]
(13) High level input voltage (VSH) vs.
Operating input voltage (VIN)
0.8
0.7
0.6
0.5
0.4
0.3
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VIN [V]
(15) FB voltage (VFB) vs. Output voltage (VOUT)
0.63
0.62
0.61
0.60
0.59
0.58
0.57
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VOUT [V]
30