S-8363B-I6T1U2 Datasheet, PDF (32/50 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) Maximum duty ratio (MaxDuty) vs. Temperature (Ta)
100
95
90
85
VOUT = 1.8 V
80
VOUT = 3.3 V
75
VOUT = 5.0 V
70
−40 −25
0
25 50
Ta [C]
75 85
(9) Soft-start time (tSS) vs. Temperature (Ta)
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
−40 −25 0
VOUT = 1.8 V
VOUT = 3.3 V
VOUT = 5.0 V
25 50 75 85
Ta [C]
(10) PWM / PFM switching duty ratio (PFMDuty) vs.
Temperature (Ta)
25
20
VOUT = 5.0 V, VIN = 3.0 V
15
10
VOUT = 1.8 V, VIN = 1.2 V
5
VOUT = 3.32 V, VIN = 1.8 V
0
−40 −25
0
25 50
Ta [C]
75 85
(11) Output current at PWM / PFM switching (IPFM) vs.
Temperature (Ta)
30
25
20
VOUT = 5.0 V, VIN = 3.0 V
VOUT = 3.32 V, VIN = 1.8 V
15
VOUT = 1.8 V, VIN = 1.2 V
10
5
0
−40 −25
0
25 50
Ta [C]
75 85
(12) Limited current (ILIM) vs.
Temperature (Ta)
1600
1400
VOUT = 5.0 V, VIN = 3.0 V
1200
1000
800
600
400
−40 −25
VOUT = 3.32 V, VIN = 1.8 V
VOUT = 1.8 V, VIN = 1.2 V
0
25 50
Ta [C]
75 85
(13) Maximum load current (IOUTMAX) vs.
Temperature (Ta)
1000
900
800 _{VOUT = 5.0 V, VIN = 3.0 V}
700 _{VOUT = 3.32 V, VIN = 1.8 V}
600
500
400
300
200 _{VOUT = 1.8 V, VIN = 1.2 V}
100
0
−40 −25 0
25 50
Ta [C]
75 85
(14) Power MOS FET leakage current (ILSW) vs.
Temperature (Ta)
0.5
0.4
0.3
0.2
0.1
0.0
−0.1
−0.2
−0.3
−0.4
−0.5
−40 −25
VOUT = 1.8 V
VOUT = 3.3 V
VOUT = 5.0 V
0
25 50
75 85
Ta [C]
(15) High level input voltage (VSH) vs.
Temperature (Ta)
0.60
0.55
VIN = 4.5 V
VIN = 4.2 V
0.50
0.45
0.40
0.35
VIN = 1.8 V
VIN = 0.9 V
0.30
−40 −25
0
25 50
Ta [C]
75 85
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