S-8363B-I6T1U2 Datasheet, PDF (29/50 Pages) Seiko Instruments Inc – PWM/PFM SWITCHABLE SWITCHING REGULATOR

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
 Characteristics (Typical Data)
1. Examples of Major Power Supply Dependence Characteristics (Ta = +25°C)
(1) Current consumption during operation (IIN1) vs.
Operating input voltage (VIN)
Current consumption during switching off (IIN2) vs.
Operating input voltage (VIN)
12
10
8
IIN1, IIN2
6
4
2
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VIN [V]
(2) Current consumption during operation (ISS1) vs.
Output voltage (VOUT)
Current consumption during switching off (ISS2) vs.
Output voltage (VOUT)
1000
900
800
700
600
ISS1
500
400
300
200
ISS2
100
0
0.0 1.0 2.0 3.0 4.0 5.0
VOUT [V]
(3) Current consumption during power-off (ISSS) vs. Operating input voltage (VIN), Output voltage (VOUT)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VIN, VOUT [V]
(4) Oscillation frequency (fOSC) vs.
Output voltage (VOUT)
1.38
1.34
1.30
1.26
1.22
1.18
1.14
1.10
1.06
1.02
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VOUT [V]
(5) Start-up oscillation frequency (fST) vs.
Operating input voltage (VIN)
500
450
400
350
300
250
200
150
100
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VIN [V]
(6) Maximum duty ratio (MaxDuty) vs.
Output voltage (VOUT)
100
95
90
85
80
75
70
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VOUT [V]
(7) Soft-start time (tSS) vs. Output voltage (VOUT)
1.5
1.4
1.3
1.2
1.1
1.0
0.9
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VOUT [V]
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