S-8365AAABA-M5T1Y2 Datasheet, PDF (33/63 Pages) Seiko Instruments Inc – PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
Rev.2.1_01
S-8365/8366 Series
 Characteristics (Typical Data)
1. Examples of Major Power Supply Dependence Characteristics (Ta = 25°C)
(1) Current consumption during operation (ISS1) vs.
Input voltage (VIN)
700
600
1.2 MHz
500
400
300
200
600 kHz
100
0
1.8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
VIN [V]
(2) Current consumption during shutdown (ISSS) vs.
Input voltage (VIN)
1.0
0.8
0.6
0.4
0.2
0.0
1.8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
VIN [V]
(3) Oscillation frequency (fosc) vs. Input voltage (VIN)
fOSC = 1.2 MHz
1.4
1.3
1.2
1.1
1.0
1.8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
VIN [V]
fOSC = 600 kHz
700
650
600
550
500
1.8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
VIN [V]
(4) Maximum duty ratio (MaxDuty) vs. Input voltage (VIN)
100
95
600 kHz
90
85
80
1.2 MHz
75
70
1.8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
VIN [V]
(5) Soft-start time (tSS) vs. Input voltage (VIN)
10
9
8
7
6
5
4
3
2
1
0
1.8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
VIN [V]
(6) PWM / PFM switching duty ratio (PFMDuty) vs. Input voltage (VIN)
40
35
30
25
20
15
10
5
0
1.8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
VIN [V]
33