S-8365AAABA-M5T1Y2 Datasheet, PDF (41/63 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
3.7 Power supply voltage fluctuations (VOUT = 5.0 V, IOUT = 500 mA, PWM control, Ta = 25°C)
(1) fOSC = 1.2 MHz, VIN = 2.8 V → 3.8 V S-8365AABBA
5.60
16
5.40
14
5.20
12
5.00
VOUT
10
4.80
8
4.60
6
4.40
VIN
4
4.20
2
4.00
0
0.0 0.2 0.4 0.6 0.8 1.0
t [ms]
(2) fOSC = 1.2 MHz, VIN = 3.8 V → 2.8 V S-8365AABBA
5.60
16
5.40
14
5.20
12
5.00
VOUT
10
4.80
8
4.60
6
4.40
VIN
4
4.20
2
4.00
0
0.0 0.2 0.4 0.6 0.8 1.0
t [ms]
(3) fOSC = 600 kHz, VIN = 2.8 V → 3.8 V S-8365ABBBA
5.60
16
5.40
14
5.20
VOUT
12
5.00
10
4.80
8
4.60
6
4.40
VIN
4
4.20
2
4.00
0
0.0 0.2 0.4 0.6 0.8 1.0
t [ms]
(4) fOSC = 600 kHz, VIN = 3.8 V → 2.8 V S-8365ABBBA
5.60
16
5.40
14
5.20
5.00
VOUT
12
10
4.80
8
4.60
6
4.40
VIN
4
4.20
2
4.00
0
0.0 0.2 0.4 0.6 0.8 1.0
t [ms]
3.8 Power supply voltage fluctuations (VOUT = 5.0 V, IOUT = 500 mA, PWM / PFM switching control, Ta = 25°C)
(1) fOSC = 1.2 MHz, VIN = 2.8 V → 3.8 V S-8366AABBA
5.60
16
5.40
14
5.20
12
5.00
VOUT
10
4.80
8
4.60
6
4.40
VIN
4
4.20
2
4.00
0
0.0 0.2 0.4 0.6 0.8 1.0
t [ms]
(2) fOSC = 1.2 MHz, VIN = 3.8 V → 2.8 V S-8366AABBA
5.60
16
5.40
14
5.20
12
5.00
VOUT
10
4.80
8
4.60
6
4.40
VIN
4
4.20
2
4.00
0
0.0 0.2 0.4 0.6 0.8 1.0
t [ms]
(3) fOSC = 600 kHz, VIN = 2.8 V → 3.8 V S-8366ABBBA
5.60
16
5.40
14
5.20
VOUT
12
5.00
10
4.80
8
4.60
4.40
VIN
6
4
4.20
2
4.00
0
0.0 0.2 0.4 0.6 0.8 1.0
t [ms]
(4) fOSC = 600 kHz, VIN = 3.8 V → 2.8 V S-8366ABBBA
5.60
16
5.40
14
5.20
12
5.00
10
4.80
8
4.60
6
4.40
4
4.20
2
4.00
0
0.0 0.2 0.4 0.6 0.8 1.0
t [ms]
41