S-8353A20MC-IQFT2X Datasheet, PDF (30/49 Pages) Seiko Instruments Inc – BUILT-IN TRANSISTOR SWITCHING REGULATOR

STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR
S-8353/8354 Series
Rev.3.0_01
2. Examples of Major Power Supply Dependence Characteristics (Ta = 25°C)
(1) Current Consumption 1 (ISS1) vs. Power Supply Voltage (VDD),
Current Consumption 2 (ISS2) vs. Power Supply Voltage
(VDD)
VOUT = 3.3 V, fOSC = 50 kHz
VOUT = 3.3 V, fOSC = 250 kHz
50
100
40
80
30
60
20
40
10
20
0
0
2
4
6
8
10
V_DD [V]
0
0
2
4
6
8
10
V_DD [V]
(2) Oscillation Frequency (fOSC) vs. Power Supply Voltage (VDD)
fOSC = 50 kHz
fOSC = 250 kHz
70
300
60
250
50
200
40
150
30
0
2
4
6
8
10
V_DD [V]
100
0
2
4
6
8
10
V_DD [V]
(3) Switching Current (ISW) vs. Power Supply Voltage (VDD)
500
400
300
200
100
0
0
2
4
6
8
10
VDD [V]
(4) Output Voltage (VOUT) vs. Power Supply Voltage (VDD) (VOUT = 3.3 V, VIN = 1.98 V, IOUT = 13.2 mA, VDD Separate Type)
fOSC = 50 kHz
fOSC = 250 kHz
3.4
3.4
3.3
3.3
3.2
3.2
3.1
3.1
3.0
0
2
4
6
8
10
V_DD [V]
30
3.0
0
2
4
6
8
10
V_DD [V]