S-8353A20MC-IQFT2X Datasheet, PDF (27/49 Pages) Seiko Instruments Inc – BUILT-IN TRANSISTOR SWITCHING REGULATOR

STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR
Rev.3.0_01
S-8353/8354 Series
 Characteristics (Typical Data)
1. Example of Major Temperature characteristics (Ta = −40°C to +85°C, VOUT = 3.3 V)
(1) Current Consumption 1 (ISS1) vs. Temperature (Ta)
fOSC = 50 kHz
50
50
fOSC = 250 kHz
40
40
30
30
20
20
10
0
−40 −20 0 20 40 60 80 100
Ta [°C]
10
0
−40 −20 0 20 40 60 80 100
Ta [°C]
(2) Current Consumption 2 (ISS2) vs. Temperature (Ta)
fOSC = 50 kHz
10
10
fOSC = 250 kHz
8
8
6
6
4
4
2
2
0
−40 −20 0 20 40 60 80 100
Ta [°C]
0
−40 −20 0 20 40 60 80 100
Ta [°C]
(3) Current Consumption at Shutdown (ISSS) vs. Temperature (Ta)
fOSC = 250 kHz
1.0
0.8
0.6
0.4
0.2
0
−40 −20 0 20 40 60 80 100
Ta [°C]
(4) Switching Current (ISW) vs. Temperature (Ta)
fOSC = 250 kHz
500
(5) Switching Transistor Leakage Current (ISWQ) vs. Temperature (Ta)
fOSC = 250 kHz
1.0
400
0.8
300
0.6
200
0.4
100
0.2
0
−40 −20 0
20 40 60 80 100
Ta [°C]
0
−40 −20 0 20 40 60 80 100
Ta [°C]
27