S-8337AAAA-P8T1G Datasheet, PDF (24/51 Pages) Seiko Instruments Inc – SWITCHING REGULATOR CONTROLLER

STEP-UP, 1.2 MHz HIGH-FREQUENCY, PWM CONTROL SWITCHING REGULATOR CONTROLLER
S-8337/8338 Series
Rev.4.0_01
 Characteristics (Typical Data)
1. Example of Major Temperature Characteristics (Ta = −40 to 85°C)
ISS1 vs. Ta (VIN = 3.3 V)
700
600
f_OSC = 1133 kHz (R_OSC = 120 kΩ)
500
ISS1 400
[μA] ₃₀₀
f_OSC = 700 kHz (R_OSC = 200 kΩ)
200
100
f_OSC = 286 kHz (R_OSC = 510 kΩ)
0
−40 −20 0
20 40 60 80 100
Ta [°C]
–200
–180
IEXTH vs. Ta (VIN = 3.3 V)
f_OSC = 700 kHz, MaxDuty = 77% (R_OSC = 200 kΩ, R_Duty = 300 kΩ)
–160
–140
IEXTH
[mA]
–120
–100
–80
–60
–40
–20
0
−40 −20 0 20 40 60 80 100
Ta [°C]
0.10
IFB vs. Ta (VIN = 3.3 V)
0.08
0.06
0.04
IFB
[μA]
0.02
0
–0.02
–0.04
–0.06
–0.08
–0.10
−40 −20 0 20 40 60 80 100
Ta [°C]
1.0
0.9
0.8
0.7
ISSS
[μA]
0.6
0.5
0.4
0.3
0.2
0.1
0
−40
ISSS vs. Ta (VIN = 3.3 V)
fOSC = 700 kHz (ROSC = 200 kΩ)
−20 0
20 40 60 80 100
Ta [°C]
IEXTL vs. Ta (VIN = 3.3 V)
200
180
f_OSC = 700 kHz, MaxDuty = 77% (R_OSC = 200 kΩ, R_Duty = 300 kΩ)
160
140
IEXTL
[mA]
120
100
80
60
40
20
0
−40 −20 0 20 40 60 80 100
Ta [°C]
1400
1200
fOSC vs. Ta (VIN = 3.3 V)
fOSC = 1133 kHz (ROSC = 120 kΩ)
1000
fOSC 800
[kHz] ₆₀₀
400
fOSC = 700 kHz (ROSC = 200 kΩ)
fOSC = 286 kHz (ROSC = 510 kΩ)
200
0
−40 −20 0
20 40 60 80 100
Ta [°C]
24