S-8337AAAA-P8T1G Datasheet, PDF (25/51 Pages) Seiko Instruments Inc – SWITCHING REGULATOR CONTROLLER

STEP-UP, 1.2 MHz HIGH-FREQUENCY, PWM CONTROL SWITCHING REGULATOR CONTROLLER
Rev.4.0_01
S-8337/8338 Series
100
90
80
70
MaxDuty ⁶⁰
[%]
50
40
30
20
10
0
−40
MaxDuty vs. Ta (VIN = 3.3 V)
MaxDuty = 88.5% (R_OSC = 200 kΩ, R_Duty = 100 kΩ)
MaxDuty = 77% (R_OSC = 200 kΩ, R_Duty = 300 kΩ)
MaxDuty = 47% (R_OSC = 200 kΩ, R_Duty = 820 kΩ)
−20 0 20 40 60 80 100
Ta [°C]
70.0
60.0
tPRO vs. Ta (VIN = 3.3 V)
tPRO = 50 ms (CSP = 0.1 μF)
50.0
tPRO 40.0
[ms] _30.0
20.0
10.0
0
−40 −20 0
20 40 60 80 100
Ta [°C]
0.35
VUVLOHYS vs. Ta
0.30
0.25
VUVLOHYS = 0.3 V
V_UVLOHYS 0.20
[V] _0.15
0.10
0.05
VUVLOHYS = 0.1 V
0
−40 −20 0
20 40 60 80 100
Ta [°C]
ICCL vs. Ta (VIN = 3.3 V)
100
90
80
70
ICCL
[μA]
60
50
40
30
20
10
0
−40 −20 0 20 40 60 80 100
Ta [°C]
25.0
20.0
tSS vs. Ta (VIN = 3.3 V)
tSS = 20 ms
tSS ^15.0
[ms] _10.0
tSS = 10 ms
5.0
0
−40 −20 0
20 40 60 80 100
Ta [°C]
VUVLO vs. Ta
2.5
2.0
VUVLO ^1.5
[V] _1.0
VUVLO = 2.3 V
VUVLO = 1.5 V
0.5
0
−40 −20 0
20 40 60 80 100
Ta [°C]
–100
ICCH vs. Ta (VIN = 3.3 V)
–90
–80
–70
ICCH
[μA]
–60
–50
–40
–30
–20
–10
0
−40 −20 0 20 40 60 80 100
Ta [°C]
VRTLT vs. Ta (VIN = 3.3 V)
1.2
1.0
0.8
VRTLT
[V]
0.6
0.4
0.2
0
−40 −20 0
20 40 60 80 100
Ta [°C]
25