s-8337aaca-t8t1g Seiko Instruments Inc., s-8337aaca-t8t1g Datasheet - Page 23

• Manufacturer Part Number: s-8337aaca-t8t1g
• Description: Step-up, 1.2 Mhz High-frequency, Pwm Control Switching Regulator Controller
• Manufacturer: Seiko Instruments Inc.

Rev.3.1
I
[μA]
I
[mA]
I
[μA]
SS1
EXTH
FB
Characteristics (Typical Data)
1. Example of Major Temperature Characteristics (Ta = − 40 to 85 ° C)
–0.02
–0.04
–0.06
–0.08
–0.10
–200
–180
–160
–140
–120
–100
0.10
0.08
0.06
0.04
0.02
700
600
500
400
300
200
100
–80
–60
–40
–20
0
0
0
−40
−40
−40
_00
STEP-UP, 1.2 MHz HIGH-FREQUENCY, PWM CONTROL SWITCHING REGULATOR CONTROLLER
f
OSC
−20
−20
−20
= 700 kHz, MaxDuty = 77% (R
f
OSC
f
f
OSC
OSC
I
I
EXTH
= 286 kHz (R
I
SS1
= 1133 kHz (R
= 700 kHz (R
FB
0
0
0
vs. Ta (V
vs. Ta (V
vs. Ta (V
20
20
20
Ta [°C]
Ta [°C]
Ta [°C]
OSC
OSC
OSC
IN
40
40
40
IN
= 510 kΩ)
IN
OSC
= 200 kΩ)
= 3.3 V)
= 3.3 V)
= 120 kΩ)
= 3.3 V)
= 200 kΩ, R
60
60
60
Seiko Instruments Inc.
Duty
80
80
80
= 300 kΩ)
100
100
100
I
[μA]
I
[mA]
f
[kHz]
SSS
OSC
EXTL
1400
1200
1000
200
180
160
140
120
100
800
600
400
200
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
80
60
40
20
0
0
0
−40
−40
−40
f
OSC
−20
−20
−20
= 700 kHz, MaxDuty = 77% (R
I
I
EXTL
f
SSS
OSC
f
f
0
0
f
0
OSC
OSC
OSC
f
vs. Ta (V
OSC
vs. Ta (V
vs. Ta (V
= 1133 kHz (R
= 700 kHz (R
= 286 kHz (R
20
20
20
= 700 kHz (R
Ta [°C]
Ta [°C]
Ta [°C]
S-8337/8338 Series
40
40
40
IN
IN
IN
OSC
= 3.3 V)
= 3.3 V)
= 3.3 V)
= 200 kΩ, R
OSC
OSC
OSC
OSC
60
60
60
= 200 kΩ)
= 510 kΩ)
= 120 kΩ)
= 200 kΩ)
Duty
80
= 300 kΩ)
80
80
100
100
100
23