s-8551 Seiko Instruments Inc., s-8551 Datasheet - Page 21

• Manufacturer Part Number: s-8551
• Description: Step-down, Built-in Fet, Synchronous Rectification, Pwm Control Switching Regulators
• Manufacturer: Seiko Instruments Inc.

STEP-DOWN, BUILT-IN FET, SYNCHRONOUS RECTIFICATION, PWM CONTROL SWITCHING REGULATORS
Rev.2.1
3. 2 V
3. 3 V
3. 4 V
(1) V
(1) V
(1) V
50
40
30
20
10
50
40
30
20
10
50
40
30
20
10
_01
0
0
0
OUT
OUT
OUT
IN
IN
IN
0
0
0
= 3.6 V
= 3.6 V
= 5.5 V
= 1.8 V (R
= 3.3 V (R
= 4.0 V (R
1
1
1
FB1
FB1
FB1
= 36 kΩ, R
= 36 kΩ, R
= 51 kΩ, R
I
I
I
OUT
OUT
OUT
10
10
10
[mA]
[mA]
[mA]
FB2
FB2
FB2
100
100
100
= 18 kΩ)
= 8 kΩ)
= 9 kΩ)
Seiko Instruments Inc.
1000
1000
1000
(2) V
(2) V
50
40
30
20
10
50
40
30
20
10
IN
IN
0
0
= 5.5 V
= 5.5 V
0
0
1
1
I
I
OUT
OUT
S-8550/8551 Series
10
10
[mA]
[mA]
100
100
1000
1000
21