S-8550 SII [Seiko Instruments Inc], S-8550 Datasheet - Page 17

• Manufacturer Part Number: S-8550
• Description: STEP-DOWN, BUILT-IN FET, SYNCHRONOUS RECIFICATION, PWM CONTROL SWITCHING REGULATORS
• Manufacturer: SII [Seiko Instruments Inc]

STEP-DOWN, BUILT-IN FET, SYNCHRONOUS RECTIFICATION, PWM CONTROL SWITCHING REGULATORS
Rev.2.1
3. Examples of Transient Response Characteristics
3. 2 Shutdown pin response (V
2. 7 ON/OFF pin input voltage“H” (V
2. 9 UVLO detection voltage (V
3. 1 Powering ON (V
−1
−1
(1) I
4
3
2
1
0
(1) I
4
3
2
1
0
(Unless otherwise specified, the used parts are ones shown in
−0.2
−0.2
1.80
1.75
1.70
1.65
1.60
1.55
1.50
1.45
1.40
0.9
0.8
0.7
0.6
0.5
0.4
0.3
_01
OUT
OUT
−40
−40
0 0.2 0.4
0 0.2 0.4
= 1 mA
= 1 mA
I
I
V
V
V
V
L
L
IN
ON/OFF
OUT
OUT
−25
−25
0.6
0.6
t [ms]
t [ms]
0
0
OUT
0.8
0.8
Ta [°C]
Ta [°C]
= 1.8 V, V
25
25
1.0
1.0
UVLO
SH
) vs. Temperature (Ta)
OUT
) vs. Temperature (Ta)
1.2 1.4
1.2 1.4
V
V
IN
= 1.8 V, V
IN
50
50
V
IN
= 2.0 V
IN
= 0 V → 3.6 V, Ta = 25°C)
= 5.5 V
= 3.6 V
1.6
1.6
Seiko Instruments Inc.
75 85
75 85
0.6
0.4
0.2
0
−0.2
IN
0.6
0.4
0.2
0
−0.2
= 3.6 V, V
External Parts When Measuring Electrical Characteristics .)
2. 8 ON/OFF pin input voltage“L” (V
2. 10 FB voltage (V
ON/OFF
(2) I
(2) I
−1
−1
4
3
2
1
0
4
3
2
1
0
612
608
604
600
596
592
588
= 0 V → 3.6 V, Ta = 25°C)
0.9
0.8
0.7
0.6
0.5
0.4
0.3
OUT
OUT
−0.2
−0.2
−40
−40
= 600 mA
= 600 mA
0 0.2 0.4
0 0.2 0.4
−25
−25
V
I
V
I
V
V
L
L
IN
ON/OFF
OUT
OUT
FB
) vs. Temperature (Ta)
0
0
0.6
0.6
t [ms]
t [ms]
Ta [°C]
Ta [°C]
S-8550/8551 Series
0.8
0.8
SL
25
25
) vs. Temperature (Ta)
1.0
1.0
V
V
V
V
IN
1.2 1.4
1.2 1.4
IN
50
50
V
V
IN
IN
= 5.5 V
= 5.5 V
IN
IN
= 3.6 V
= 3.6 V
= 2.0 V
= 2.0 V
75 85
75 85
1.6
1.6
1.5
1.0
0.5
0
−0.5
1.5
1.0
0.5
0
−0.5
17