st8r00 STMicroelectronics, st8r00 Datasheet - Page 11

• Manufacturer Part Number: st8r00
• Description: Micropower 1a Synchronous Step-up Dc-dc Converter
• Manufacturer: STMicroelectronics

Figure 16. Internal leakage current vs
Figure 18. NMOS switch on resistance vs
Figure 20. Efficiency vs output current (for
0.09
0.09
0.08
0.08
0.07
0.07
0.06
0.06
0.05
0.05
0.04
0.04
0.03
0.03
0.02
0.02
0.01
0.01
500
500
400
400
300
300
200
200
100
100
1.00
1.00
0.90
0.90
0.80
0.80
0.70
0.70
0.60
0.60
0.50
0.50
0.40
0.40
0.30
0.30
0.20
0.20
0.10
0.10
0.00
0.00
0.1
0.1
0
0
0
0
-75
-75
-75
-75
0
0
V
V
I
I
-50
-50
=V
=V
V
V
-50
-50
100 200 300 400
100 200 300 400
I
I
=5V
=5V
INH
INH
temperature
temperature
ST8R00W)
=5V, V
=5V, V
-25
-25
-25
-25
FB
FB
=2V, V
=2V, V
V
V
0
0
I
I
0
0
= V
= V
INH
INH
LX
LX
=4V, No Inductor
=4V, No Inductor
=5V, L=10µH, I
=5V, L=10µH, I
25
25
25
25
I
I
O
O
V
V
T [°C]
T [°C]
T [°C]
T [°C]
O
O
[mA]
[mA]
50
50
@7V
@7V
500 600 700 800 900 1000
500 600 700 800 900 1000
50
50
O
O
75
75
= from 0A to 1A
= from 0A to 1A
75
75
100 125 150 175
100 125 150 175
100 125 150 175
100 125 150 175
Figure 17. Internal leakage current vs
Figure 19. PMOS switch on resistance vs
Figure 21. Efficiency vs output current (for
-0.1
-0.1
1.00
1.00
0.90
0.90
0.80
0.80
0.70
0.70
0.60
0.60
0.50
0.50
0.40
0.40
0.30
0.30
0.20
0.20
0.10
0.10
0.00
0.00
500
500
400
400
300
300
200
200
100
100
0.6
0.6
0.5
0.5
0.4
0.4
0.3
0.3
0.2
0.2
0.1
0.1
0
0
0
0
-75
-75
-75
-75
0
0
V
V
-50
-50
100 200 300 400
100 200 300 400
-50
-50
I
I
=5V
=5V
V
V
I
I
=5 , V
=5 , V
temperature
temperature
ST8R00W)
-25
-25
-25
-25
INH
INH
=GND, V
=GND, V
0
0
0
0
V
V
I
I
= V
= V
FB
FB
25
25
25
25
INH
INH
=2V, V
=2V, V
=5V, I
=5V, I
I
I
V
V
O
O
T [°C]
T [°C]
O
O
T [°C]
T [°C]
@7V
@7V
[mA]
[mA]
500 600 700 800 900 1000
500 600 700 800 900 1000
50
50
50
50
LX
LX
O
O
=from 0A to 1A
=from 0A to 1A
=4V, No Inductor
=4V, No Inductor
75
75
75
75
100 125 150 175
100 125 150 175
100 125 150 175
100 125 150 175
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