SC120 SEMTECH [Semtech Corporation], SC120 Datasheet - Page 9

• Manufacturer Part Number: SC120
• Description: Low Voltage Synchronous Boost Converter
• Manufacturer: SEMTECH [Semtech Corporation]

Typical Characteristics (continued)
100
90
80
70
60
50
40
30
20
10
80
60
40
20
50
40
30
20
10
0
0
0
0.5
0.5
0.7
Startup Max. Load Current vs. V
Startup Max. Load Current vs. V
Startup Max. Load Current vs. V
FB grounded
R1 = 499k Ω , R2 = 1M Ω
R1 = 1.37M Ω , R2 = 590k Ω
T
T
0.75
A
A
= 25°C
= 25°C
0.8
1
1
0.9
T
A
1.5
= 25°C
1.25
T
A
1
= 85°C
1.5
T
A
2
= 85°C
T
V
V
V
A
1.75
IN
IN
IN
= 85°C
1.1
(V)
(V)
(V)
T
2.5
A
= –40°C
2
1.2
T
A
2.25
= –40°C
3
T
A
IN
IN
IN
1.3
= –40°C
(V
(V
(V
2.5
OUT
OUT
OUT
3.5
1.4
2.75
= 1.8V)
= 3.3V)
= 4.0V)
PRELIMINARY
3
4
1.5
160
140
120
100
160
140
120
100
160
140
120
100
80
60
40
20
80
60
40
20
Startup Min. Load Resistance vs. V
80
60
40
20
Startup Min. Load Resistance vs. V
Startup Min. Load Resistance vs. V
0
0
0
0.5
0.5
0.7
FB grounded
R1 = 1.37M Ω , R2 = 590k Ω
R1 = 499k Ω , R2 = 1M Ω
T
A
T
A
= 25°C
T
0.75
= 25°C
A
T
= 85°C
A
0.8
= 85°C
1
1
0.9
T
A
1.5
= 25°C
1.25
T
A
T
= 85°C
A
T
= –40°C
A
1
= –40°C
1.5
2
V
V
V
1.75
IN
IN
IN
1.1
(V)
(V)
(V)
2.5
2
1.2
2.25
T
3
A
= –40°C
IN
IN
IN
1.3
(V
(V
(V
2.5
OUT
OUT
OUT
3.5
SC120
1.4
2.75
= 1.8V)
= 4.0V)
= 3.3V)
3
4
1.5
9