SC120ULTRT Просмотр технического описания (PDF) - Semtech Corporation
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SC120ULTRT Datasheet PDF : 32 Pages
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SC120
Typical Characteristics — V = 4.0V (continued)
OUT
Temperature Regulation — PSAVE Mode (VOUT = 4.0V)
R1 = 931kΩ, R2 = 402kΩ, L = 4.7μH, CFB = 2.2pF, IOUT = 5mA
4.1
Temperature Regulation — PWM Mode (V = 4.0V)
OUT
R1 = 931kΩ, R2 = 402kΩ, L = 4.7μH, CFB = 2.2pF, IOUT = 75mA
4.1
V = 3.2V
IN
4.05
V = 1.2V
IN
V = 2.4V
IN
4
3.95
4.05
VIN = 3.2V
4
VIN = 2.4V
3.95
V = 1.2V
IN
3.9
3.9
3.85
-50
-25
0
25
50
75
100
Junction Temperature (oC)
Startup Maximum Load Current vs. VIN (VOUT = 4.0V)
R1 = 931kΩ, R2 = 402kΩ, L = 4.7μH, CFB = 2.2pF
100
90
80
TA = 85°C
70
60
50
40
TA = 25°C
T = –40°C
A
30
20
10
0
0.6
1
1.4
1.8
2.2
2.6
3
VIN (V)
3.4
3.8
3.85
-50
-25
0
25
50
75
100
Junction Temperature (oC)
Startup Minimum Load Resistance vs. V (V = 4.0V)
IN OUT
R1 = 931kΩ, R2 = 402kΩ, L = 4.7μH, CFB = 2.2pF
160
140
T = 25°C
A
120
100
80
T = –40°C
A
60
40
T = 85°C
A
20
0
0.6
1
1.4
1.8
2.2
2.6
3
VIN (V)
3.4
3.8
Maximum I vs. V (V = 4.0V)
OUT
IN OUT
R1 = 931kΩ, R2 = 402kΩ, L = 4.7μH, CFB = 2.2pF
500
450
T = 25°C
A
400
350
T = –40°C
A
300
250
200
TA = 85°C
150
100
50
0
0.6 1
1.4 1.8 2.2 2.6 3
VIN (V)
3.4 3.8
10
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