SC401B View Datasheet(PDF) - Semtech Corporation
Part Name
Description
Manufacturer
SC401B Datasheet PDF : 32 Pages
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SC401B
Typical Characteristics (continued)
Characteristics in this section are based on using the Typical Application Circuit on page 8.
Load Regulation vs. Temperature — FCM
VDD = 5V, VOUT = 1.5V
1.535
Load Regulation vs. Temperature — FCM
VDD = 3.3V, VOUT = 1.5V
1.535
1.530
1.530
1.525
1.520
VIN = 12V TA = 25°C
VIN = 12V TA = -40°C
VIN = 12V TA = 85°C
1.515
1.510
VIN = 5V TA = 85°C
VIN = 5V TA = -40°C
VIN = 5V TA = 25°C
1.505
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
IOUT (A)
Load Regulation vs. Temperature — PSAVE
VDD = 5V, VOUT = 1.5V
1.535
1.530
1.525
1.520
1.515
1.510
VIN = 12VTA = 25°C
VIN = 12V TA = -40°C
VIN = 12V TA = 85°C
VIN = 5V TA = 85°C
VIN = 5V TA = 25°C
VIN = 5V TA = -40°C
1.505
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
IOUT (A)
Efficiency Variation with VOUT— PSAVE
VDD = 5V, VIN = 12V, L = 2.2uH (4.6m Ω) for VOUT = 2.5V, 3.3V and 5V
100
VOUT = 5V
VOUT = 2.5V
VOUT = 3.3V
95
VOUT = 1.5V
90
VOUT = 1V
85
80
75
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
IOUT (A)
1.525
1.520
1.515
1.510
VIN = 12V TA = -40°C
VIN = 12V TA = 85°C
VIN = 12V TA = 25°C
VIN = 5V TA = -40°C
VIN = 5V TA = 25°C
VIN = 5V TA = 85°C
1.505
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
IOUT (A)
Load Regulation vs. Temperature — PSAVE
VDD = 3.3V, VOUT = 1.5V
1.535
1.530
1.525
1.520
1.515
1.510
VIN = 12V TA = -40°C
VIN = 12V TA = 25°C
VIN = 12V TA = 85°C
VIN = 5V TA = -40°C
VIN = 5V TA = 25°C
VIN = 5V TA = 85°C
1.505
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
IOUT (A)
Efficiency/Power Loss — PSAVE
VOUT = 1.5V, VIN = 12V
100
0.10
95
External
0.09
Bias
90
0.08
85
0.07
80
LDO
0.06
Bias
75
0.05
70
0.04
65
0.03
60
0.02
LDO minus External
55
0.01
50
0.000
0.001
0.010
0.100
IOUT (A)
1.000
10.000
0.00
100.000
11
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