LTC1159 查看數據表（PDF） - Linear Technology
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LTC1159 Datasheet PDF : 20 Pages
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LTC1159
LTC1159-3.3/LTC1159-5
ELECTRICAL CHARACTERISTICS
Note 6: The LTC1159C, LTC1159C-3.3, and LTC1159C-5 are not tested
and not quality assurance sampled at – 40°C and 85°C. These
specifications are guaranteed by design and/or correlation. The LTC1159I,
LTC1159I-3.3 and LTC1159I-5 are guaranteed and tested over the – 40°C
to 85°C operating temperature range.
Note 7: The logic-level power MOSFETs shown in Figure 1 are rated for
VDS(MAX) = 30V. For operation at VIN > 30V, use standard threshold
MOSFETs with EXTVCC powered from a 12V supply. See Applications
Information.
TYPICAL PERFOR A CE CHARACTERISTICS
Efficiency vs Input Voltage
100
FIGURE 1 CIRCUIT
ILOAD = 1A
95
90
NOTE 6
85
80
0
5 10 15 20 25 30 35 40
INPUT VOLTAGE (V)
LTC1159 • TPC01
EXTVCC Pin Current
10
FIGURE 1 CIRCUIT
8
ILOAD = 1A
6
NOTE 6
4
ILOAD = 100mA
2
ILOAD = 0
0
0 5 10 15 20 25 30 35 40
INPUT VOLTAGE (V)
LTC1159 • TPC04
Line Regulation
60
FIGURE 1 CIRCUIT
ILOAD = 1A
40
20
0
NOTE 6
–20
–40
–60
0
5 10 15 20 25 30 35 40
INPUT VOLTAGE (V)
LT1159 • TPC02
VIN Pin Current
500
FIGURE 1 CIRCUIT
400
300
NORMAL
200
NOTE 6
100
0
0
VSHDN2 = 2V
5 10 15 20 25 30 35 40
INPUT VOLTAGE (V)
LTC1159 • TPC05
Load Regulation
20
0
FIGURE 1 CIRCUIT
VIN = 24V
– 20
– 40
– 60
– 80
– 100
0
0.5
1.0
1.5
2.0
2.5
LOAD CURRENT (A)
LTC1159 • TPC03
Operating Frequency
vs (VIN – VOUT)
2.0
VOUT = 5V
T = 0°C
1.5
T = 25°C
T = 70°C
1.0
0.5
0
0
5
10
15
20
25
(VIN – VOUT) VOLTAGE (V)
LTC1159 • TPC06
4
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