LTC1704BEGN 查看數據表（PDF） - Linear Technology
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LTC1704BEGN
Linear Technology
LTC1704BEGN Datasheet PDF : 28 Pages
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LTC1704/LTC1704B
TYPICAL PERFOR A CE CHARACTERISTICS
VFB vs Temperature
0.812
VCC = 5V
0.808
0.804
0.800
0.796
0.792
0.788
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1704 G01
VFB Line Regulation
0.80
TA = 25°C
0.64
0.48
0.32
0.16
0
–0.16
–0.32
–0.48
–0.64
–0.80
3 3.5 4 4.5 5
VCC (V)
0.10
0.08
0.06
0.04
0.02
0
–0.02
–0.04
–0.06
–0.08
–0.10
5.5 6
1704 G02
VOUTSW Load Regulation
0.6
0.03
TA = 25°C
0
VOUTSW = 1.8V 0
–0.6
– 0.03
–1.2
–0.07
–1.8
–0.10
–2.4
–0.13
–3.0
–0.17
–3.6
–0.20
0
3
6
9
12
15
ILOAD (A)
1704 G03
Switcher Current Limit Threshold
vs Temperature
24
VIN = 5V
22
VOUTSW = 1.8V
∆VOUTSW = –1%
RIMAX = 13.7k
20
QT = QB = 2xFDS6670A
18
16
14
12
10
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1704 G08
VOUTSW 0.5A to 5.5A Load Step
(Burst Mode Operation)
VOUTSW 5A to 10A Load Step
VOUTSW Burst Mode Operation
at 1A Load
100µs/DIV
CH1: VOUTSW = 1.8V, AC 50mV/DIV
CH2: 0.5A to 5.5A LOAD, 5A DIV
1704 G05
50µs/DIV
CH1: VOUTSW = 1.8V, AC 50mV/DIV
CH2: 5A to 10A LOAD, 5A DIV
1704 G06
20µs/DIV
CH1: VOUTSW = 1.8V, AC 20mV/DIV
CH2: VTG, 5V DIV
1704 G07
1704bfa
4
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