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LTC1553 데이터시트(PDF) 4 Page - Linear Technology

부품명 LTC1553
상세설명  5-Bit Programmable Synchronous Switching Regulator Controller
PDF  24 Pages
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제조업체  LINER [Linear Technology]
홈페이지  http://www.linear.com
Logo LINER - Linear Technology

LTC1553 데이터시트(HTML) 4 Page - Linear Technology

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4
LTC1553
TYPICAL PERFORMANCE CHARACTERISTICS
OUTPUT VOLTAGE (V)
2.775
0
20
60
80
100
140
1553 G01
40
120
2.795
2.825
2.785
2.805
2.815
TOTAL SAMPLE SIZE = 1500
25
°C
100
°C
Typical 2.8V VOUT Distribution
OUTPUT CURRENT (A)
0
2.825
4
1533 G03
2.820
2.815
2.810
2.805
2.800
2.795
2.790
2.785
2.780
2.775
1 2 3
5 6789 10 11 12 13 14
REFER TO TYPICAL APPLICATION
CIRCUIT FIGURE 1
VIN = 5V, PVCC = 12V, TA = 25°C
Load Regulation
LOAD CURRENT (A)
0
60
80
100
4
1533 G02
40
20
50
70
90
A
30
10
0
0.3
2
6
8
10
12
14
B
REFER TO TYPICAL APPLICATION
CIRCUIT FIGURE 1
VIN = 5V, PVCC = 12V, VOUT = 2.8V,
COUT = 330µF ×7, LO = 2µH
A: Q1 = 1
× SUD50N03-10
Q2 = 1
× SUD50N03-10
B: Q1 = 2
× SUD50N03-10
Q2 = 1
× SUD50N03-10
NO FAN
Q1 IS MOUNTED ON 1IN2 COPPER AREA
Over-Temperature Trip Point
vs Temperature
Efficiency vs Load Current
TEMPERATURE (
°C)
–50
1.96
2.08
2.10
2.12
0
50
75
1553 G06
1.92
2.04
2.00
1.94
2.06
1.90
2.02
1.98
–25
25
100
125
INPUT VOLTAGE (V)
4.75
2.825
2.820
2.815
2.810
2.805
2.800
2.795
2.790
2.785
2.780
2.775
5.15
1553 G04
4.85
4.95
5.05
5.25
REFER TO TYPICAL APPLICATION
CIRCUIT FIGURE 1
OUTPUT = NO LOAD
TA = 25°C
Line Regulation
Output Temperature Drift
TEMPERATURE (
°C)
–50
2.860
2.850
2.840
2.830
2.820
2.810
2.800
2.790
2.780
2.770
2.750
2.660
2.740
0
50
75
1553 G05
–25
25
100
125
Error Amplifier Open-Loop
DC Gain vs Temperature
Over-Temperature Driver Disable
vs Temperature
TEMPERATURE (
°C)
–50
1.60
1.62
1.66
1.68
1.70
1.80
1.74
0
50
75
1553 G07
1.64
1.76
1.78
1.72
–25
25
100
125
Error Amplifier Transconductance
vs Temperature
TEMPERATURE (
°C)
–50
1.7
1.9
2.3
25
75
1553 G08
1.5
1.3
–25
0
50
100
125
1.1
0.9
2.1
TEMPERATURE (
°C)
–50
40
45
50
55
60
–25
0
25
50
1553 G09
75
100
125



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