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LTC1553 数据表(PDF) 4 Page - Linear Technology

部件名 LTC1553
功能描述  5-Bit Programmable Synchronous Switching Regulator Controller
PDF  24 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC1553 数据表(HTML) 4 Page - Linear Technology

  LTC1553_15 Datasheet HTML 1Page - Linear Technology LTC1553_15 Datasheet HTML 2Page - Linear Technology LTC1553_15 Datasheet HTML 3Page - Linear Technology LTC1553_15 Datasheet HTML 4Page - Linear Technology LTC1553_15 Datasheet HTML 5Page - Linear Technology LTC1553_15 Datasheet HTML 6Page - Linear Technology LTC1553_15 Datasheet HTML 7Page - Linear Technology LTC1553_15 Datasheet HTML 8Page - Linear Technology LTC1553_15 Datasheet HTML 9Page - Linear Technology Next Button
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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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