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LTC1553 数据表(PDF) 5 Page - Linear Technology

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

LTC1553 数据表(HTML) 5 Page - Linear Technology

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LTC1553
TYPICAL PERFORMANCE CHARACTERISTICS
Soft Start Source Current
vs Temperature
TEMPERATURE (
°C)
–50
250
260
280
290
300
350
320
0
50
75
1553 G10
270
330
340
310
–25
25
100
125
Oscillator Frequency
vs Temperature
TEMPERATURE (
°C)
–50
–9
–8
–7
25
75
1553 G12
–10
–11
–25
0
50
100
125
–12
–13
IMAX Sink Current
vs Temperature
TEMPERATURE (
°C)
–50
150
160
170
180
220
200
–25
25
50
125
1553 G11
210
190
0
75
100
VCC Shutdown Supply Current
vs Temperature
TEMPERATURE (
°C)
–50
25
75
1553 G13
–25
0
50
100
125
88
90
92
86
84
82
80
78
OSCILLATOR FREQUENCY = 300kHz
G1, G2 CAPACITANCE = 1100pF
5500pF
7700pF
2200pF
3300pF
Maximum G1 Duty Cycle
vs Temperature
VCC Operating Supply Current
vs Temperature
TEMPERATURE (
°C)
–50
0.9
1.0
1.2
25
75
1553 G14
0.8
0.7
–25
0
50
100
125
0.6
0.5
1.1
VCC = 5V
fOSC = 300kHz
TEMPERATURE (
°C)
–50
225
25
1553 G15
150
100
–25
0
50
75
50
250
200
175
125
75
100
125
GATE CAPACITANCE (pF)
0
40
50
60
6000
1553 G16
30
20
2000
4000
8000
10
0
70
PVCC = 12V
TA = 25°C
PVCC Supply Current
vs Gate Capacitance
OUTPUT CURRENT (A)
0
0
0.5
1.5
2.0
2.5
4
8
10
18
1553 G17
1.0
26
12
14
16
3.0
Q1 CASE = 90
°C, VOUT = 2.8V
Q1 = 2
× MTD20N03HDL
Q2 = 1
× MTD20N03HDL
RIMAX = 2.7k, RIFB = 20Ω,
SS CAP = 0.01
µF
SHORT-CIRCUIT
CURRENT
Output Over Current Protection
50mV/DIV
5A/DIV
100
µs/DIV
1553 G18
Transient Response



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