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LTC1753 数据表(PDF) 5 Page - Linear Technology

部件名 LTC1753
功能描述  5-Bit Programmable Synchronous Switching Regulator Controller for Pentium III Processor
PDF  24 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC1753 数据表(HTML) 5 Page - Linear Technology

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5
LTC1753
1753fa
Soft-Start Source Current
vs Temperature
Oscillator Frequency
vs Temperature
IMAX Sink Current
vs Temperature
TEMPERATURE (
°C)
–50
250
260
280
290
300
350
320
0
50
75
1753 G10
270
330
340
310
–25
25
100
125
TEMPERATURE (
°C)
–50
150
160
170
180
220
200
–25
25
50
125
1753 G11
210
190
0
75
100
TEMPERATURE (
°C)
–50
–9
–8
25
75
1753 G12
–10
–11
–25
0
50
100
125
–12
–13
–14
–16
–15
VCC Operating Supply Current
vs Temperature
PVCC Supply Current
vs Gate Capacitance
VCC Shutdown Supply Current
vs Temperature
50
µs/DIV
1753 G17
Transient Response, VOUT = 2.8V
Output Over Current Protection
TEMPERATURE (
°C)
–50
0.9
1.0
1.2
25
75
1753 G13
0.8
0.7
–25
0
50
100
125
0.6
0.5
1.1
VCC = 5V
fOSC = 300kHz
TEMPERATURE (
°C)
–50
225
25
1753 G14
150
100
–25
0
50
75
50
250
200
175
125
75
100
125
GATE CAPACITANCE (pF)
0
40
50
60
6000
1753 G15
30
20
2000
4000
8000
10
0
70
PVCC = 12V
TA = 25°C
OUTPUT CURRENT (A)
0
0
0.5
1.5
2.0
2.5
4
8
10
18
1753 G16
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
VOUT
50mV/DIV
0
ILOAD
5A/DIV
10
TYPICAL PERFOR A CE CHARACTERISTICS
Digital Output Low Voltage
vs Sink Current
SINKING CURRENT (mA)
0
0
1.0
2.0
3.0
5
10
15
20
1753 G20
25
4.0
5.0
0.5
1.5
2.5
3.5
4.5
30
VCC = 5V
MEASURED AT PWRGD, FAULT
TA = 100°C
TA = 25°C



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