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LTM8049 Datasheet(PDF) 6 Page - Linear Technology

Part # LTM8049
Description  EN55022B Compliant 58V, 4A Step-Down DC/DC 關Module Regulator
PDF  32 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTM8049 Datasheet(HTML) 6 Page - Linear Technology

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LTM4653
6
Rev 0
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted.
Efficiency vs Load Current at
5VIN, Forced Continuous Mode
Efficiency vs Load Current at
12VIN, Forced Continuous Mode
Efficiency vs Load Current at
15VIN, Forced Continuous Mode
Efficiency vs Load Current at
24VIN, Forced Continuous Mode
Efficiency vs Load Current at
36VIN, Forced Continuous Mode
Efficiency vs Load Current at
48VIN, Forced Continuous Mode
3.3V Transient Response, 48VIN
12V Transient Response, 48VIN
1V Transient Response, 24VIN
1.2VOUT, 400kHz
1.5VOUT, 400kHz
1.8VOUT, 400kHz
2.5VOUT, 400kHz
3.3VOUT, 400kHz
1.0VOUT, 400kHz
65
70
75
80
85
90
95
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
LOAD CURRENT (A)
4653 G01
1.5VOUT, 400kHz
1.8VOUT, 400kHz
2.5VOUT, 400kHz
3.3VOUT, 400kHz
5.0VOUT, 400kHz
1.2VOUT, 400kHz
1.0VOUT, 400kHz
65
70
75
80
85
90
95
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
LOAD CURRENT (A)
4653 G02
1.8VOUT, 400kHz
2.5VOUT, 400kHz
3.3VOUT, 400kHz
5.0VOUT, 450kHz
12VOUT, 500kHz
1.5VOUT, 400kHz
1.2VOUT, 400kHz
1.0VOUT, 400kHz
60
65
70
75
80
85
90
95
100
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
LOAD CURRENT (A)
4653 G03
2.5VOUT, 400kHz
3.3VOUT, 400kHz
5.0VOUT, 550kHz
12VOUT, 800kHz
15VOUT, 750kHz
1.0VOUT, 400kHz
1.2VOUT, 400kHz
1.5VOUT, 400kHz
1.8VOUT, 400kHz
55
60
65
70
75
80
85
90
95
100
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
LOAD CURRENT (A)
4653 G04
5VOUT, 575kHz
12VOUT, 1.1MHz
15VOUT, 1.2MHz
24VOUT, 1.2MHz
1.5VOUT, 400kHz
1.8VOUT, 400kHz
2.5VOUT, 400kHz
55
60
65
70
75
80
85
90
95
100
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
LOAD CURRENT (A)
4653 G05
3.3VOUT, 400kHz
3.3VOUT, 400kHz
5.0VOUT, 600kHz
12VOUT, 1.2MHz
15VOUT, 1.4MHz
24VOUT, 1.5MHz
2.5VOUT, 400kHz
60
65
70
75
80
85
90
95
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
LOAD CURRENT (A)
4653 G06
40µs/DIV
VOUT
50mV/DIV
AC-COUPLED
IOUT
2A/DIV
4653 G07
FIGURE 30 CIRCUIT, 48VIN,
CINH = CD = 4.7µF, COUT = 2 x 100µF,
RfSET = N/A, RISET = 66.5k,
CTH = 10nF, RTH = 604,
REXTVCC = N/A, CEXTVCC = N/A,
2A to 4A LOAD STEP AT 2A/µs
40µs/DIV
VOUT
100mV/DIV
AC-COUPLED
IOUT
2A/DIV
4653 G08
FIGURE 30 CIRCUIT, 48VIN,
CINH = CD = 4.7µF, COUT = 2 x 22µF,
RfSET = 124k, RISET = 240k,
CTH = 10nF, RTH = 562,
REXTVCC = 49.9, CEXTVCC = 1µF,
2A to 4A LOAD STEP AT 2A/µs
40µs/DIV
VOUT
50mV/DIV
AC-COUPLED
IOUT
2A/DIV
4653 G09
FIGURE 30 CIRCUIT, 24VIN,
CINH = CD = 4.7µF, COUT = 3 x 100µF,
RfSET = N/A, RISET = 20k,
CTH = 6.8nF, RTH = 681,
REXTVCC = N/A, CEXTVCC = N/A,
2A to 4A LOAD STEP AT 2A/µs



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