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LTM4657 Scheda tecnica(PDF) 11 Page - Analog Devices

Il numero della parte LTM4657
Spiegazioni elettronici  20VIN, 20A Step-Down DC-to-DC μModule Regulator
PDF  38 Pages
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

LTM4657 Scheda tecnica(HTML) 11 Page - Analog Devices

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Data Sheet
LTM4640
analog.com
Rev. 0
11 of 38
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 4. Efficiency vs. Load Current from 3.3VIN
Figure 5. Efficiency vs. Load Current from 5VIN
Figure 6. Efficiency vs. Load Current from 12VIN
Figure 7. 1VOUT Transient Response
Figure 8. 1.5VOUT Transient Response
Figure 9. 2.5VOUTTransient Response
1.0VOUT, 600kHz
1.2VOUT, 600kHz
1.5VOUT, 600kHz
1.8VOUT, 600kHz
2.5VOUT, 600kHz
LOAD CURRENT (A)
0
2
4
6
8
10
12
14
16
18
20
70
75
80
85
90
95
100
1.0VOUT, 600kHz
1.2VOUT, 700kHz
1.5VOUT, 800kHz
1.8VOUT, 800kHz
2.5VOUT, 800kHz
3.3VOUT, 800kHz
LOAD CURRENT (A)
0
2
4
6
8
10
12
14
16
18
20
70
75
80
85
90
95
100
1.0VOUT, 600kHz
1.2VOUT, 700kHz
1.5VOUT, 800kHz
1.8VOUT, 900kHz
2.5VOUT, 1000kHz
3.3VOUT, 1000kHz
LOAD CURRENT (A)
0
2
4
6
8
10
12
14
16
18
20
70
75
80
85
90
95
100
100µs/DIV
LOAD STEP
CURRENT
5A/DIV
VOUT
AC-COUPLED
100mV/DIV
VIN = 12V, VOUT = 1V, fSW = 600kHz
COUT = 4 × 220µF + 2 × 2.2µF + 1µF CERAMIC CAPACITOR
INTERNAL COMPENSATION, COMPa CONNECT TO
COMPb, CFF = 100pF, 10A ~ 15A (25%) LOAD STEP
10A/μs SLEW RATE
100µs/DIV
LOAD STEP
CURRENT
5A/DIV
VOUT
AC-COUPLED
100mV/DIV
VIN = 12V, VOUT = 1.5V, fSW = 800kHz
COUT = 4 × 220µF + 2 × 2.2µF + 1µF CERAMIC CAPACITOR
INTERNAL COMPENSATION, COMPa CONNECT TO
COMPb, CFF = 100pF, 10A ~ 15A (25%) LOAD STEP
10A/μs SLEW RATE
100µs/DIV
LOAD STEP
CURRENT
5A/DIV
VOUT
AC-COUPLED
100mV/DIV
VIN = 12V, VOUT = 2.5V, fSW = 1MHz
COUT = 4 × 220µF + 2 × 2.2µF + 1µF CERAMIC CAPACITOR
INTERNAL COMPENSATION, COMPa CONNECT TO
COMPb, CFF = 100pF, 10A ~ 15A (25%) LOAD STEP
10A/μs SLEW RATE



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