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SC4624SETRT Scheda tecnica(PDF) 7 Page - Semtech Corporation

Il numero della parte SC4624SETRT
Spiegazioni elettronici  Low Input Voltage, High Efficiency, 4A Integrated FET Synchronous Step down DC/DC Regulator
PDF  20 Pages
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Produttore elettronici  SEMTECH [Semtech Corporation]
Homepage  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC4624SETRT Scheda tecnica(HTML) 7 Page - Semtech Corporation

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 2007 Semtech Corp.
www.semtech.com
SC4624
POWER MANAGEMENT
Operation
Typical Performance Characteristics (Cont.)
Typical Performance Characteristics (Cont.)
Figure 11. High-Side P-MOSFET
Figure 12. Low-Side N-MOSFET
Figure 7. Over Load Hiccup
Figure 9. Synchronization
Figure 10. Efficiency(V
IN)
V
OUT
SS
V
PHASE
Figure 8. Thermal Shutdown Protection@0A
V
OUT
SS
V
PHASE
Sync
Signal
V
PHASE
Output Current(A)
70
80
90
100
110
120
130
1
2
3
4
2.5VIN
3.3VIN
5VIN
I
OUT (A)
Internal PMOS R
DSON @ Room Temperature
Internal NMOS R
DSON @ Room Temperature
50
55
60
65
70
75
80
1
2
3
4
2.5VIN
3.3VIN
5VIN
I
OUT (A)
5.0V/DIV
3.0V/DIV
0.6V/DIV
2.0V/DIV
2.0V/DIV
0.6V/DIV
3V/DIV
5.0V/DIV
Test condition: 5Vin, 1Vout
SS
Vphase
Over current protection
Vout
100ms/DIV
Circuit condition: Application circuit#1, 5V
IN, 1VOUT
Test condition: 5Vin, 1Vout
SS
Vphase
Thermal protection
Vout
1s/DIV
Efficiency
5Vin
3.3Vin
2.5Vin
SYNC
SYNC
Vphase
1us/DIV
External clock singal=650kHz, duty=50%



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