SP6120 Datasheet, PDF (6/22 Pages) Sipex Corporation – Low Voltage, AnyFETTM, Synchronous ,Buck Controller Ideal for 2A to 10A, High Performance, DC-DC Power Converters

TYPICAL PERFORMANCE CHARACTERISTICS
Refer to circuit in Figure 1 with V_IN = 3.3V; V_OUT = 1.9V, R_OSC = 18.7kΩ, and T_AMB = +25°C unless otherwise noted.
100
90
80
70
60
50
0
2
4
6
8
10
Output Current (A)
1.925
1.920
1.915
1.910
1.905
1.900
1.895
1.890
1.885
1.880
1.875
0
1
2
3
4
5
Load Current (A)
Figure 2. Efficiency vs. Output Current
Figure 3. Load Regulation
V_OUT
Gate High
I_OUT(1A/div)
Figure 4. Load Step Response: 0.4A to 2A
V_OUT
Gate High
I_OUT(5A/div)
Figure 5. Load Step Response: 0.4A to 7A
VOUT
VIN
Soft Start
IIN (1A/div)
Figure 6. Start-Up Response: 5A Load
VOUT
VIN
Soft Start
IOUT (5A/div)
Figure 7. Overcurrent: 9A Load
Date: 1/21/05
SP6120 Low Voltage, AnyFET^TM, Synchronous, Buck Controller
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