ISL65426 Datasheet, PDF (11/22 Pages) Intersil Corporation – 6A Dual Synchronous Buck Regulator with Integrated MOSFETs

ISL65426
Typical Performance Curves
Circuit of Figure 2. V_IN = 5V, I_OUT1 = 4A, I_OUT2 = 2A, T_A = -10°C to +100°C unless otherwise
noted. Typical values are at T_A = +25°C. (Continued)
1.845
1.825
1.805
3.3V_IN
2.5V_IN
1.785
1.765
5.5V_IN
1.745
0.1
0.5
1.0
1.5
2.0
OUTPUT LOAD (A)
FIGURE 16. V_OUT2 = 1.8V REGULATION vs LOAD
1.845
1.825
1.805
NO LOAD
1.785
1.765
2A LOAD
1A LOAD
1.745
2.0 2.5
3.0 3.5
4.0
4.5 5.0 5.5
INPUT VOLTAGE (V)
FIGURE 17. V_OUT2 = 1.8V REGULATION vs VIN
2.565
2.545
2.525
2.505
2.485
2.465
2.445
2.425
0.1
3.3V_IN
4V_IN
5.5V_IN
0.5
1.0
1.5
2.0
OUTPUT LOAD (A)
FIGURE 18. V_OUT2 = 2.5V REGULATION vs LOAD
3.400
3.380
3.360
3.340
3.320
3.300
3.280
3.260
3.240
3.220
3.200
0.1
5.5V_IN
4.5V_IN
0.5
1.0
OUTPUT LOAD (A)
5V_IN
1.5
2.0
FIGURE 20. V_OUT2 = 3.3V REGULATION vs LOAD
2.565
2.545
2.525
2.505
2.485
2.465
2.445
2.425
2.0
NO LOAD
2A LOAD ^{1A LOAD}
2.5
3.0 3.5
4.0
4.5
5.0 5.5
INPUT VOLTAGE (V)
FIGURE 19. V_OUT2 = 2.5V REGULATION vs VIN
3.400
3.380
3.360
3.340
3.320
3.300
3.280
3.260
3.240
3.220
3.200
4.0 4.25
NO LOAD
2A LOAD
4.5
4.75
5.0
INPUT VOLTAGE (V)
1A LOAD
5.25
5.5
FIGURE 21. V_OUT2 = 3.3V REGULATION vs VIN
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FN6340.1
November 14, 2006