ISL85001
Typical Performance Curves Unless otherwise noted, operating conditions are: TA = +25°C, VIN = 12V, EN = VDD, L = 22µH,
C9 = 10µF, C11 = 47µF, IOUT = 0A to 1A. See “VIN (Pins 11, 12)” on page 6.
1.0
0.9
0.8
0.7
1.8VOUT
0.6 2.5VOUT
0.5
3.3VOUT
1.5VOUT
0.4
0.3
0.2
0.1
0.00.0
0.2
0.4
0.6
0.8
1.0
OUTPUT LOAD (A)
FIGURE 2. EFFICIENCY vs LOAD, 500kHz, 5VIN
1.0
0.9
3.3VOUT
0.8
0.7
0.6
0.5
1.2VOUT
1.5VOUT
0.4
1.8VOUT
0.3
2.5VOUT
0.2
5VOUT
0.1
0.00.0
0.2
0.4
0.6
0.8
1.0
OUTPUT LOAD (A)
FIGURE 3. EFFICIENCY vs LOAD, 500kHz, 12VIN
1.0
0.9
0.8
0.7
0.6
5VOUT
0.5
1.2VOUT
0.4
1.5VOUT
0.3
1.8VOUT
0.2
2.5VOUT
0.1
0.0
0.0
0.2
0.4
0.6
0.8
1.0
OUTPUT LOAD (A)
FIGURE 4. EFFICIENCY vs LOAD, 500kHz, 25VIN
1.206
1.205
1.204
25VIN
12VIN
1.203
1.202
1.201
1.200
5VIN
1.199
1.198
0.0
0.2
0.4
0.6
0.8
1.0
OUTPUT LOAD (A)
FIGURE 6. VOUT REGULATION vs LOAD, 500kHz, 1.2VOUT
0.8
0.7
0.6
12VIN
0.5
25VIN
0.4
0.3
0.2
0.1
5VIN
0.00.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
OUTPUT LOAD (A)
FIGURE 5. POWER DISSIPATION vs LOAD, 500kHz, 2.5VOUT
1.510
1.509
1.508
25VIN
12VIN
1.507
1.506
1.505
1.504
5VIN
1.503
1.502
0.0
0.2
0.4
0.6
0.8
1.0
OUTPUT LOAD (A)
FIGURE 7. VOUT REGULATION vs LOAD, 500kHz, 1.5VOUT
7
FN6769.1
March 17, 2009