ISL78205 Datasheet, PDF (9/16 Pages) Intersil Corporation – 2.5A Buck Controller with Integrated High-Side MOSFET

ISL78205
Typical Performance Curves
100
95 ^6V
90
85
12V
80
24V
75
40V
70
65
60
55
50
45
40
35
30
0.0
0.5
1.0
1.5
2.0
2.5
LOAD CURRENT (A)
FIGURE 3. EFFICIENCY, SYNCHRONOUS BUCK, 500kHz, V_OUT 5V,
T_A = +25°C
100
95 ^6V
90
85
80
75
70
65
60
55
50
45
40
35
30
0.0
12V
40V
0.5
1.0
1.5
LOAD CURRENT (A)
24V
2.0
2.5
FIGURE 4. EFFICIENCY, SYNCHRONOUS BUCK, 500kHz,
V_OUT 3.3V, T_A = +25°C
4.970
4.968
4.966
4.964
4.962
4.960
4.958
4.956
4.954
4.952
4.950
0.0
24V
6V
0.5
12V
1.0
1.5
LOAD CURRENT (A)
40V
2.0
2.5
FIGURE 5. LOAD REGULATION, V_OUT 5V, T_A = +25°C
4.970
4.968
4.966
4.964
4.962
I_O = 0A
4.960
4.958
4.956
4.954
I_O = 2A _{IO = 1A}
4.952
4.950
0
5 10 15 20 25 30 35 40 45 50
INPUT VOLTAGE (V)
FIGURE 6. LINE REGULATION, V_OUT 5V, T_A = +25°C
85
80
75
70
65
60
55
50
45
40
35
30
25
0
V_OUT = 12V
V_OUT = 20V
V_OUT = 5V
5 10 15 20 25 30 35 40 45 50
V_IN (V)
FIGURE 7. IC DIE TEMPERATURE UNDER +25°C AMBIENT
TEMPERATURE, STILL AIR, 500kHz, I_O = 2A
9
85
80
75
70
65
60
55
50
45
40
35
30
25
1.0
V_IN = 40V
V_IN = 6.5V
V_IN = 24V
V_IN = 12V
1.5
2.0
2.5
I_OUT (A)
FIGURE 8. IC DIE TEMPERATURE UNDER +25°C AMBIENT
TEMPERATURE, STILL AIR, 500kHz, V_OUT = 5V
FN7926.0
September 22, 2011