ISL78200 Datasheet, PDF (10/19 Pages) Intersil Corporation – 2.5A Regulator with Integrated High-Side MOSFET for Synchronous Buck or Boost Buck Converter

ISL78200
Performance Curves (Continued)
200
180
V_IN = 12V
160
140
120
100
V_IN = 24V
80
60
V_IN = 40V
40
20
0
-50
-25
0
25
50
75
100
125
AMBIENT TEMPERATURE (°C)
FIGURE 11. INPUT QUIESCENT CURRENT UNDER NO LOAD,
PFM MODE, AUXVCC CONNECTED TO V_OUT, V_OUT = 5V
150
145
140
135
130
125
120
115
110
105
0 5 10 15 20 25 30 35 40 45 50
V_IN (V)
FIGURE 12. IC DIE TEMPERATURE UNDER +105°C AMBIENT
TEMPERATURE, 100 CFM, 500kHz, V_OUT = 5V, I_O = 2A
85
80
75
70
65
60
V_OUT = 12V
55 _{VOUT = 9V}
50
V_OUT = 20V
45
V_OUT = 5V
40
35
30
25
0 5 10 15 20 25 30 35 40 45 50
V_IN (V)
FIGURE 13. IC DIE TEMPERATURE UNDER +25°C AMBIENT
TEMPERATURE, STILL AIR, 500kHz, I_O = 2A
85
80
75
70
65
60
55
50
45
40
35
30
25
1.0
V_IN = 40V
V_IN = 24V ^{VIN = 12V}
1.5
2.0
2.5
I_OUT (A)
FIGURE 14. IC DIE TEMPERATURE UNDER +25°C AMBIENT
TEMPERATURE, STILL AIR, 500kHz, V_OUT = 9V
V_OUT 2V/DIV
PHASE 20V/DIV
2ms/DIV
FIGURE 15. SYNCHRONOUS BUCK MODE, V_IN 36V, I_O 2A,
ENABLE ON
10
V_OUT 2V/DIV
PHASE 20V/DIV
2ms/DIV
FIGURE 16. SYNCHRONOUS BUCK MODE, V_IN 36V, I_O 2A,
ENABLE OFF
FN7641.0
September 22, 2011