AIC1642
n TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
3.2
2.8
2.4
2.0
1.6
1.2
0.8
0.4
0.0
-40
-20
0
20
40
60
80
100
Temperature (°C)
Fig. 31 AIC1642-50 SW On Resistance vs. Temperature
100
90
80
70
60
50
40
30
20
10
-40
-20
0
20
40
60
80
100
Temperature (°C)
Fig. 34 AIC1642-50 Supply Current vs. Temperature
■ BLOCK DIAGRAM
VOUT
1.25V REF.
SW
1M
-
+
GND
Enable OSC, 100KHz
■ PIN DESCRIPTIONS
PIN1 : GND - Ground. Must be low imped-
ance; sorer directly to ground
plane.
PIN2 : VOUT - IC supply pin. Connect VOUT
to the regulator output.
PIN3 : SW – Internal drain of N-MOSFET
switch.
9