0.5A, 300kHz, SO-8 PWM/PFM Step Down Converter with Shutdown
Typical Performance Characteristics
General conditions for all curves: Circuit of figure 1; L = 20µH (Sumida, CD54), CIN = 47µF (tantalum) with 0.1µF (ceramic),
CL = 47µH (tantalum) MA735 (Matsushita) schottky diode, CSS = 4700pF (ceramic), TA = 25°C unless otherwise noted.
MINIMUM OPERATING VOLTAGE vs. AMBIENT TEMPERATURE
EFFICIENCY vs. AMBIENT TEMPERATURE
ILC6377SO-33
ILC6377SO-33
100
1.8
1.6
90
80
1.4
1.2
70
1.0
0.8
60
50
-40
-20
0
20
40
60
80
-40
-20
0
20
40
60
80
AMBIENT TEMP.: Ta(°C)
AMBIENT TEMP.: Ta(°C)
CE “L” VOLTAGE vs. AMBIENT TEMPERATURE
SOFT-START TIME vs. AMBIENT TEMPERATURE
ILC6377SO-33
ILC6377SO-33
16
1.0
0.8
0.6
0.4
12
8
4
0
0.2
0.0
-40
-20
0
20
40
60
80
-40
-20
0
20
40
60
80
AMBIENT TEMP.: Ta(°C)
AMBIENT TEMP.: Ta(°C)
CE “H” VOLTAGE vs. AMBIENT TEMPERATURE
ILC6377SO-33
1.0
0.8
0.6
0.4
0.2
0.0
-40
-20
0
20
40
60
80
AMBIENT TEMP.: Ta(°C)
Impala Linear Corporation
ILC6377 1.3
www.impalalinear.com
(408) 574-3939
June 1999
10
IMPALA [ Impala Linear Corporation ]
