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), C
IN
= 47µF (tantalum) with 0.1µF (ceramic),
C
L
= 47µH (tantalum) MA735 (Matsushita) schottky diode, C
SS
= 4700pF (ceramic), T
A
= 25°C unless otherwise noted.
ILC6377SO-33
100
V
IN
= 3.96
L = 22µH (CD54)
80
EFFICIENCY: EFFI(%)
60
6.0V
5.0V
40
20
0
0.1
1
10
100
1000
OUTPUT CURRENT: I
OUT
(mA)
ILC6377SO-33
100
L = 10µH (CD54)
100
ILC6377SO-33
L = 47µH (CD105)
EFFICIENCY: EFFI(%)
80
80
60
5.0V
6.0V
V
IN
= 3.96
EFFICIENCY: EFFI(%)
60
5.0V
8.0V
40
40
V
IN
= 4.0
20
20
0
0.1
1
10
100
1000
0
0.1
1
10
100
1000
OUTPUT CURRENT: I
OUT
(mA)
OUTPUT CURRENT: I
OUT
(mA)
ILC6377SO-50
100
L = 22µH (CD54)
EFFICIENCY: EFFI(%)
80
8.0V
60
V
IN
= 6.0V
10.0V
40
20
0
0.1
1
10
100
1000
OUTPUT CURRENT: I
OUT
(mA)
Impala Linear Corporation
ILC6377 1.3
(408) 574-3939
www.impalalinear.com
June 1999
8
IMPALA [ Impala Linear Corporation ]
