SOT-89 Step-Up PFM Switcher with Auto-Load Sense
Typical Performance Characteristics
General conditions for all curves
EFFICIENCY vs. OUTPUT CURRENT
ILC6391CP-30
100
100
EFFICIENCY vs. OUTPUT CURRENT
ILC6391CP-50
EFFICIENCY: EFFI (%)
80
EFFICIENCY: EFFI (%)
V
IN
= 1.8V
80
V
IN
= 3.0V
V
IN
= 1.5V
60
V
IN
= 2.0V
60
V
IN
= 1.0V
40
V
IN
= 1.2V
V
IN
= 1.5V
40
20
L = 22µH (CD105)
R
B
= 300
C
B
= 0.1µF
20
L = 22µH (CD105)
R
B
= 300
C
B
= 0.1µF
0
200
400
600
800
0
0
100
200
300
400
500
0
OUTPUT CURRENT I
OUT
(mA)
OUTPUT CURRENT I
OUT
(mA)
OUTPUT VOLTAGE vs. OUTPUT CURRENT
ILC6391CP-30
4.0
7.0
OUTPUT VOLTAGE vs. OUTPUT CURRENT
ILC6391CP-50
OUTPUT VOLTAGE V
OUT
(V)
6.0
5.0
4.0
V
IN
= 1.5V
3.0
V
IN
= 1.2V
2.0
L = 22µH (CD54)
1.0
0
R
B
= 500
C
B
= 0
0
100
200
300
400
500
V
IN
= 2.0V
V
IN
= 3.0V
OUTPUT VOLTAGE V
OUT
(V)
3.5
V
IN
= 1.8V
3.0
2.5
V
IN
= 1.0V
2.0
1.5
L = 22µH (CD105)
1.0
0.5
0
R
B
= 300
C
B
= 0
20
40
60
80
100
V
IN
= 1.2V
V
IN
= 1.5V
OUTPUT CURRENT I
OUT
(mA)
OUTPUT CURRENT I
OUT
(mA)
OUTPUT VOLTAGE vs. OUTPUT CURRENT
ILC6391CP-30
4.0
6
OUTPUT VOLTAGE vs. OUTPUT CURRENT
ILC6391CP-50
OUTPUT VOLTAGE V
OUT
(V)
OUTPUT VOLTAGE V
OUT
(V)
3.5
V
IN
= 1.8V
3.0
2.5
V
IN
= 1.0V
2.0
1.5
L = 22µH (CD105)
1.0
0.5
0
R
B
= 300
C
B
= 0.1µF
20
40
60
80
100
V
IN
= 1.2V
V
IN
= 1.5V
5
V
IN
= 3.0V
4
V
IN
= 2.0V
3
V
IN
= 1.5V
2
L = 22µH (CD105)
1 R = 300
B
0
C
B
= 0.1µF
0
200
400
600
800
OUTPUT CURRENT I
OUT
(mA)
OUTPUT CURRENT I
OUT
(mA)
RIPPLE VOLTAGE vs. OUTPUT CURRENT
ILC6391CP-30
400
L = 22µF (CD105)
R
B
= 300
p-p
)
RIPPLE VOLTAGE vs. OUTPUT CURRENT
ILC6391CP-50
500
L = 22µF (CD54)
400
p-p
)
300
C
B
= 0
R
B
= 500
C
B
= 0
RIPPLE Vr (mV
RIPPLE Vr (mV
V
IN
= 1.8V
200
V
IN
= 1.5V
100
V
IN
= 1.2V
300
V
IN
= 3.0V
200
V
IN
= 2.0V
100
V
IN
= 1.5V
0
0
100
200
300
400
500
0
0
100
200
300
400
500
OUTPUT CURRENT I
OUT
(mA)
OUTPUT CURRENT I
OUT
(mA)
Impala Linear Corporation
ILC6390 1.1
(408) 574-3939
www.impalalinear.com
Feb 2001
8
IMPALA [ Impala Linear Corporation ]
