Diodes ZXLD1371 - Manual (Page 17)

ZXLD1371
ZXLD1371
Document number: DS35436 Rev. 1 - 2
17 of 42
www.diodes.com
February 2012
© Diodes Incorporated
A Product Line of
Diodes Incorporated
Typical Characteristics – Buck-Boost Mode – R
S
= 150m Ω - I
LED
= 350mA – GI
RATIO
= 0.23
6 5 7 8 10 9 11 12 13 14 15 16 17 18
V (V)
IN
T = 25 C, L = 33µH
R = 150m , R9 = 120k
R10 = 36k
A
S
°
Ω Ω
Ω
0.25
0.27
0.29
0.33
0.31
0.35
0.37
0.39
0.41
0.43
0.45
LE
D
C
U
R
R
EN
T
(A
)
5 LEDs
5 LEDs Bootstrap
5 6 9 14 15 18 8 12 16 17 13 10 11 7
SW
IT
C
H
IN
G
F
R
E
Q
U
EN
C
Y
(
k
H
z)
600
500
400
200
100
0
300
6 5 7 8 10 9 11 12 13 14 15 16 17 18
V (V)
IN
90
EFF
ICI
E
N
C
Y
%
5 LEDs Bootstrap
5 LEDs
T = 25 C, L = 33H
R = 150m , R9 = 120k ,
R10 = 36k , C = 100µF
A
S
IN
°
Ω Ω
Ω
85
80
50
45
40
75
70
65
60
55