Diodes ZXLD1371 - Manual (Page 13)

ZXLD1371
ZXLD1371
Document number: DS35436 Rev. 1 - 2
13 of 42
www.diodes.com
February 2012
© Diodes Incorporated
A Product Line of
Diodes Incorporated
Typical Characteristics – Boost Mode – I
LED
= 350mA – GI
RATIO
= 0.23 – Bootstrap comparison
6 5 7 8 10 9 11 12 13 14 15 16 17 18 19 20
V (V)
IN
T = 25 C, L = 33µH
R = 150m , R9 = 120k
R10 = 36k , C = 100µF
A
S
IN
°
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
)
8 LEDs
8 LEDs Bootstrap
6 5 7 8 10 9 11 12 13 14 15 16 17 18 19 20
V (V)
IN
T = 25 C, L = 33µH
R = 150m , R9 = 120k
R10 = 36k , C = 100µF
A
S
IN
°
Ω Ω
Ω
8 LEDs Bootstrap
8 LEDs
0
50
100
150
200
250
300
350
400
450
500
SW
IT
C
H
IN
G
F
R
E
Q
U
EN
C
Y
(k
H
z)
6 5 7 8 10 9 11 12 13 14 15 16 17 18 19 20
V (V)
IN
T = 25 C, L = 33µH
R = 150m , R9 = 120k
R10 = 36k , C = 100µF
A
S
IN
°
Ω Ω
Ω
8 LEDs Bootstrap
8 LEDs
40
50
60
70
80
90
100
E
F
F
IC
IE
N
C
Y
%