Diodes ZXLD1371 - Manual (Page 16)

ZXLD1371
ZXLD1371
Document number: DS35436 Rev. 1 - 2
16 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
5 17 20 14 11 8
0.450
L
E
D
C
U
R
R
E
N
T
(
A
)
0.250
0.425
0.275
0.300
0.400
0.375
0.325
0.350
T = 25°C,
A
L = 33µH,
Rs = 150m R9 = 120k
R10 = 36k V = V
Ω, Ω,
Ω,
AUX IN
1 LED
2 LEDs
3 LEDs 4 LEDs
5 LEDs
6 LEDs
8 LEDs
9 LEDs
7 LEDs
5 8 17 20 14
V (V)
IN
900
800
100
0
500
300
400
SW
IT
C
HIN
G
F
R
E
Q
UEN
C
Y
(k
Hz
) 700
200
600
T = 25°C,
A
L = 33µH,
Rs = 150m R9 = 120k
R10 = 36k V = V
Ω, Ω,
Ω,
AUX IN
5 17 20 14 11 8
90
EF
FI
C
IEN
C
Y
%
40
85
45
80
50
75
55
70
60
65 1 LED
2 LEDs
3 LEDs 4 LEDs
5 LEDs
6 LEDs
7 LEDs
8 LEDs
9 LEDs