Diodes ZXLD1370 - Manual (Page 13)

ZXLD1370
Document number: DS32165 Rev. 5 - 2
13 of 39
www.diodes.com
September 2012
© Diodes Incorporated
ZXLD1370
A Product Line of
Diodes Incorporated
Typical Characteristics
(cont.) Buck-Boost Mode – R
S
= 150mΩ, GI
RATIO
= 0.23, L = 47µH
0.330
0.335
0.340
0.345
0.350
0.355
0.360
0.365
0.370
6.5 8 9.5 11 12.5 14 15.5 17
INPUT VOLTAGE (V)
Figure 18 LED Current vs. Input Voltage & Number of LED
3 LEDs 4 LEDs 5 LEDs 6 LEDs 7 LEDs 8 LEDs
LE
D
C
U
R
R
EN
T
(A
)
0
100
200
300
400
500
600
700
800
6.5 8 9.5 11 12.5 14 15.5 17
INPUT VOLTAGE (V)
Figure 19 Switching Frequency vs. Input Voltage & Number of LED
3 LEDs 4 LEDs 5 LEDs 6 LEDs 7 LEDs 8 LEDs
SW
IT
C
H
IN
G
F
R
E
Q
U
EN
C
Y
(
kH
z)
60
65
70
75
80
85
90
95
100
6.5 8 9.5 11 12.5 14 15.5 17
INPUT VOLTAGE (V)
Figure 20 Efficiency vs. Input Voltage & Number of LED
3 LEDs 4 LEDs 5 LEDs 6 LEDs 7 LEDs 8 LEDs
E
F
F
IC
IE
N
C
Y
(%)