zxld1374 Diodes, Inc., zxld1374 Datasheet - Page 11

• Manufacturer Part Number: zxld1374
• Description: 60v High Accuracy 1.5a Buck/boost/buck-boost Led Driver Converter
• Manufacturer: Diodes, Inc.

ZXLD1374
Document number: DS35032 Rev. 1 - 2
Typical Characteristics –
0.385
0.368
0.350
0.333
0.315
100%
700
600
500
400
300
200
100
95%
90%
85%
80%
75%
70%
0
6.5
6.5
6.5
T = 25 C
L = 33µH
R = 150m
R
R
A
S
GI1
GI2
9 LED s
= 36
= 120
°
m
m
Ω
Ω
Ω
8
8
8
Boost mode – R
11 LED s
Figure 20. Load Current vs. Input Voltage and Number of LED
Figure 21. Frequency vs. Input Voltage and N umber of LED
Figure 22. Efficiency vs. Input Voltage and Number of LED
9.5
9.5
9.5
5 LED s
S
= 150mΩ - L = 33µH – I
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Page 11 of 35
11
Input Voltage (V)
11
11
Input Voltage (V)
Input Voltage (V)
13 LEDs
9 LEDs
12.5
11 LE Ds
12.5
12.5
LED
5 LEDs
= 350mA – GI
Diodes Incorporated
A Product Line of
14
14
14
13 LEDs
RATIO
9 LEDs
5 LEDs
T = 25 C
L = 33µH
R = 150m
A
S
= 0.23 – with bootstrap
11 LED s
15.5
15.5
15.5
T = 2 5 C
L = 3 3µH
R = 1 50m
R
R
°
A
S
GI1
GI2
15 LEDs
7 LED s
Ω
15 LEDs
15 LEDs
13 LEDs
= 36
= 120
7 LEDs
7 LEDs
°
m
m
Ω
Ω
Ω
© Diodes Incorporated
17
ZXLD1374
17
17
October 2010