PT4115B89E-B 查看數據表（PDF） - Unspecified
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PT4115B89E-B Datasheet PDF : 18 Pages
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PT4115
30V, 1.2A Step-down High Brightness
LED Driver with 5000:1 Dimming
Output Current L=27uH Rcs=0.0825ohm
1.24
1.22
1.20
1.18
1.16
4LEDs
1.14
1.12 1LED
2LEDs
3LEDs
6LEDs
5LEDs
1.10
5
10
15
20
25
Supply Voltage(V)
7LEDs
30
100%
90%
80%
Duty Cycle L=27uH R=0.0825ohm
3LEDs
2LEDs
7LEDs
4LEDs 5LEDs 6LEDs
70% 1LED
60%
50%
40%
30%
20%
10%
0%
5
10
15
20
25
30
Supply Voltage Vin(V)
Output Current L=47uH Rcs=0.13ohm
800
790
780
770
760
750
740
730 1LED
720
2LEDs
3LEDs
4LEDs 5LEDs 6LEDs
710
5
10
15
20
25
Supply Voltage Vin(V)
7LEDs
30
Output Current L=27uH Rcs=0.0825ohm
3%
2%
1%
0%
-1%
4LEDs
-2%
-3%
-4%
-5%
-6% 1LED
-7% 2LEDs
-8%
5
10
3LEDs
15
6LEDs 7LEDs
5LEDs
20
25
30
Supply Voltge(V)
Switching Frequency L=27uH R=0.0825ohm
1000
900
800
700
600
500
400
300
200 1LED 2LEDs 3LEDs
100
4LEDs 5LEDs 6LEDs
7LEDs
0
5
10
15
20
25
30
Supply Voltage Vin(V)
Output Current L=47uH Rcs=0.13ohm
6%
4%
2%
0%
-2%
1LED
-4%
2LEDs
3LEDs
7LEDs
4LEDs
6LEDs
5LEDs
-6%
5
10
15
20
25
30
Supply Voltage(V)
China Resources Powtech (Shanghai) Limited
PT4115_DS Rev EN_2.9
WWW.CRPOWTECH.COM
Page 8
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