TS1518CX5 Taiwan Semiconductor, TS1518CX5 Datasheet - Page 5
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TS1518CX5
Manufacturer Part Number
TS1518CX5
Description
LED Lighting Drivers White LED driver
Manufacturer
Taiwan Semiconductor
Datasheet
1.TS1518CX5.pdf
(7 pages)
Specifications of TS1518CX5
Rohs
yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
TS1518CX5-RF
Manufacturer:
SEMICON
Quantity:
20 000
Application Information (Continue)
LED Current and Dimming Control
The LED’s current is set by a resistor connected at FB pin to GND using:
The maximum LED current set initially can be reduced by pulse width modulating the CTRL voltage from 0.4V to 1.8V.
A better approach is to adjust the feedback voltage for dimming control. Either a DC level signal or a filtered PWM
signal can be used to control the LED current as illustrated in below figures respectively. Using the above different
scheme, the LED current can be controlled from 0% to 100% to its maximum value.
I
LED
Dimming Control using a Filtered PWM Signal
=
Dimming Control using a DC Voltage
100
R
LED
mV
Step-Up DC-DC Converter, White LED Driver
5/7
PWM : 2V ; 1KHz ; Vin=3.6V
VDC(V)
1.8
1.6
1.4
1.2
0.8
0.6
0.4
0.2
2
1
0
100%
Duty
20%
30%
40%
50%
60%
70%
80%
0%
VFB
19.6
31.1
43.4
86.4
96.9
102
2.2
9.2
63
74
0
Iout ( mA)
Iout(mA)
17.4
12.4
4.07
6.4
0.43
12.3
14.5
16.9
20
15
10
1.8
3.6
8.5
8
0
19
20
0
6
TS1518
Version: B07