Datasheet

IN
EN
SW
D
FB
MODE
AGND
COMP
SS
1
4
6
8
3
7
2
5
PGND
9
10
SW
TPS61086
Cby
1µF/16V
L
3.3µH
Css
100nF
Rsense
15 Ω
3S3P wLED
LWE67C
Rlimit
R1
180kΩ
AnalogBrightnessControl
PWMSignal
3.3V~wLEDoff
0V~l =30mA (eachstring)
Canbeusedswingingfrom0Vto3.3V
LED
110 Ω
optional
V
3.3V±20%
IN
Cin
10µF/
16V
Rcomp
68kΩ
Ccomp
1.2nF
Cout
2*10µF/
25V
V
300mA
S
PMEG2010AEH
Dz
BZX84C
18V
R2
127kΩ
TPS61086
www.ti.com ................................................................................................................................................................................................ SLVSA05 – AUGUST 2009
Figure 25. Simple Application (3.3 V input voltage - FORCED PWM MODE) for wLED Supply (3S3P) with
Adjustable Brightness Control using an Analog Signal on the Feedback Pin (with optional clamping
Zener diode)
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Product Folder Link(s): TPS61086