LM3444MM Datasheet, PDF (21/30 Pages) Texas Instruments – AC-DC Offline LED Driver

LM3444
www.ti.com
SNVS682C – NOVEMBER 2010 – REVISED MAY 2013
LM3444 Design Example 1
Input = 90V_AC to 135V_AC, V_LED = 7 x HB LED String Application at 400 mA
TP3 ^V+
D3
BR1
C2
L4
+
C7
D9
D8
R8
+
D4
C9
C15
R6
C10
R7
V_BUCK
TP4
LED+
V_LED
R4
C12
L3
C1
D12
L1
RT1
V+
R2
Q1
D1
D10
D2 _R10
L5
TP14
C5
V_LED-
TP5
LED-
Q3
L2
I_COLL
F1
J1
VAC
LM3444
U1
1 NC
NC 10
2 NC
VCC 9
3 NC
GATE 8
4 COFF
ISNS 7
5 FLTR2
C4
GND 6
TP15
Q2
TP16
R3
TP7-9
C11
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