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THERMAL
THERMAL
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
LED DRIVER 29 13
R2911
30K
1/16W
C2907
0.22uF
16V
MULTI_ON
C1122 1uF
25V
Q2901
MMBT3904(NXP)
E
B
C
WLED_ENABLE
L1102
33uH
R2906
10K
1/16W
WLED_DIM_ADJ
R1147
10K
R1134
30K
1%
C2912
1uF
100V
+3.3V_ST
R2912
51K
1/16W
1%
R1146
1M
1/8W
1%
C1111
100pF
50V
R2902
10K
C2902
10uF
25V
C2903
0.1uF
50V
OPT
Q1103
SMK630D
S
D
G
C2905
100pF
50V
L2901
33uH
R1131
39K
1%
R1132
220K
1%
JP1102
R1128
6.2K
1%
C1128
0.1uF
250V
C2913
1uF
100V
Q2902
AOD478
S
D
G
P1101
SMAW200-03
1
2
3
R2913
3.3
1/16W
BLU_CURRENT_CTL
D1103
UF3D(SUZHOU GRANDE)
R1100
270K
1/8W
1%
C1126
33uF
100V
R1123
75K
1%
C1125
0.1uF
25V
R2904
18K
1/16W
1%
R1133
1.5K
1%
R1127
100
ZD1102
33V
R2916
0.1
1W
R1126
120K
1/8W
1%
+19V
IC2901
TPS40210DGQR
3
DIS/EN
2
SS
4
COMP
1
RC
5
FB
6
GND
7
ISNS
8
GDRV
9
BP
10
VDD
11
[EP]
C2911
33uF
100V
C1123
4700pF
50V
R1121
100
C1124
33uF
100V
R1124
47K
1%
R1145
1M
1/8W
1%
C2901
47uF
25V
C1116
100pF
50V
C2914
1uF
100V
R2909
220K
1/16W
R2903
10K
1/16W
C2909
0.1uF
50V
R1129
100K
1%
L1101
33uH
R2901
4.7K
C1114
1000pF
50V
+19V
R2905
1K
1/16W
1%
R1122
100K
R1135
1.5K1%
C1127
0.1uF
250V
D2901
100V
BR210
R2907
680
1/8W
1%
R2915
0.1
1W
R1137
0.1
1W
1%
R1148
1M
1/8W
1%
R1149
1M
1/8W
1%
C1129
33uF
100V
C1130
33uF
100V
IC1100
DT1641AS
3
NC_1
2
OVP
4
PGND_1
1
EN
6
PDIM
5
PGND_2
7
RISET
8
LS8
9
LS7
10
LS6
11
LS5
12
NC_2
13
LGND
14
LS4
15
LS3
16
LS2
17
LS1
18
RT
19
COMP
20
RSS
21
NDRV
22
CS
23
VREF
24
VIN
25
[EP]GND
C2906
470pF
50V
JP1101
C2915
1uF
100V
C2916
1uF
100V
C2917
1uF
100V
C2904
0.033uF
50V
C2908
1uF
25V
R2914
3.9K
1/16W
1%
C2910
330pF
50V
TOTAL LED DRIVER BLOCK
FIRST BOOST UP
VOUT#2
REDUCE INDUCTOR TEMP ISSUE
VOUT = VREF*(1+51K/680)
= 0.7 *(1+51K/680)
= 53.2V
VOUT#1=53.2V
REDUCE RIPPLE CURRENT
REDUCE RIPPLE CURRENT REDUCE RIPPLE CURRENT
121118
Change 2012 -> 1608
for cost down
121118
Change 10V -> 25V
for derating
121211
1K->3.9K
121211
220pF->330pF
EAX65283603
29LN4500 2013.1.14
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