LG 22LV2500 Service Manual page 31

LED driver circuit for TN module
+24V_LED_driver
OPT C10001
C10022
2.2uF
10uF
100V
50V
R10001
WLED_ENABLE 100
1/10W
R10004
100K
1/10W
R10005
100
ERROR_OUT
R10002 1/10W
OPT
10K
1/10W
OPT
R10003
100
PWM_DIM
1/10W
ILED = 1500/RSETI
Module ILED spec
AUO_18.5_HD
60mA_Typ
AUO_21.5_FHD
63mA_Max
CPT_21.5_FHD
110mA_Typ
LGD_21.5_FHD
120mA_Max
CMI_18.5_HD
50mA_Typ
56mA_Max
CMI_21.5_FHD
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.
ALL_TN_LED_DRIVER
L10001
33uH
C10002
C10005 C10021
2.2uF
0.1uF 0.1uF
50V C10010
50V 50V
1000pF
50V
close to IC10000 OPT
must be modifed
R10007
4.7
1/10W
C10008
0.1uF
50V
close to IC10000
C10009
2010.06.30. hwson 1uF
10V
for thermal Issue
C104 : 10uF --> 2.2nF
C106 : 0.68uF --> 0.33uF
R113/R114
R111 : 470 --> 390
IN
Operating Freq. 1
2010.02.07 for PQ/19V_LED
F=7.35x10^9/RT
EN
2
COMP
3
C10003 R10008
RT
R10006 4
100pF
390 16K 1%
FLT
50V 5
1/10W
R10009
C10006
2200pF
C10007
50V
0.33uF 51K 1%
50V
OPT
R10011 R10013
47K 51K
1/10W 1/10W
1% 5%
AUO_CPT
AUO_CPT
R10010
10K
1/8W
R10014
7.5K
1/8W
R10024 C10004
3.9K 100pF
PWM_PULL_DOWN 50V
OVP = 1.23*(1+R1/R2)
R10011 R10013 Remark
47Kohm 51Kohm 61.35mA
27Kohm 27Kohm 111.11mA
59Kohm 59Kohm 50.85mA
D10001
PDS5100H-13
5.1
R10012
OPT
R10018
R10015 560K
12 1/10W
D
1/10W Q10001
5%
G AP18T10GH
S
R10016
1/8W
OPT 18.5"
3K
R10017 C10011 R10019
0.1 1000pF
50V 1/10W
1%
must be modifed
R120 : 6.8K --> 3K
R121 : 0.03 --> 0.1
2010.06.30 HWSON
OUT4
15
THERMAL
OUT3
14
21
IC10000 LEDGND
13
MAX16814
OUT2
12
OUT1
11
R10011-*1 R10011-*2
27K 59K
1/10W 1/16W
1% 1%
LGD CMI
R10013-*1 R10013-*2
27K 59K
1/10W 1/16W
1% 1%
LGD CMI
Module Vs spec R10018 R10019
34.0V_Typ
AUO_18.5 560Kohm 16Kohm
36.0V_Max
52.8V_Typ
AUO_21.5 560Kohm 11Kohm
57.6V_Max
52.0V_Typ
CPT_21.5 560Kohm 11Kohm
57.6V_Max
51.2V_Typ
LGD_21.5 560Kohm 11Kohm
56.0V_Max
33.0V_Typ
CMI_18.5 560Kohm 18Kohm
34.0V_Max
44.8V_Typ
CMI_21.5 560Kohm 13Kohm
47.6V_Max
C10012 C10014 C10016 C10018 C10020
2.2uF 10uF 10uF 2.2uF
100V 100V 100V 100V
OPT
21.5" CMI_21.5" CMI_18.5"
R10019-*1 R10019-*2 R10019-*3
16K 11K 13K 18K
1/10W 1/10W 1/10W
C10013 C10015 C10017 C10019
1000pF 1000pF 1000pF 1000pF
50V 50V 50V 50V
ESD protection solution
Forward voltage spec.
Remark Module min
44.28V AUO_18.5 30.0
63.85V AUO_21.5 48.0
63.85V CPT_21.5 46.4
63.85V LGD_21.5 -
39.50V CMI_18.5 28.0
54.21V CMI_21.5 39.2
S7LR SMALL TN
LED driver
2.2uF
100V
OPT
wafer modify & resister add
7
6
NON_LGD
R10020
0
5
1/10W
5%
4
NON_LGD 3
R10021
0
2
1/10W
5%
1
R10022 R10023
0 0
10031HR-H06
1/10W 1/10W
5% 5%
P10000
LGD LGD
LGD
NON_LGD
P10001
12507WR-06L
1
2
3
4
5
6
7
Typ Max
34.0 36.0
52.8 57.6
52.0 57.6
51.2 56.0
33.0 34.0
44.8 47.6
2011.05.09
29