LG 22LS3700 Service Manual page 30

LED driver circuit for TN module
+24V_LED_driver
LED_DRIVER LED_DRIVER
C10001 C10002
2.2uF 2.2uF
50V 50V
LED_DRIVER
R10001
WLED_ENABLE 100
1/10W
LED_DRIVER
R10004 C10003
100K 100pF
1/10W 50V
LED_DRIVER
OPT
R10005
100
1/10W
ERROR_OUT
OPT
R10002
10K
1/10W
LED_DRIVER
R10003
100
1/10W
PWM_DIM
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
65mA_Typ
CMI_18.51_HD
70mA_Max
65mA_Typ
CMI_21.6_FHD
70mA_Max
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.
Copyright © 2012 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LED_DRIVER
L10001
33uH
LED_DRIVER LED_DRIVER
C10005 C10021
OPT
0.1uF 0.1uF
C10010
50V 50V
1000pF
50V
close to IC10000
must be modifed
LED_DRIVER
R10007
4.7
1/10W
C10008
0.1uF
50V
LED_DRIVER
close to IC10000
C10009
2010.06.30. hwson 1uF
10V
C104 : 10uF --> 2.2nF for thermal Issue
LED_DRIVER
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 THERMAL
EN
2
COMP
3
LED_DRIVER LED_DRIVER
RT
R10006 4
390 R10008
FLT
5
1/10W 16K
LED_DRIVER
1%
C10006
2200pF
C10007
50V
0.33uF OPT
50V
R10009
LED_DRIVER
51K
AUO_CPT
1%
R10011 R10013
47K 51K
1/10W 1/10W
1% 5%
AUO_CPT
R10010
LED_DRIVER
10K
R10014
1/8W
7.5K
LED_DRIVER
1/8W
LED_DRIVER
PWM_PULL_DOWN
R10024 C10004
3.9K 100pF
50V
OVP = 1.23*(1+R1/R2)
R10011 R10013 Remark
AUO_18.5
47Kohm 51Kohm 61.35mA AUO_21.5
CPT_21.5
27Kohm 27Kohm 111.11mA LGD_21.5
39Kohm 56Kohm 65.24mA CMI_18.51
39Kohm 56Kohm 65.24mA CMI_21.6
LED_DRIVER
D10001
PDS5100H-13
OPT
R10012 LED_DRIVER
5.1 R10018
560K
1/10W
LED_DRIVER LED_DRIVER
D
Q10001
R10015
12
AP18T10GH
G
S
LED_DRIVER OPT 18.5"
R10016
3K R10017 C10011 R10019
1/8W 0.1 1000pF
LED_DRIVER 1% 50V 1/10W
must be modifed
R120 : 6.8K --> 3K
R121 : 0.03 --> 0.1
2010.06.30 HWSON
OUT4
15
OUT3
14
21
IC10000 LEDGND
13
MAX16814
OUT2
12
LED_DRIVER
OUT1
11
R10011-*1 R10011-*2 R10011-*3
27K 39K 39K
1/10W 1/10W 1/10W
1% 1% 1%
LGD CMI_18.5" CMI_21.6"
R10013-*1 R10013-*2 R10013-*3
27K 56K 56K
1/10W 1/10W 1/10W
1% 1% 1%
LGD CMI_18.5" CMI_21.6"
Module Vs spec R10018 R10019
34.0V_Typ
560Kohm 16Kohm
36.0V_Max
52.8V_Typ
560Kohm 11Kohm
57.6V_Max
52.0V_Typ
560Kohm 11Kohm
57.6V_Max
51.2V_Typ
560Kohm 11Kohm
56.0V_Max
24.8V_Typ
560Kohm 22Kohm
27.2V_Max
37.8V_Typ
560Kohm 16Kohm
40.8V_Max
LED_DRIVER LED_DRIVER LED_DRIVER
C10012 C10014 C10018
2.2uF 10uF 2.2uF
100V 100V 100V
21.5" CMI_21.6" CMI_18.5"
R10019-*1 R10019-*2 R10019-*3
16K 11K 16K 22K
1/10W 1/10W 1/10W
C10013 C10015 C10017 C10019
1000pF 1000pF 1000pF 1000pF
50V 50V 50V 50V
LED_DRIVER LED_DRIVER LED_DRIVER LED_DRIVER
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 -
32.54V CMI_18.51 -
44.28V CMI_21.6 33.6
GP4L_S7LR2
SMALL_TN_LED_DRIVER
OPT
C10020
2.2uF
100V
wafer modify & resister add
7
LED_DRIVER_NON_LGD 6
R10020
0
5
1/10W
5%
4
3
LED_DRIVER_NON_LGD
R10021
0
2
1/10W
5%
1
LED_DRIVER_LGD LED_DRIVER_LGD
R10022 R10023
0 0
10031HR-H06
1/10W 1/10W
5% 5%
P10000
LED_DRIVER_LGD
LED_DRIVER_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
24.8 27.2
37.8 40.8
2011/08/19
29
LGE Internal Use Only