Method To Reduce The Current Of Led Light Bar
The method of reducing the current of LED light bars depends on the LED constant current control circuit mode. Currently, there are three main types of LED constant current control circuits:
One is to externally install the constant current control tube, in which case the total resistance of the lamp bar current detection resistor connected between the s-pole of the constant current control tube and the ground can be increased. Such resistors are often made up of several small-resistance resistors in parallel, and removing one or two of them can generally reduce the lamp bar current;
Second, the constant current control tube is integrated inside the chip, and the S-pole pin of the control tube is usually referred to as ISEN. In this case, increasing the small resistance of the external resistor connected to this pin can reduce the current of the light bar;
Third, the constant current control chip is equipped with a lamp current setting pin, most of which is labeled as ISET. An external resistor of tens of kiloohms is connected to the ground, and increasing the resistance of this resistor can reduce the lamp current.
Appendix: The functional pins for reducing the current of LED light bars for various types of ICs are as follows:
Chip model Pin ISET/ISEN
A717 1 foot
AP304 3-pin ISET
AP3064 3-pin ISET
AP3608 20-pin package 14-pin 24-pin package 9-pin ISET
AP3616 22-pin ISET
BA9422 25-30 ISEN
BD9202 17-pin
BD9203 14-pin
BD9206 18-pin ISET
BD9261/64 14-pin ISET
BD9262EFV 23-pin ISET
BD9262FP 16-pin ISET
BD3939EP 14-pin ISET
BD9393FP 14-pin ISET
BD9472FP 14-pin ISET
BD9846F 11-pin ISEN 15-pin CS
BD9422 25-30-pin ISEN
BD9466F 11-pin
EUP2589 9-pin
EUP25710 15-pin
GA98A 6-pin ISET
GB98ADN 2-pin ISET
GB98AERN 6-pin ISET
HV9912 15-pin
IVV7023 20-pin
IW7023 20-pin
L6599A 6-pin ISEN
LM3432 24-pin package 2-pin 28-pin package 6-pin
LT3599 28-pin package 13-pin 32-pin package 12-pin
MAP3204S/T 6-pin
MAP3301 8-pin ISEN
MAX16809 14-pin
MAX16810 14-pin
MAX17061 26-pin
MC34844 19-pin
MC34845 15-pin
MP3301 8-pin
MP3389 9-pin
MP3391` 11 feet
MP3394 6-pin
MP3398A 6-pin ISET 13-pin ISEN
MP4012 15-pin
MAP3201 2-pin
MT7593 4-pin
NCP1396 2-pin ISET
OB3354 5 7 10 12 Foot ISET
OB3362
The larger the resistance to ground of OB3365RP 2-pin ISET, the smaller the current
OZ568 17 19 21 23 25 27 29 31 Feet ISEN
OCP8122A 13 17-pin ISEN
OZ9902A 13 17-pin ISEN
OZ9902C 10-pin ISEN
OZ9902GN 13 17-pin ISEN
OZ9903 7 9 11-pin ISEN 28-pin package
OZ9905GN 16 19 22 25 Foot ISEN
OZ9906 (DRV1-DRV6) 6 7 8 11 12 13 ISEN (15-20)
OZ9908
OZ9916B
OZ9926A
OZ9928
OZ9936
OZ9937
OZ9938CN
OZ9939
OZ9939GN
OZ9966
OZ9967
OZ9972ASN
OZ9981GM
OZ9998
PF7700S
PF7906BS
12, 14, 16, 18, 20 feet
ISEN
9 11 13 15 17 19 feet
ISEN
13-Foot ISEN
27 feet to ground
3, 7 feet grounding
14 feet to the ground
3 or 6-foot grounding
5-foot ISEN
3-foot grounding
15 feet grounding
2 4 6 8 10 28 feet
ISEN
9-foot grounding protection is cancelled
7 feet to ground connected with 2.2KΩ resistor
Unprotect
16-pin package 2-pin ISET, 24
Foot package 11-pin/ISET 6-pin
5-Foot (FB) ISEN Foot
QX5305 4-pin
RT8560 8-pin
RT8566 2 pin
RT8567A 4-pin
SELC2010M 2-pin
SN510P 5-pin
TA9690 11-pin
TPS40210 7-pin ISEN
TPV101D 6-pin ISET
UCC25710 15-pin
