Description

LD1204 is a driver ASIC that used in automotive and motorcycle direction indicator lamp unit. The IC has

a frequency conversion function, when the load current is less than the internal set threshold, the flasher

frequency doubling. At the same time it has multiple protection functions, such as over-current protection,

over-temperature protection, high-voltage clamp, under-voltage protection and battery reverse protection,

to ensure that in different circumstances the normal functions of the chip. Chip peripheral circuit is simple,

just a external capacitor (220uF,10V ) that connected with the CEXT pin and OUT pin, while Vcc pin is

connected to the positive terminal of the battery, the OUT pin connected to a switch ( which set between the

OUT pin of chip and the direction indicator lamp ). When the switch turn on, chip generates a duty ratio of

about 50% for the direction indicator control signal.

Features

● Built-in fixed frequency oscillator

External capacitor does not affect the flash frequency

● Double frequency flashing in low load conditions

● Cycle by cycle over temperature shutdown

● Battery reverse protection

●Cycle by cycle over current protection


 

Main products as follows:

1. Auto/moto flasher relay IC LT4761 LD1041 U2043B L2044L LD1204

2. Auto windshield wiper blade control IC U641B U642B LD33197

3. Auto high energy/hall electronic ignitor IC LD3334 LD3335 LD497 LD79076

4.Moto magnetic signal ignition control IC

5.Auto rear windows heating timer LD6046

6.Auto metal proximity detector IC LD209A

7.Hall sensors

8.PWM lights control IC (available for backlight of auto instrument ) LD6083B

9.Power darlington transistor BU931ZT BU941ZT 2SD1071 TIP142 TIP147

10.Current regulative diode

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