Description
The bipolar integrated circuit LT4761 is used in relay-controlled automotive flashers
where a high-level EMC is required.
Lamp outage is indicated by frequency doubling during hazard warning as well as
direction mode.
Features
●Quiescent current <5mA
●Wide operating voltage, up to 33V
● Strong anti-interference ability
Functional Description
The circuit is directly coupled by an external RC circuit that input triangular wave oscillation signal,
through a controlled oscillator, current amplification, the output drive capability with a strong square wave
pulse.
When the sampling resistor Rs monitoring to reduce the half of lamp load, the corresponding voltage
comparator action, causing changes in the oscillation frequency doubles.
When the supply voltage produces a transient pulse (±100V), the protection circuit automatically turns on
shunting and clamping limit, to interference protection purposes.
The relay drive current output of the circuit is 120-200mA.
 

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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Catalog and datasheet will be provided if needed.