# LL204 Dual Output Flasher

## Description
️· Dual output flasher IC designed as a relay driver for flashing lights.
️· Suitable for automotive applications like direction indicators.
️· Separately controls each side of the vehicle.
️· Simplifies hazard switch construction.
️· Increases flash frequency by 2:1 if lamp fault is detected.
️· Low current consumption allows direct battery connection.

## Features
️· Temperature and supply voltage compensated flashing frequency.
️· Frequency doubling indicates lamp faults.
️· Two relay driver outputs (high current, low saturation voltage).
️· Minimum lamp load: ≥ 1W.
️· Low EMI sensitivity.
️· Extremely low current consumption (<10μA).
️· Reverse polarity protection.
️· Three control inputs: Left, Right, Hazard Warning.

## Ordering Information
️· LL204L-D14-R: DIP-14 package, Tube packing (Lead Free).
️· LL204G-D14-R: DIP-14 package, Tube packing (Halogen Free).
️· LL204G-S14-R: SOP-14 package, Tape Reel packing (Halogen Free).

## Pin Configuration
️· PIN 1: OSC - Oscillator
️· PIN 2: SIL - Start Input Left
️· PIN 3: SIR - Start Input Right
️· PIN 4: SIHW - Start Input Hazard Warning
️· PIN 5/9/12: VS - VCC
️· PIN 6: CR1 - Control Input Relay 1
️· PIN 7: CR2 - Control Input Relay 2
️· PIN 8: LD - Lamp Failure Detection
️· PIN 10: GND - Ground
️· PIN 11: OR1 - Output Relay 1
️· PIN 13: OR2 - Output Relay 2
️· PIN 14: OSC - Oscillator

## Absolute Maximum Ratings
️· Supply Voltage (VCC): 24V
️· Junction Temperature (TJ): +150°C
️· Operating Temperature (TOPR): -20°C to +85°C
️· Storage Temperature (TSTG): -40°C to +150°C

## Electrical Characteristics (VCC = 12V, TA = 25°C)
️· Supply Voltage Range: 8V to 18V
️· Output Current (IOUT): 300mA
️· Supply Current (ICC): < 10μA (switches open)
️· Frequency Determining Resistor (R1): 6.8kΩ to 510kΩ
️· Frequency Determining Capacitor (C1): 47μF
️· Frequency Tolerance: -5% to +5%
️· Lamp Failure Frequency Increase: 2.15x to 2.3x f1
️· Minimum Lamp Load: 1W