L2044L-D14-T

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UNISONIC TECHNOLOGIES CO., LTD L2044 LINEAR INTEGRATED CIRCUIT www.unisonic.com.tw 1 of 5 Copyright © 2015 Unisonic Technologies Co., Ltd QW-R121-001.C DUAL OUTPUT FLASHER  DESCRIPTION The UTC L2044 is a dual output stages flasher designed as a relay driver for flashing light c ontrol in automotive applications. Both sides direction indicator input with only a small control current makes switch contacts for small lo ads possible. Each side of the vehicle is controlled separately. The construction of the hazard switch could be simplified due to hazard warning input is separate. The flasher will dramatically increase the flash frequency by a typica l ratio of 2:1 if lamp fault is detected. The UTC L2044 can be directly connected to the battery due to extreme low current consumption.  FEATURES * Temperature and Supply Voltage Compensated Flashing Frequency * Frequency Doubling Indicates Lamp Fault. * Two Relay Driver Outputs with High Current-carrying Capacity and Low Saturation Voltage * Minimum Lamp Load for Flasher Operation: ≥ 1W * Very Low Sensitivity to EMI * Extremely Low Current Consumption<10μA ( at Switches Open) * Reverse Polarity Protection * Three Control Inputs: Left, Right and Hazard Warning  ORDERING INFORMATION Ordering Number Package Packing Lead Free Halogen Free L2044L-D14-T L2044G-D14-T DIP-14 Tube - L2044G-S14-R SOP-14 Tape Reel  MARKING DIP-14 SOP-14

L2044 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 2 of 5 www.unisonic.com.tw Q W - R 1 2 1 - 0 0 1 . C  PIN CONFIGURATION  PIN DESCRIPTION PIN No. PIN NAME FUNCTION

1 OSC Oscillator

2 SIL Start input left

3 SIR Start input right

4 SIHW Start input hazard warning

5 V CC V CC

6 CR1 Control input relay 1

7 CR2 Control input relay 2

8 LD Lamp failure detection

9 V CC V CC

10 GND ground

11 OR1 Output relay 1

12 VS V CC

13 OR2 Output relay 2

14 OSC Oscillator

L2044 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 3 of 5 www.unisonic.com.tw Q W - R 1 2 1 - 0 0 1 . C  BLOCK DIAGRAM

L2044 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 4 of 5 www.unisonic.com.tw Q W - R 1 2 1 - 0 0 1 . C  ABSOLUATE MAXIUM RATINGS PARAMETER SYMBOL RATINGS UNIT Supply Voltage, 1 min, pins 5, 9 and 12 V CC 24 V Junction Temperature T J +125 °C Operating Temperature T OPR -20~ +85 °C Storage Temperature T STG -40 ~ +150 °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied.  THERMAL DATA PARAMETER SYMBOL RATINGS UNIT Junction to Ambient DIP-14 θJA 90 °C/W SOP-14 120  ELECTRICAL CHARACTERISTICS (VCC = 12V, TA =25°C, unless otherwise specified.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Supply Voltage Range V CC Pins 5, 9, 12 8 18 V Saturation Voltage V OUT VCC=8V, RL=82Ω 1.0 V VCC=12V, RL=82Ω 1.2 Clamping Voltage V 12 T a= -20°C ~ 85°C 25.0 27.5 30.0 V Relay output overvoltage detection (relay disabled) V 12 T a= -20°C ~ 85°C 18 20 22 V Control signal threshold V CC VCC=9V 70.6 mV VCC=13.5V 85.5 VCC=16V 93.0 Output current for relay driver I OUT Pins 11, 13 300 mA Relay output reverse current I OUT Pins 11, 13 0.1 mA Supply current, switches open I CC Pins 5, 9, 12 10 μA Relay coil resistance R L Ω Start delay t ON First bright phase 10 ms Tolerance of control signal threshold VCC=9V~16V, Pin 8, Temperature coefficient of control signal Threshold T CVO V CC=13.5V, Pin 8 10 μV/K  TOLERANCES (VCC = 12V, TA =25°C, unless otherwise specified.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Frequency determining resistor R 1 6.8 510 k Ω Frequency determining capacitor C 1 47 μF Frequency tolerance △f1 Normal flashing, basic frequency f1 excluding the tolerance of R1 and C1 -5 +5 % Bright period △f1 Basic frequency f1 47 53 % △f2 Control frequency f2 37 45 Frequency increase f 2 Lamp failure 2.15×f1 2.3×f 1 Hz Lamp load P L 1 W

L2044 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 5 of 5 www.unisonic.com.tw Q W - R 1 2 1 - 0 0 1 . C  TYPICAL APPLICATION CIRCUIT UTC assumes no responsibility for equipment failures t hat result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.