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| UNISONIC TECHNOLOGIES CO., LTD L2044 DUAL OUTPUT FLASHER DESCRIPTION The UTC L2044 is a dual output stages flasher designed as a relay driver for flashing light control in automotive applications. Both sides direction indicator input with only a small control current makes switch contacts for small loads 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 typical 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 SOP-14 LINEAR INTEGRATED CIRCUIT DIP 14 - 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<10A ( at Switches Open) * Reverse Polarity Protection * Three Control Inputs: Left, Right and Hazard Warning *Pb-free plating product number: L2044L PIN DESCRIPTION PIN No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 PIN FUNCTION NAME OSC Oscillator SIL Start input left SIR Start input right Start input hazard SIHW warning VS VCC CR1 Control input relay 1 CR2 Control input relay 2 LD Lamp failure detection VS VCC GND ground OR1 Output relay 1 VS VCC OR2 Output relay 2 OSC Oscillator ORDERING INFORMATION Order Number Normal Lead free L2044-D14-T L2044L-D14-T L2044-S14-R L2044L-S14-R L2044-S14-T L2044L-S14-T Package DIP-14 SOP-14 SOP-14 Packing Tube Tape Reel Tube www.unisonic.com.tw Copyright (c) 2005 Unisonic Technologies Co., LTD 1 QW-R123-015,A L2044 PIN CONFIGURATION LINEAR INTEGRATED CIRCUIT OSC SIL SIR SIHW VS CR1 CR2 1 2 3 4 5 6 7 UTC L2044 14 13 12 11 10 9 8 OSC OR2 VS OR1 GND VS LD BLOCK DIAGRAM 9 5 + Vcc-81mV 8 RShunt 30m Contast 1 6 7 Vcc/2 R9 47K R8 47K 2 Vcc Vcc C1 4.7 F K1 + - R1 82K 14 VRef1 1 + + Vcc-6V 27.5V 11 13 GND 10 R2 200 Hazard warning + VRef2 + 12 3 2 4 R3 4.7K R6 4.7K R10 1.2K Vcc Relay 12 R4 4.7K right left Vstart R5 1.2K R7 1.2K GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 QW-R123-015,A L2044 ABSOLUATE MAXIUM RATINGS PARAMETER Supply Voltage, 1 min, pins 5, 9 and 12 Junction Temperature Operating Temperature Storage Temperature LINEAR INTEGRATED CIRCUIT -40 ~ +150 DIP-14 90 /W JA Thermal Resistance Junction to Ambient SOP-14 120 Note 1.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. 2.The device is guaranteed to meet performance specification within 0 ~70 operating temperature range and assured by design from -20 ~85 . SYMBOL VCC TJ TOPR TSTG RATINGS 24 +125 0 ~70 UNIT V ELECTRICAL CHARACTERISTICS (VCC = 12V, Ta =25 , unless otherwise specified.) PARAMETER Supply Voltage Range Saturation Voltage VCC=8V VCC=12V SYMBOL TEST CONDITIONS VCC Pins 5, 9, 12 VOUT V12 V12 VCC IOUT IOUT ICC RL tON RL=82 Ta= -20 ~ 85 Ta= -20 ~ 85 VCC=9V VCC=13.5V VCC=16V Pins 11, 13 Pins 11, 13 Pins 5, 9, 12 First bright phase VCC=9V~16V, Pin 8, Ta= -20 ~ 85 VCC=13.5V, Pin 8 25.0 18 27.5 20 70.6 85.5 93.0 MIN 8 TYP MAX UNIT 18 V 1.0 V 1.2 30.0 V 22 V mV 300 0.1 10 10 -6 10 +6 mA mA A ms % V/K Clamping Voltage Relay output overvoltage detection (relay disabled) Control signal threshold Output current for relay driver Relay output reverse current Supply current, switches open Relay coil resistance Start delay Tolerance of control signal threshold Temperature coefficient of control signal Threshold TCVO TOLERANCES (VCC = 12V, Ta =25 , unless otherwise specified.) PARAMETER Frequency determining resistor Frequency determining capacitor Frequency tolerance Bright period Frequency increase Lamp load SYMBOL R1 C1 f1 f1 f2 f2 PL TEST CONDITIONS MIN 6.8 -5 47 37 2.15xf1 1 TYP MAX UNIT 510 k 47 F +5 53 45 2.3xf1 % % Hz W Normal flashing, basic frequency f1 excluding the tolerance of R1 and C1 Basic frequency f1 Control frequency f2 Lamp failure UTC assum es no responsibility for equipm ent failures that result from using products at values that exceed, even m om entarily, rated values (such as m axim um ratings, operating condition ranges, or other param eters) 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 system s where m alfunction 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 inform ation presented in this docum ent does not form part of any quotation or contract, is believed to be accurate and reliable and m ay be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 QW-R123-015,A |
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