L2044 Datasheet, PDF (1/3 Pages) Unisonic Technologies – DUAL OUTPUT FLASHER

UNISONIC TECHNOLOGIES CO., LTD
L2044
DUAL OUTPUT FLASHER
LINEAR INTEGRATED CIRCUIT

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
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
SOP-14
DIP- 14
*Pb-free plating product number: L2044L
PIN DESCRIPTION
PIN PIN
No. NAME
FUNCTION
1 OSC Oscillator
2 SIL Start input left
3 SIR Start input right
4
SIHW
Start input hazard
warning
5
VS V_CC
6 CR1 Control input relay 1
7 CR2 Control input relay 2
8
LD Lamp failure detection
9
VS V_CC
10 GND ground
11 OR1 Output relay 1
12
VS V_CC
13 OR2 Output relay 2
14 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 © 2005 Unisonic Technologies Co., LTD
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