Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

U2044B Datasheet(PDF) 4 Page - ATMEL Corporation

Part # U2044B
Description  Dual Output Flasher
Download  9 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

U2044B Datasheet(HTML) 4 Page - ATMEL Corporation

  U2044B_08 Datasheet HTML 1Page - ATMEL Corporation U2044B_08 Datasheet HTML 2Page - ATMEL Corporation U2044B_08 Datasheet HTML 3Page - ATMEL Corporation U2044B_08 Datasheet HTML 4Page - ATMEL Corporation U2044B_08 Datasheet HTML 5Page - ATMEL Corporation U2044B_08 Datasheet HTML 6Page - ATMEL Corporation U2044B_08 Datasheet HTML 7Page - ATMEL Corporation U2044B_08 Datasheet HTML 8Page - ATMEL Corporation U2044B_08 Datasheet HTML 9Page - ATMEL Corporation  
Zoom Inzoom in Zoom Outzoom out
 4 / 9 page
background image
4
4721C–AUTO–02/08
U2044B
3.
Functional Description
3.1
Oscillator (Pin 1 and 14)
Flashing frequency, f
1, is determined by the R1C1 components as follows (see Figure 1-1 on
page 2):
where
C
1 ≤ 47 µF
R
1 = 6.8 kΩ to 180 kΩ
In the case of a lamp outage, the oscillator frequency is switched to the lamp outage frequency
f
2 with f2
2.2
× f
1.
Duty cycle in normal flashing mode:
50%
Duty cycle in lamp outage mode:
40% (bright phase)
3.2
Start Input Right and Left (Pin 2 and 3)
Flashing is disabled as long as the input comparator is tied to GND (pull-down resistor R
7 or R5).
The high-side flasher switch left or right changes the comparator status and enables the output
stage at pin 11 or pin 13. R
6 and R4 are protection resistors for the input stage.
With an open flasher switch the current consumption is only I < 10 µA. The IC is kept in stand-by
mode until there is a voltage drop of V
≈ 6.9V at the pull-down resistor.
Direction mode can only be activated when the ignition switch is in the ON-position as shown in
Figure 1-1 on page 2.
3.3
Start Input Hazard Warning (Pin 4)
In contrast to the direction switches, the hazard input is a low-side type. The pull-up resistor R
10
provides the off-state. R
3 is a protection resistor for the input stage. Hazard warning can be acti-
vated independent of the ignition switch position.
3.4
Supply Voltage Sense (Pin 5)
This pin supplies the lamp outage comparator at pin 8 and is externally connected to the battery
(Kl 30).
3.5
Control Input Relay 1 and 2 (Pin 6 and 7)
The feedback detects the bright phase and the dark phase and enables the oscillator.
f
1
1
R
1
C
1
×
1.5
×
-------------------------------------Hz


Similar Part No. - U2044B_08

ManufacturerPart #DatasheetDescription
logo
ATMEL Corporation
U2044B ATMEL-U2044B_05 Datasheet
227Kb / 9P
   Dual Output Flasher
More results

Similar Description - U2044B_08

ManufacturerPart #DatasheetDescription
logo
ATMEL Corporation
U2044B ATMEL-U2044B_05 Datasheet
227Kb / 9P
   Dual Output Flasher
U2044B ATMEL-U2044B Datasheet
215Kb / 8P
   DUAL OUTPUT FLASHER
logo
TEMIC Semiconductors
U2044B TEMIC-U2044B Datasheet
177Kb / 6P
   Dual Output Flasher
logo
Unisonic Technologies
L2044 UTC-L2044_10 Datasheet
157Kb / 3P
   DUAL OUTPUT FLASHER
LL204 UTC-LL204_17 Datasheet
218Kb / 5P
   DUAL OUTPUT FLASHER
L2044 UTC-L2044 Datasheet
101Kb / 3P
   DUAL OUTPUT FLASHER
L2044 UTC-L2044_15 Datasheet
195Kb / 5P
   DUAL OUTPUT FLASHER
LL204 UTC-LL204 Datasheet
104Kb / 4P
   DUAL OUTPUT FLASHER
LL204 UTC-LL204_15 Datasheet
231Kb / 5P
   DUAL OUTPUT FLASHER
logo
BOWIN ELECTRONIC CO.
M34-2L BOWIN-M34-2L Datasheet
21Kb / 2P
   SINGLE OUTPUT LED FLASHER IC
More results


Html Pages

1 2 3 4 5 6 7 8 9


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.NET
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com