Motore di ricerca datesheet componenti elettronici
  Italian  ▼
ALLDATASHEETIT.COM

X  

W-6137 Scheda tecnica(PDF) 9 Page - Copal Electronics

Il numero della parte W-6137
Spiegazioni elettronici  CMOS Boost Converter
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Produttore elettronici  COPAL [Copal Electronics]
Homepage  http://www.nidec-copal-electronics.com/e
Logo COPAL - Copal Electronics

W-6137 Scheda tecnica(HTML) 9 Page - Copal Electronics

Back Button W-6137 Datasheet HTML 5Page - Copal Electronics W-6137 Datasheet HTML 6Page - Copal Electronics W-6137 Datasheet HTML 7Page - Copal Electronics W-6137 Datasheet HTML 8Page - Copal Electronics W-6137 Datasheet HTML 9Page - Copal Electronics W-6137 Datasheet HTML 10Page - Copal Electronics W-6137 Datasheet HTML 11Page - Copal Electronics W-6137 Datasheet HTML 12Page - Copal Electronics W-6137 Datasheet HTML 13Page - Copal Electronics Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 16 page
background image
W-6137
9
Device Operation
The W-6137 is a fixed frequency (1 MHz), low noise,
inductive boost converter providing constant current to the
load. A high voltage internal CMOS power switch is used to
energize the external inductor. When the power switch is
then turned off, the stored energy inductor is released into
the load via the external Schottky diode.
The on/off duty cycle of the power switch is internally
adjusted and controlled to maintain a constant regulated
voltage of 0.3 V across the external feedback resistor
connected to the feedback pin (FB). The value of external
resistor will accurately set the LED bias current accordingly
(0.3 V/R1).
During the initial power-up stage, the duty cycle of the
internal power switch is limited to prevent excessive in-rush
currents and thereby provide a “soft-start” mode of
operation.
While in normal operation, the device will comfortably
deliver up to 30 mA of bias current into a string of up to 5
white LEDs.
In the event of a “Open-Led” fault condition, where the
feedback control loop becomes open, the output voltage will
continue to increase. Once this voltage exceeds 24 V, an
internal protection circuit will become active and place the
device into a very low power safe operating mode. In
addition, an internal clamping circuit will limit the peak
output voltage to 29 V. If this fault condition is repaired, the
device will automatically resume normal operation.
Thermal overload protection circuitry has been included
to prevent the device from operating at unsafe junction
temperatures above 150 C. In the event of a thermal
overload condition the device will automatically shutdown
and wait till the junction temperatures cools to 130 C before
normal operation is resumed.
Enable
Current
Sense
300 mV
R1
15
C1
Thermal
Shutdown
& UVLO
1MHz
Oscillator
Over Voltage
Protection
PWM &
Logic
Driver
C2
GND
SW
FB
+
+
VIN
VIN
VREF
SHDN
RC
CC
RS
N1
Figure 23. Block Diagram
VOUT
ILED
A1
A2


Codice articolo simile - W-6137

Produttore elettroniciIl numero della parteScheda tecnicaSpiegazioni elettronici
logo
Copal Electronics
W-6139 COPAL-W-6139 Datasheet
304Kb / 13P
   22 V High Current Boost
W-6139TD-GE COPAL-W-6139TD-GE Datasheet
304Kb / 13P
   22 V High Current Boost
W-6139TD-GT COPAL-W-6139TD-GT Datasheet
304Kb / 13P
   22 V High Current Boost
More results

Descrizione simile - W-6137

Produttore elettroniciIl numero della parteScheda tecnicaSpiegazioni elettronici
logo
Catalyst Semiconductor
CAT37 CATALYST-CAT37 Datasheet
168Kb / 13P
   CMOS White LED Driver Boost Converter
CAT37 CATALYST-CAT37_05 Datasheet
557Kb / 12P
   CMOS White LED Driver Boost Converter
logo
ON Semiconductor
CAT4137 ONSEMI-CAT4137 Datasheet
179Kb / 16P
   CMOS Boost Converter - White LED Driver
February, 2010 ??Rev. 2
logo
Texas Instruments
CAT37 TI-CAT37_08 Datasheet
248Kb / 13P
[Old version datasheet]   CMOS White LED Driver Boost Converter
logo
ON Semiconductor
CAT37 ONSEMI-CAT37 Datasheet
149Kb / 11P
   CMOS White LED Driver Boost Converter
February, 2010 ??Rev. 21
logo
Catalyst Semiconductor
CAT4137 CATALYST-CAT4137 Datasheet
302Kb / 14P
   CMOS Boost Converter - White LED Driver
logo
ON Semiconductor
CAT37TDI-T3 ONSEMI-CAT37TDI-T3 Datasheet
187Kb / 13P
   CMOS White LED Driver Boost Converter
Doc. No. MD-5005 Rev. V
CAT4137TD-T3 ONSEMI-CAT4137TD-T3 Datasheet
251Kb / 16P
   CMOS Boost Converter - White LED Driver
Doc. No. MD-5012 Rev. C
CAT4137 ONSEMI-CAT4137_11 Datasheet
170Kb / 15P
   CMOS Boost Converter - White LED Driver
November, 2011 ??Rev. 3
logo
Sanyo Semicon Device
LV56351JA SANYO-LV56351JA Datasheet
316Kb / 8P
   Bi-CMOS IC 1ch DC/DC boost converter
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16


Scheda tecnica Scarica

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEETIT.COM
Lei ha avuto il aiuto da alldatasheet?  [ DONATE ] 

Di alldatasheet   |   Richest di pubblicita   |   contatti   |   Privacy Policy   |   scambio Link   |   Ricerca produttore
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