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PDF GM19371 Data sheet ( Hoja de datos )
| Número de pieza | GM19371 | |
| Descripción | BOOST WHITE LED DRIVER | |
| Fabricantes | Gamma | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de GM19371 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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GM19371
BOOST WHITE LED DRIVER
WITH OVP
Description
The GM19371 is a step up DC/DC convert
specifically designed to drive white LED;s with a
constant current. The device can drive up to 27
LEDs from a 5V supply.
Additional feature includes output voltage limiting
when LEDs are disconnected.
GM19371 is available in SOT-26 package.
Features
Inherently matched LED current
Drives up to 126LEDs (9S14P) from a
12V supply
36V rugged bipolar switch
Fast 1.2MHz switching frequency
Over Voltage Protection, 30V
Application
Cellular phones
PDAs, Handheld Computers
Digital Cameras
Typical Application Circuits
MP3 Player
GPS Receivers
MR16 Lighting
VIN
6V to 18V
DIM
10µH
D1
C1
4.7µF
61
VIN SW
OVP 5
GM19371
4 CTRL
GND
2
FB 3
14 Strings in Parallel
9 LED in Series
RSET 20mA x 14
Figure 1 GM19371 typical application
C2
4.7µF
www.gammamicro.com.tw 1
Free Datasheet http://www.datasheet4u.com/
1 page  
GM19371
BOOST WHITE LED DRIVER
WITH OVP
Typica; Application Circuits
VIN
5V to 12V
OFF ON
L D1
14 Strings in Parallel
6 - 9 LED in Series
CIN
4.7µF
6
VIN
1
SW
OVP 5
GM19371
4 CTRL
FB 3
GND
2
RSET 20mA x 14
COUT
4.7µF
Figure 3 GM19371, typical application
VIN
12V to 15V
Dimming
Control
L1 D1
68µH
CIN
4.7µF
6
VIN
1
SW
SS14
OVP 5
COUT
4.7µF
GM19371
4 CTRL
FB 3
GND
2
RSET
0.22 350mA
Figure 4. GM19371 – application for 1W LED x 6
VIN
12V AC
L1 D1 5 LED (1W) in Series
CIN 6 1
VIN SW
OVP 5
GM19371
4 CTRL
FB 3
GND
2
RSET
COUT
Figure 5. GM19371 – application for 1MR16 with 1W LED in series
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet GM19371.PDF ] | |
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