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PDF L5100 Data sheet ( Hoja de datos )
| Número de pieza | L5100 | |
| Descripción | WHITE LED STEP-UP CONVERTER | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de L5100 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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UNISONIC TECHNOLOGIES CO.,
L5100
LINEAR INTEGRATED CIRCUIT
WHITE LED STEP-UP
CONVERTER
21
3
DESCRIPTION
The UTC L5100 is a STEP-UP DC/DC Converter and
designed for driving white LEDs with a constant current. It
can drive several LEDs in series by a Li-Ion cell. UTC L5100
switches at a high frequency 1.2MHz, so it can allowing the
use of tiny external components. The output capacitor can be
as small as 0.22µF, saving space and cost compare with
alternative other solutions. The low 95mV feedback voltage
minimizes power loss in the current setting resistor can have
better efficiency.
5
4
SOT-25
1
SOT-363
FEATURES
* Inherently Matched LED Current
* High Efficiency: 83% Typical
* Drives Up to Four LEDs from a 3.2V Supply
* Drives Up to Six LEDs from a 5V Supply
* 36V Rugged Bipolar Switch
* 1.2MHz Switching Frequency
* Uses Tiny 1mm Tall Inductors
* Output Capacitor can be small to only 0.22µF
www.DataSheet4U.com
*Pb-free plating product number: L5100L
ORDERING INFORMATION
Ordering Number
Normal
Lead Free Plating
L5100-AF5-R
L5100L-AF5-R
L5100-AN3-R
L5100L-AN3-R
Package
SOT-25
SOT-363
Packing
Tape Reel
Tape Reel
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co.,
1
QW-R103-024,A
1 page  
L5100
TYPICAL APPLICATION CIRCUIT (cont.)
LINEAR INTEGRATED CIRCUIT
VIN
3V ~ 5V
C IN
1 µF
L
22 µH
D
VDC
DIMMING
VIN SW
90 k
SHDN FB
GND
5k
R1
4Ω
Li- Ion to Four White LEDs
Four LED Efficiency
85
C OUT
0 . 22 µ F
80
VIN= 3V
75
VIN =3 .6 V
70
65
0
5 10 15
LOAD CURRENT (mA)
20
VIN
3V ~ 5V
CIN
1μF
L
22μH
D
VDC
DIMMING
VIN SW
SHDN FB
90k
5k
GND
R1
4Ω
85
COUT
0.22μF
80
75
70
Five LED Efficiency
VIN=3V
VIN=3.6V
Li-Ion to Five White LEDs
65
0 2 4 6 8 10 12
LOAD CURRENT (mA)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5
QW-R103-024,A
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet L5100.PDF ] | |
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