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PDF EUP2584VIR1 Data sheet ( Hoja de datos )
| Número de pieza | EUP2584VIR1 | |
| Descripción | White LED Step-Up Converter | |
| Fabricantes | Eutech Microelectronics | |
| Logotipo |  |
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EUP2584
White LED Step-Up Converter
In Tiny SOT-23 Package
DESCRIPTION
The EUP2584 is a constant current step-up converter
specifically designed to drive white LEDs. The Step-up
converter topology allows series connection of the
white LEDs so the LED currents are identical for
uniform brightness. The EUP2584 switches at 1.1MHz,
allowing the use of tiny external components. The
input and output capacitor can be as small as 1µF,
saving space and cost versus alternative solutions. A
low 0.25V feedback voltage minimizes power loss in
the current setting resistor for better efficiency.
EUP2584 is enhanced with Soft-Start function and that
could significantly reduce noise induced by capacitor.
The EUP2584 is available in low profile SOT23-6
package.
FEATURES
z 2.6V to 5.5V Input Range
z 27V Output with Over Voltage Protection
z High Efficiency :85 % Typical
z Internal Soft-Start
z PWM Dimming Control
z Internal High Power 30V MOSFET Switch
z Fast 1.1MHz Switching Frequency
z Small, Low-Profile Inductors and Capacitors
z SOT23-6 Package
z RoHS Compliant and 100% Lead (Pb)-Free
APPLICATIONS
z Mobile Phone
z Digital Still Camera
z PDAs, Handheld Computers
z MP3 Players
z GPS Receivers
Typical Application Circuit
DS2584 Ver1.1 Mar. 2008
Figure 1. White LED Application
1
1 page  
EUP2584Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com
Typical Operating Characteristics
Efficiency vs. Vin (Driving 1WLED)
85%
IO =15m A
84% IO =20m A
83%
Efficiency vs. VIN (Driving 3WLEDs)
90%
88% IO = 20m A
IO = 15m A
86%
82% 84%
81% 82%
80%
2
2.5 3
V in (V )
3.5
Efficiency vs. VIN (Driving 6WLEDs)
84% IO =20m A
IO =15m A
82%
80%
78%
76%
74%
2
345
V in (V )
6
80%
23456
V in (V )
VIN=2.6V Driving 2LEDs Stability
VIN=3.6V Driving 2LEDs Stability
VIN=5V Driving 2LEDs Stability
DS2584 Ver1.1 Mar. 2008
5
5 Page 
Packaging Information
EUP2584Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com
SOT23-6
SYMBOLS
A
A1
b
D
E1
e
E
L
MILLIMETERS
MIN.
MAX.
- 1.45
0.00 0.15
0.30 0.50
2.90
1.60
0.95
2.60 3.00
0.3 0.60
INCHES
MIN.
MAX.
- 0.057
0.000
0.006
0.012
0.020
0.114
0.063
0.037
0.102
0.118
0.012
0.024
DS2584 Ver1.1 Mar. 2008
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet EUP2584VIR1.PDF ] | |
Hoja de datos destacado
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