|
|
PDF EUP3654JIR1 Data sheet ( Hoja de datos )
| Número de pieza | EUP3654JIR1 | |
| Descripción | 1X/1.5X Charge Pump White LED Driver | |
| Fabricantes | Eutech Microelectronics | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de EUP3654JIR1 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
|
No Preview Available !
EUP3654
Preliminary
6 Channel, 1X/1.5X Charge Pump
White LED Driver
DESCRIPTION
The EUP3654 is a high efficiency charge pump white
LED driver. It supports 6 white LEDs with regulated
constant current for uniform intensity. The EUP3654
maintains the highest efficiency by utilizing a 1.5X
fractional charge pump and low dropout current
regulators. A low external parts count (two 2.2uF flying
capacitors and two small 2.2uF capacitors at VIN and
VOUT) makes the EUP3654 ideally suited for small
battery-powered applications.The charge pump
provides backlight current utilizing six matched current
sinks. The load and supply conditions determine
whether the charge pump operates in 1x, 1.5x mode.
The EUP3654 uses single wire serial pulse interface
which controls all functions of the device, including
enabling the part and setting LED driver’s current level
with 32 steps.
The EUP3654 also provides an external PWM dimming
control while DPWM duty cycle is controlled directly
from an external PWM signal, adjusting brightness
further based on image contents. And Direct PWM
dimming signal frequency range is from 200Hz to
1KHz.
With a 3mm × 3mm TQFN-16 package and 4 small
capacitors, the EUP3654 provides a complete LED
driver solution with a minimal PCB footprint.
Typical Application Circuit
FEATURES
1X/1.5X Mode for Ultra-High Efficiency
0.5mA to 25mA Output Current for Each
Channel
2.7V to 5.5V Input Voltage
1MHz Fixed Switching Frequency
Single-Wire Serial Pulse Interface to Set LED
Current with 32-Step Scale
External PWM Dimming with 200Hz - 1KHz
Frequency Range
High Backlight Current Matching ±0.5% Typical
High Backlight Current Accuracy ±1.5% Typical
Soft Start Function
Built-In Short-Circuit Protection
Built-in Thermal Protection
IQ<1uA in Shutdown
TQFN 3mm × 3mm TQFN-16 package
RoHS Compliant and 100% Lead(Pb)-Free
Halogen-Free
APPLICATIONS
Cell phones, smart phones, and PDAs
Portable media players
Digital cameras and GPS units
Small LCD Backlighting
Display/keypad backlighting and LED
indicators
DS3654 ver0.1 Nov. 2009
Figure1.
1
1 page  
Tel: 0755-8398 3377 / 135 9011 2223
http://www.gofotech.com
Typical Operating Characteristics
Preliminary
EUP3654
Backlight Matching(6 LEDs) -25mA
0.5
Backlight Matching(6 LEDs) -5mA
0.5
0.4 0.4
0.3 0.3
0.2 0.2
0.1 0.1
0.0 0.0
-0.1
4.2
3.9 3.6 3.3
VIN(V)
3
Enable Transient Response
VIN=3.2V, 6LEDs---- ILED=25mA each channel
-0.1
4.2
3.9 3.6 3.3
VIN(V)
3
Enable Transient Response
VIN=3.2V, 6LEDs---- ILED=5mA each channel
VEN
VOUT
VEN
VOUT
VBL
VBL
IIN IIN
Enable Transient Response
VIN=4.2V, 6LEDs---- ILED=25mA each channel
VEN
VOUT
VBL
IIN
Enable Transient Response
VIN=4.2V, 6LEDs---- ILED=5mA each channel
VEN
VOUT
VBL
IIN
DS3654 ver0.1 Nov. 2009
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet EUP3654JIR1.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| EUP3654JIR1 | 1X/1.5X Charge Pump White LED Driver | Eutech Microelectronics |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |