|
|
PDF KB4313 Data sheet ( Hoja de datos )
| Número de pieza | KB4313 | |
| Descripción | Constant Current 12 Watt Boost White-LED Driver | |
| Fabricantes | Kingbor Technology | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de KB4313 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
|
No Preview Available !
Kingbor Technology Co.,Ltd
TEL:(86)0755-26508846 FAX:(86)0755-26509052
KB4313
High Efficiency, Constant Current
12 Watt Boost White-LED Driver
FEATURES
•Operating Voltage:2.4V~6.5V
•High Operating Frequency: 1.5MHz
•High Efficiency: Up to 95%
•High Output Voltage: Up to 34V(max)
•High Output Power: Up to 12W(Vin=12V)
•Shutdown Current <1PA
•16V Output Over-voltage protection (min)
•Digital Dimming Control.
•Built-in Cycle-by Cycle Current-limiting.
•Built-in Soft-Start Function.
•0.2V Low Reference Voltage(3%)
•Tiny SOT23-6 Package
APPLICATIONS
• LED Module
• LED Backlight for LCD Display(7”~21” )
• Constant Current Source!
• USB host
DESCRIPTION
The KB4313 step-up converter drives white LEDs
with a constant current to provide backlight in cell
phones, PDAs, and other hand-held devices. It
features allowing series connection of the white
LEDs so that the LED currents are identical for
uniform brightness. An enable input can be pulsed
repeatedly to adjust LED’s brightness. The fast 1.5
MHz current-mode PWM control allows for smaller
capacitor and inductor. Fault condition protection
uses cycle-by-cycle current limiting to sense
maximum inductor current, thermal protection and
over-voltage protection. Also included soft-start
eliminates inrush current during start-up. The 0.2V
low reference voltage minimized the power loss
across the current-setting resistor.
The KB4313 is available in SOT23-6 packages /
SIMPLIFIED BLOC DIAGRAM
VIN
EN
FB
OVP
ON/OFF
Control
Logic / PWM
Dimming
Control
CTL
VREF(200mV)
+
-
VREF
0.2V
VBG
1.23V
Soft-Start
Control Logic
16V-20V(6.5uA)
VBG
+
-
Overvoltage
Protection
Current Limit
1.4A
+
-
N
CTL
GND
LX
REV: 2.0
1
1 page  
Kingbor Technology Co.,Ltd
TEL:(86)0755-26508846 FAX:(86)0755-26509052
APPLICATION CIRCUIT
KB4313
High Efficiency, Constant Current
12 Watt Boost White-LED Driver
VIN1
12V
4.7uF
VIN2
2.4V to 6.0V
1uF
ON
OFF
PWM
Signal
10uH
LX
1N5819
+
22uF
16V
Tan
OVP
VIN
KB4313
EN FB
GND
330K
3W x 5 LEDs
TBD
Figure 1a. kB4313 Typical Application Circuit with 700mA 18V Output .
VIN
3.4V to 4.2V
2.2uF
ON
OFF
PWM
Signal
VIN
10uH
1N5817
+
22uF
LX 16V
Tan
OVP
KB4313
1LED
3W,1W,3x1W
EN FB
GND
0.285/0.57/0.666
R
From DSP
CE2300
Figure 1b. kB4313 Typical Application Circuit with 700mA /350mA/300mA Output .
REV: 2.0
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet KB4313.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| KB4312 | Constant Current Switching Regulator | Kingbor Technology |
| KB4313 | Constant Current 12 Watt Boost White-LED Driver | Kingbor Technology |
| KB4314 | Constant Current 1 Watt Boost White-LED Driver | Kingbor Technology |
| KB4317 | Constant Current 2 Watt Boost White-LED Driver | Kingbor Technology |
| 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 |