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AL3050 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - SMALL PANEL BACKLIGHT LED DRIVER - Diodes

भाग संख्या AL3050
समारोह SMALL PANEL BACKLIGHT LED DRIVER
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AL3050 pdf
Typical Applications Circuit
2.7V to 5.5V
VBAT
CIN
2.2µF
PWM or single wire
Dimming Control
L
22µH
VIN SW
CTRL VOUT
GND
FB
Up to 8 LEDs
COUT
1µF
RFB
10W
AL3050
Pin Descriptions
Pin Number
1
2
3
4
5
6
-
Pin Name
CTRL
VIN
VOUT
FB
GND
SW
Thermal Pad
Function
Control pin of the boost converter. It is a multi-functional pin which can be used for enable control, PWM and
digital dimming.
Supply input pin. A capacitor should be connected between the VIN pin and GND pin to keep the DC input
voltage constant.
Output of the boost converter.
Feedback pin for current. Connect a resistor between this pin and GND to set the current.
Ground.
This is the switching node of the IC. Connect the inductor between the VIN and SW pin.
The thermal pad should be soldered to the analog ground plane. If possible, use thermal via to connect to
ground plane for ideal power dissipation.
Functional Block Diagram
VIN
SW
UVLO
CTRL
OSC
Soft
Start-up
Gate Driver
Control
Ramp
Generator
+
Comp
-
-+
Curren+t
Sensor
-
Error
Amp
+
VREF
PWM & EasyScale
Reference Control
OVP
Detection
VOUT
FB
GND
AL3050
Document number: DS38578 Rev. 2 - 2
2 of 16
www.diodes.com
July 2016
© Diodes Incorporated

विन्यास 16 पेज
डाउनलोड[ AL3050 Datasheet.PDF ]


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अनुशंसा डेटापत्रक

भाग संख्याविवरणविनिर्माण
AL3050SMALL PANEL BACKLIGHT LED DRIVERDiodes
Diodes


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