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RT8473 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - High Brightness LED Driver - Richtek

भाग संख्या RT8473
समारोह High Brightness LED Driver
मैन्युफैक्चरर्स Richtek 
लोगो Richtek लोगो 
पूर्व दर्शन
1 Page
		
<?=RT8473?> डेटा पत्रक पीडीएफ

RT8473 pdf
RT8473
Typical Application Circuit
VIN
7V to 30V
C1
10µF/50V
optional
C2
VIN = 7V to 30V
VOUT = 3.5V
IOUT = 1A
optional
R1
100m
RT8473
5 VIN
3 ADJ
SENSE
4
LED+
R2
optional
C3
2 GND
LED-
LX 1
L1
100µH
D1
SR26
optional
R3
C4
Functional Pin Description
Pin No.
1
2
3
4
5
Pin Name
LX
GND
ADJ
SENSE
VIN
Pin Function
Switching Node. Open drain output of internal N-MOSFET.
Ground.
Dimming Control Input :
--- Analog signal input for analog PWM dimming.
--- PWM signal input for digital PWM dimming.
Output Current Sense Terminal. Sense LED string current.
Supply Input Voltage.
Function Block Diagram
VIN
Regulator
Bandgap
UVLO
UVLO
VCC
1.25V
+
-
Ramp Gen.
+ Dimming
ADJ -
SENSE
UVLO
Dimming
MOSFET
LX
GND
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
is a registered trademark of Richtek Technology Corporation.
DS8473-00 January 2012

विन्यास 12 पेज
डाउनलोड[ RT8473 Datasheet.PDF ]


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