RT8473 Datasheet PDF - Richtek

www.Datasheet-PDF.com

RT8473
Richtek

Part Number RT8473
Description High Brightness LED Driver
Page 12 Pages


RT8473 datasheet pdf
Download PDF for PC
RT8473 pdf
View PDF for Mobile


No Preview Available !

®
RT8473
1A, Hysteretic, High Brightness LED Driver with Internal
Switch
General Description
The RT8473 is a high efficiency, continuous mode inductive
step-down converter, designed for driving single or multiple
series connected LEDs from a voltage source higher than
the LED voltage. It operates from an input voltage of 7V to
30V and employs hysteretic control with a high side current
sense resistor to set the constant output current.
The RT8473 includes an output switch and a high side
output current sensing circuit, which uses an external
resistor to set the nominal average output current. LED
brightness control is achieved with PWM dimming from
an analog or PWM input signal.
The RT8473 is available in a small TSOT-23-5 package.
Ordering Information
RT8473
Package Type
J5 : TSOT-23-5
Note :
Lead Plating System
G : Green (Halogen Free and Pb Free)
Richtek products are :
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
05=DNN
05= : Product Code
DNN : Date Code
Features
z 7V to 30V Input Voltage Range
z Hysteretic Control with High Side Current Sensing
z Internal N-MOSFET with 350mΩ Low RDS(ON)
z 1A Output Current
z Up to 97% Efficiency
z Typical ±5% LED Current Accuracy
z Analog or PWM Control Signal for LED Dimming
z 300Hz On-Board Ramp Generator
z Input Under Voltage Lockout
z Thermal Shutdown Protection
z RoHS Compliant and Halogen Free
Applications
z Automotive LED Lighting
z High Power LED Lighting
z Indicator and Emergency Lighting
z Architectural Lighting
z Low Voltage Industrial Lighting
z Signage and Decorative LED Lighting
Pin Configurations
(TOP VIEW)
VIN SENSE
54
23
LX GND ADJ
TSOT-23-5
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS8473-00 January 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1

RT8473 datasheet pdf
Download PDF for PC
RT8473 pdf
View PDF for Mobile


Related : Start with RT847 Part Numbers by
RT8470 High Brightness LED Driver RT8470
Richtek
RT8470 pdf
RT8471 High Brightness LED Driver RT8471
Richtek
RT8471 pdf
RT8472 High Brightness LED Driver RT8472
Richtek
RT8472 pdf
RT8473 High Brightness LED Driver RT8473
Richtek
RT8473 pdf
RT8474 High Voltage Multiple-Topology LED Driver RT8474
Richtek
RT8474 pdf
RT8474A High Voltage Multiple-Topology LED Driver RT8474A
Richtek
RT8474A pdf
RT8475 High Voltage High Current LED Driver Controller RT8475
Richtek
RT8475 pdf
RT8476 Two-Stage Hysteretic LED Driver Controller RT8476
Richtek
RT8476 pdf

Index :   0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z   NEW   

Since 2010   ::   HOME   ::   Contact