DataSheetWiki


RT8576 fiches techniques PDF

Richtek - High Voltage 8-CH LED Driver

Numéro de référence RT8576
Description High Voltage 8-CH LED Driver
Fabricant Richtek 
Logo Richtek 





1 Page

No Preview Available !





RT8576 fiche technique
RT8576
High Voltage 8-CH LED Driver
General Description
The RT8576 is an 8-CH LED driver capable of delivering
120mA for each channel. The RT8576 is a current mode
boost converter with an adjustable switching frequency
via the OSC pin from 100kHz to 1MHz and a wide VIN
range from 9V to 28V.
The PWM output voltage loop selects and regulates the
LED pin with the highest voltage string to 0.6V, hence
allowing voltage mismatches between LED strings. The
RT8576 automatically detects and disconnects any
unconnected and/or broken strings during operation from
PWM loop to prevent VOUT from over voltage.
The 3% matched LED currents on all channels are simply
programmed with a resistor. A very high contrast ratio true
digital PWM dimming can be achieved by driving the PWM
pin with a PWM signal.
When an abnormal situation (open/short/thermal) occurs,
a state signal will be sent to the system to shut down the
IC.
The RT8576 is available in TSSOP-24 (Exposed Pad) and
SOP-24 packages.
Ordering Information
RT8576
Package Type
CP : TSSOP-24 (Exposed Pad)
S : SOP-24
Lead Plating Systeme
G : Green (Halogen Free and Pb Free)
Note :
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.
Features
z Wide Input Supply Voltage Range : 9V to 28V
z Adjustable Boost Controller Switching Frequency
from 100kHz to 1MHz
z Programmable Channel Current
z Channel Current Matching : ±3%
z External Dimming Control
z Boost MOSFET Over Current Protection
z Automatic LED Open/Short Protection to Avoid
Output Over Voltage
z VIN Under Voltage Lockout
z Adjustable Over Voltage Protection
z Under Voltage Protection
z Thermal Shutdown Protection
z Abnormal State Indicator for Open/Short/Thermal
Condition
z RoHS Compliant and Halogen Free
Applications
z LCD TV, Monitor Display Backlight
z LEDDriver Application
z General Purpose Constant Current Source
Marking Information
RT8576GCP
RT8576
GCPYMDNN
RT8576GCP : Product Number
YMDNN : Date Code
RT8576GS
RT8576
GSYMDNN
RT8576GS : Product Number
YMDNN : Date Code
DS8576-00 April 2011
www.richtek.com
1

PagesPages 14
Télécharger [ RT8576 ]


Fiche technique recommandé

No Description détaillée Fabricant
RT8572 High Voltage 8-CH LED Driver Richtek
Richtek
RT8573 High Voltage Boost/SEPIC Controller Richtek
Richtek
RT8576 High Voltage 8-CH LED Driver Richtek
Richtek

US18650VTC5A

Lithium-Ion Battery

Sony
Sony
TSPC106

PCI Bus Bridge Memory Controller

ATMEL
ATMEL
TP9380

NPN SILICON RF POWER TRANSISTOR

Advanced Semiconductor
Advanced Semiconductor


www.DataSheetWiki.com    |   2020   |   Contactez-nous  |   Recherche