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Numéro de référence | XRP7620 | ||
Description | 4-Channel Adjustable Current I2C Controlled LED Driver | ||
Fabricant | Exar Corporation | ||
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1 Page
June 2009
XRP7620
4-Channel Adjustable Current I2C Controlled LED Driver
Rev. 1.0.0
GENERAL DESCRIPTION
The XRP7620 is a multi purpose 4-channel
independently adjustable current sink driver.
Optimized for LED backlighting and
RGBW/RGBA color mixing applications, the
XRP7620 can also be used as a generic
software programmable current sink I/O
expander.
Supporting an industry standard 2-wire I2C
serial interface, the XRP7620 provides full
independent control of each channel and can
be programmed up to a current of 31.5mA in
steps of 0.5mA. Uniform display brightness is
ensured through better than 3% channel to
channel current matching.
Five internal registers are provided to set
operational configuration and individual
channel current programmation. A specific
shutdown mode allows the device to retain the
previously loaded configuration – operational
and current programming – in order to be
reused upon the next enabling.
The XRP7620 is designed to operate from a
single cell lithium-ion battery or fixed 3.3V or
5.0V power rails and is available in a RoHS
compliant, “green”/halogen free space saving
8-pin 2mmx3mm DFN package.
APPLICATIONS
• LCD Display & Keypad Backlighting
• Color Coded Indicator Lighting
• RGBW/RGBA Color Mixing
• Cell Phones & Handheld Devices
• Generic Current Sink I/O Expander
FEATURES
• 4-Channel LED Current Sink Driver
• Individual Channel Current Control
− Up to 31.5mA per channel / 0.5mA Steps
− 100mV Channel Dropout Voltage
• I2C Serial Interface
• 2.7V - 5.5V Input Voltage Range
• 3% Channel Current Matching
• Register Retention in Shutdown
• Shutdown Current <1µA
• Thermal and UVLO Built-in Protection
• RoHS Compliant, “Green”/Halogen
Free 2x3mm 8-Pin DFN package
www.DaTtaYSPheIeCt4UA.cLomAPPLICATION DIAGRAM
Fig. 1: XRP7620 Application Diagram
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 – Fax. +1 510 668-7001
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Pages | Pages 11 | ||
Télécharger | [ XRP7620 ] |
No | Description détaillée | Fabricant |
XRP7620 | 4-Channel Adjustable Current I2C Controlled LED Driver | Exar Corporation |
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TSPC106 | PCI Bus Bridge Memory Controller | ATMEL |
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