DataSheetWiki


LM2793LD fiches techniques PDF

National Semiconductor - Low Noise White LED Constant Current Supply with Dual Function Brightness Control

Numéro de référence LM2793LD
Description Low Noise White LED Constant Current Supply with Dual Function Brightness Control
Fabricant National Semiconductor 
Logo National Semiconductor 





1 Page

No Preview Available !





LM2793LD fiche technique
February 2003
LM2793
Low Noise White LED Constant Current Supply with
Dual Function Brightness Control
General Description
The LM2793 is a highly efficient, semi-regulated 1.5x CMOS
charge pump that provides dual constant current outputs.
The LM2793 has an input voltage range of 2.7V to 5.5V.
To control LED brightness, the amount of current driven to
the current-mode outputs can be adjusted with an analog
voltage and/or a pulse-width-modulated (PWM) square
wave.
Pre-regulation of the charge pump minimizes conducted
noise on the input. Combined with a fixed switching fre-
quency of 500kHz, the LM2793 is a low-noise solution.
The LM2793 is available in a 10-pin Leadless Lead-frame
package: LLP-10.
Features
n Two Regulated Current Outputs, up to 16mA Each,
Matched to Within ±0.3% (typ.)
n High Efficiency, 1.5x Regulated Charge Pump
n Input Voltage Range: 2.7V to 5.5V
n Soft Start Limits Inrush Current
n Analog Voltage Brightness Control
n PWM Brightness Control
n Very Small Solution Size - NO INDUCTOR
n 500kHz Switching Frequency
n 3µA (typ.) Shutdown Current
n LLP-10 Package: 3.0mm X 3.0mm X 0.8mm
Applications
n White LED Display Backlights
n White LED Keypad Backlights
n 1-Cell LiIon Battery-Operated Equipment Including
PDAs, Hand-held PCs, Cellular Phones
n Flat Panel Displays
Typical Application Circuit
© 2003 National Semiconductor Corporation DS200636
20063602
www.national.com

PagesPages 10
Télécharger [ LM2793LD ]


Fiche technique recommandé

No Description détaillée Fabricant
LM2793LD Low Noise White LED Constant Current Supply with Dual Function Brightness Control National Semiconductor
National Semiconductor
LM2793LDX Low Noise White LED Constant Current Supply with Dual Function Brightness Control National Semiconductor
National Semiconductor

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