DatasheetsPDF.com

ADP5501

Analog Devices
Part Number ADP5501
Manufacturer Analog Devices
Description Programmable Current Backlight Driver
Published Jun 28, 2009
Detailed Description 10kΩ 10kΩ 2.2kΩ 2.2kΩ 07780-001 Programmable Current Backlight Driver with Ambient Light Sensor Input ADP5501 FEATURES...
Datasheet PDF File ADP5501 PDF File

ADP5501
ADP5501

Overview
10kΩ 10kΩ 2.
2kΩ 2.
2kΩ 07780-001 Programmable Current Backlight Driver with Ambient Light Sensor Input ADP5501 FEATURES Efficient asynchronous boost converter for driving up to 6 white LEDs 2.
7 V to 5.
5 V input voltage range 128 programmable backlight LED current levels (30 mA maximum) Programmable backlight fade-in/fade-out times Programmable backlight dim and off times Ambient light sensing with autonomous backlight adjustment 3 auxiliary LED current sinks 64 programmable auxiliary LED current levels (14 mA maximum) Programmable auxiliary LED fade-in/fade-out times Programmable auxiliary LED on and off times (allows blinking) I2C-compatible serial interface Interrupt line for signaling an external processor (INT) Hard reset (RST) Current limit protection Thermal overload protection Available in small 4.
0 mm × 4.
0 mm, 24-lead LFCSP package APPLICATIONS Display backlight driver with ambient light sensor input and control and multiple LED indicator sinks TYPICAL OPERATING CIRCUIT 2.
7V TO 5.
5V 1µF I/O RAIL 4.
7µH 1µF 2 1 PGND SW 21 VBAT 22 BST 23 BL_SNK CAP_OUT 20 16 VDDIO 5 SCL 4 SDA 3 INT 15 RST ADP5501 GND 19 GND 18 GND 24 CMP_IN 17 RGB NC NC NC NC NC NC 6 7 8 9 10 11 LED1 LED2 LED0 12 13 14 1µF 100nF VBAT 3.
3V Figure 1.
GENERAL DESCRIPTION The ADP5501 is a versatile, single-chip, white LED backlight driver with programmable ambient light sensor input and programmable LED current.
This device is designed for mediaenabled handset applications.
The ADP5501 uses an I2C®compatible serial interface and a single line interrupt to communicate with the host processor.
The ADP5501 can detect ambient light levels and adjust the backlight brightness accordingly, resulting in extended battery life.
Once configured, the ADP5501 is capable of controlling the display backlight intensity, on/off timing, dimming, and fading without the intervention of the main processor, which translates into valuable battery power savings.
The three auxiliary LEDs are also capa...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)