LP3944ISQ/NOPB ,RGB/White/Blue 8-LED Fun Light Driver 24-WQFN -40 to 85FEATURES DESCRIPTIONLP3944 is an integrated device capable of2• Internal Power-on Resetindependentl ..
LP3944ISQX ,RGB/White/Blue 8-LED Fun Light Driverapplications where it is required to cut down on bus traffic.Key SpecificationsTraditionally,todimL ..
LP3945EV ,Battery Charge Management SystemFeaturesn Integrated pass transistorTheLP3945andLP3946arecompletechargemanagementsystemsthatsafelyc ..
LP3945ILD ,Battery Charge Management SystemPin DescriptionPin # LP3945 LP3946 Description1 EN EN Charger Enable Input. Internally pulled high ..
LP3945LD ,Battery Charge Management Systemfeatures Ni-MH charging mode n 1% charger voltage accuracy over 0˚C ≤ T ≤ 85˚CJas well. The charger ..
LP3946LD ,Battery Charge Management SystemPin DescriptionPin # LP3945 LP3946 Description1 EN EN Charger Enable Input. Internally pulled high ..
LT1028CSW ,Ultra Low Noise Precision High Speed Op Amps
LT1028CSW ,Ultra Low Noise Precision High Speed Op Amps
LT1028CSW ,Ultra Low Noise Precision High Speed Op Amps
LT1030C , QUADRUPLE LOW-POWER LINE DRIVER
LT1030CD ,Quadruple Low-Power Line Drivermaximum ratings” may cause permanent damage to the device. These are stress ratings only, andfuncti ..
LT1030CDR ,Quadruple Low-Power Line Drivermaximum ratings over operating free-air temperature range (unless otherwise noted)Supply voltage ra ..
LP3944ISQ/NOPB
RGB/White/Blue 8-LED Fun Light Driver 24-WQFN -40 to 85
Blue LEDs
+5V
+5V G B
LED0
LED2
LED1
LED3
LED4
LED5
LED6
LED7
RESET
VDD
GND
SMBUS2C contains an internal precision oscillator that provides
Internal Precision Oscillator all the necessary timing required for driving
LED. Two prescaler registers along with two
• Variable Dim Rates (from 6.25 msto 1.6s; 160 registers providea versatile duty cycle control.
Hz–0.625 Hz) LP3944 contains the ability to dim LEDs
SMBUS/I2C applications whereitis required
APPLICATIONS down on bus traffic.
Customized Flashing LED Lights for Cellular Traditionally,to dim LEDs usinga serial shift
Phones suchas 74LS594/5 would requirea large amount
• Portable Applications traffic to be on the serial bus. LP3944
requires only the setupof the frequency and
• Digital Camerascycle for each output pin. From then on, only
• Indicator Lamps command from the hostis requiredto turn
• General Purpose I/O Expander individual open drain output ON, OFF,orto
programmed frequency and duty cycle. Maximum
• Toysoutput sink currentis 25 mA per pin and 200
package. Any ports not used for controlling the
KEY SPECIFICATIONS can be used for general purpose input/output
• 8 LED Driver (Multiple Programmable expansion.
States—On, Off, Input, and Dimmingata
Specified Rate) 8 Open Drain Outputs Capableof Driving upto mA per LED
Typical Application Circuit
