Electronic Components Datasheet Search |
|
LP3943 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
|
|
LP3943 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
1 / 13 page LP3943 RGB/White/Blue 16-LED Fun Light Driver General Description LP3943 is an integrated device capable of independently driving 16 LEDs. This device also contains an internal pre- cision oscillator that provides all the necessary timing re- quired for driving each LED. Two prescaler registers along with two PWM registers provide a versatile duty cycle con- trol. The LP3943 contains the ability to dim LEDs in SMBUS/ I 2C applications where it is required to cut down on bus traffic. Traditionally, to dim LEDs using a serial shift register such as 74LS594/5 would require a large amount of traffic to be on the serial bus. LP3943 instead requires only the setup of the frequency and duty cycle for each output pin. From then on, only a single command from the host is required to turn each individual open drain output ON, OFF, or to cycle a pro- grammed frequency and duty cycle. Maximum output sink current is 25 mA per pin and 200 mA per package. Any ports not used for controlling the LEDs can be used for general purpose input/output expansion. Features n Internal power-on reset n Active low reset n Internal precision oscillator n Variable dim rates (from 6.25 ms to 1.6s; 160 Hz–0.625 Hz) Key Specifications n 16 LED driver (multiple programmable states — on, off, input, and dimming at a specified rate) n 16 Open drain outputs capable of driving up to 25 mA per LED Applications n Customized flashing LED lights for cellular phones n Portable Applications n Digital Cameras n Indicator Lamps n General purpose I/O expander n Toys Typical Application Circuit 20079601 November 2003 © 2003 National Semiconductor Corporation DS200796 www.national.com |
Similar Part No. - LP3943 |
|
Similar Description - LP3943 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |