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LP3944ISQSLASHNOPB中文资料
LP3944ISQSLASHNOPB数据手册规格书PDF详情
1FEATURES
2• Internal Power-on Reset
• Active Low Reset
• Internal Precision Oscillator
• Variable Dim Rates (from 6.25 ms to 1.6s; 160
Hz–0.625 Hz)
APPLICATIONS
• Customized Flashing LED Lights for Cellular
Phones
• Portable Applications
• Digital Cameras
• Indicator Lamps
• General Purpose I/O Expander
• Toys
KEY SPECIFICATIONS
• 8 LED Driver (Multiple Programmable
States—On, Off, Input, and Dimming at a
Specified Rate)
• 8 Open Drain Outputs Capable of Driving up to
25 mA per LED
DESCRIPTION
LP3944 is an integrated device capable of
independently driving 8 LEDs. This device also
contains an internal precision oscillator that provides
all the necessary timing required for driving each
LED. Two prescaler registers along with two PWM
registers provide a versatile duty cycle control. The
LP3944 contains the ability to dim LEDs in
SMBUS/I2C 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. LP3944 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
programmed 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.
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
TexasInstruments |
18+ |
ICLEDDRIVERRGB24-LLP |
6800 |
公司原装现货/欢迎来电咨询! |
|||
TI |
20+ |
原装 |
65790 |
原装优势主营型号-可开原型号增税票 |
|||
NS |
23+ |
QFN |
25000 |
代理原装现货,假一赔十 |
|||
Texas Instruments |
24+ |
24-WFQFN 裸露焊盘 |
39500 |
一级代理/放心采购 |
|||
NS |
09+ |
LLP |
3250 |
普通 |
|||
TI |
25+ |
QFN-24 |
1001 |
就找我吧!--邀您体验愉快问购元件! |
|||
NS/国半 |
23+ |
LLP |
50000 |
全新原装正品现货,支持订货 |
|||
TI |
22+ |
24WQFN |
9000 |
原厂渠道,现货配单 |
|||
LP3944ISQX |
25+ |
13463 |
13463 |
||||
NS |
23+ |
QFN24 |
13000 |
原厂授权一级代理,专业海外优势订货,价格优势、品种 |
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Datasheet数据表PDF页码索引
- P1
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