 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
LP5018RSMR Datasheet(PDF) 10 Page - Texas Instruments |
|
|
||||||||||||||||||||||||||||||
LP5018RSMR Datasheet(HTML) 10 Page - Texas Instruments |
|
|
10 / 49 page  OUT0 VLED 12 Bits 29 kHz PWM Generators VCC Bandgap IREF Setting Current Digital Interface V1P8 LDO Digital Control Oscillator 15MHz Thermal Shutdown OUT1 OUT2 OUT21 OUT22 OUT23 GND VCC VCAP EN SDA SCL ADDR0 ADDR1 IREF 10 LP5018, LP5024 SLVSEB8 – MARCH 2018 www.ti.com Product Folder Links: LP5018 LP5024 Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated 8 Detailed Description 8.1 Overview The LP50xx device is an 18- or 24-channel constant-current-sink LED driver. The LP50xx device includes all necessary power rails, an on-chip oscillator, and a two-wire serial I2C interface. The maximum constant-current value of all channels is set by a single external resistor. Two hardware address pins allow up to four devices on the same bus. An automatic power-saving mode is implemented to keep the total current consumption under 10 µA, which makes the LP50xx device a potential choice for battery-powered end-equipment. The LP50xx device is optimized for RGB LEDs regarding to both live effects and software efforts. The LP50xx device controls each LED output with 12-bit PWM resolution at 29-kHz switching frequency, which helps achieve a smooth dimming effect and eliminates audible noise. The independent color-mixing and brightness-control registers make the software coding straightforward. When targeting a fade-in, -out type breathing effect, the global RGB bank control reduces the microcontroller loading significantly. The LP50xx device also implements a PWM phase-shifting function to help reduce the input power budget when LEDs turn on simultaneously. 8.2 Functional Block Diagram 8.3 Feature Description 8.3.1 PWM Control for Each Channel Most traditional LED drivers are designed for the single-color LEDs, in which the high-resolution PWM generator is used for brightness control only. However, for RGB LEDs, both the color mixing and brightness control should be addressed to achieve the target effect. With the traditional solution, the users must handle the color mixing and brightness control simultaneously with a single PWM register. Several undesired effects occur: the limited dimming steps, the complex software design, and the color distortion when using a logarithmic scale control. |
Similar Part No. - LP5018RSMR |
|
Similar Description - LP5018RSMR |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
