Os motores de busca de Datasheet de Componentes eletrônicos
  Portuguese  ▼
ALLDATASHEETPT.COM

X  

Preview PDF HTML

LP85571 Folha de dados(PDF) 17 Page - Texas Instruments

Nome de Peças LP85571
Descrição Electrónicos  LP8557 High-Efficiency LED Backlight Driver For Tablets
PDF  49 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrônico  TI2 [Texas Instruments]
Página de início  https://www.ti.com
Logo TI2 - Texas Instruments

LP85571 Folha de dados(HTML) 17 Page - Texas Instruments

Back Button LP85571 Datasheet HTML 13Page - Texas Instruments LP85571 Datasheet HTML 14Page - Texas Instruments LP85571 Datasheet HTML 15Page - Texas Instruments LP85571 Datasheet HTML 16Page - Texas Instruments LP85571 Datasheet HTML 17Page - Texas Instruments LP85571 Datasheet HTML 18Page - Texas Instruments LP85571 Datasheet HTML 19Page - Texas Instruments LP85571 Datasheet HTML 20Page - Texas Instruments LP85571 Datasheet HTML 21Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 17 / 49 page
background image
PWM CONTROL
CURRENT CONTROL
25%
100%
25%
50%
100%
25%
50%
100%
PWM CONTROL
HYBRID PWM & CURRENT CONTROL
BRIGHTNESS
BRIGHTNESS
100%
50%
25%
100%
25%
50%
100%
PURE CURRENT CONTROL
BRIGHTNESS
50%
LP8557, LP85571
www.ti.com
SNVSA15B – DECEMBER 2013 – REVISED DECEMBER 2015
Feature Description (continued)
Figure 29. Dimming Methods
8.3.2.7 Phase Shift PWM Scheme
The phase shift PWM (PSPWM) scheme allows delay of the time when each LED current sink is active. When
the LED current sinks are not activated simultaneously, the peak load current from the boost output is greatly
decreased. This reduces the ripple seen on the boost output and allows smaller output capacitors to be used.
Reduced ripple also reduces the output ceramic capacitor audible ringing. The PSPWM scheme also increases
the load frequency seen on the boost output by up to six times, therefore transferring the possible audible noise
to the frequencies outside the audible range.
The phase difference between each active driver is automatically determined as 360°/number of active drivers.
Copyright © 2013–2015, Texas Instruments Incorporated
Submit Documentation Feedback
17
Product Folder Links: LP8557 LP85571



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49


Folha de dados Download

Go To PDF Page


Ligação URL



ALLDATASHEET é útil para você?  [ DONATE ] 

Sobre Alldatasheet   |   Publicidade   |   Contato conosco   |   Privacy Policy   |   Link para a ficha técnica    |   roca de Link   |   Lista de Fabricantes
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
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