 |
Zakładka z wyszukiwarką danych komponentów |
|
|
Zakładka z wyszukiwarką danych komponentów |
|
LP5521TM Arkusz danych(PDF) 36 Page - Texas Instruments |
|
|
|||||||||||||||||||||||||||||
LP5521TM Arkusz danych(HTML) 36 Page - Texas Instruments |
|
|
36 / 51 page  LP5521 MCU COUT 1 µF CIN 1 µF 0.47 µF CFLY1 CFLY2 SCL SDA CLK_32K INT ADDR_SEL0 ADDR_SEL1 TRIG EN VDD GNDs R G B VOUT CFLY1P CFLY1N CFLY2P CFLY2N RGB LED 0...25.5 mA/LED GPO 0.47 µF Copyright © 2016, Texas Instruments Incorporated 36 LP5521 SNVS441I – JANUARY 2007 – REVISED NOVEMBER 2016 www.ti.com Product Folder Links: LP5521 Submit Documentation Feedback Copyright © 2007–2016, Texas Instruments Incorporated 8 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 8.1 Application Information The LP5521 is designed as a autonomous lighting controller for mobile devices. These devices need extremely small form factor; therefore, the LP5521 is designed to require only 4 small capacitors: input, output, and two fly- capacitors for charge pump. If charge pump is not needed in the application (input voltage is high enough for driving LEDs), the charge pump capacitors can be omitted thus reducing the solution size even further. LED can be RGB LED or any color if desired. 8.2 Typical Applications Application with Charge Pump shows an example of typical application which uses charge pump to get high enough voltage to drive LEDs. The device is powered from single Li-Ion battery with voltage range of 2.7 V to 4.2 V. 8.2.1 Application with Charge Pump Figure 26. LP5521 Typical Application Schematic With Charge Pump 8.2.1.1 Design Requirements DESIGN PARAMETER EXAMPLE VALUE Input voltage range 2.7 V to 4.2 V (single Li-Ion cell battery) LED VF (maximum) 3.6 V LED current 25.5 mA maximum Input capacitor CIN = 1 μF Output capacitor COUT = 1 μF Fly capacitors CFLY1 = CFLY2 = 470 nF Charge pump mode Automatic or 1.5× |
|
Link URL |
| Czy Alldatasheet okazała się pomocna? [ DONATE ] |
O Alldatasheet | Reklama | Kontakt | Polityka prywatności | Link do karty katalogowej | Linki | Lista producentów 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 |
Polish ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
