LP85571 datasheet(37/49 Pages) TI2

tên linh kiện	LP85571

Giải thích chi tiết về linh kiện	LP8557 High-Efficiency LED Backlight Driver For Tablets

PDF	49 Pages

Scroll/Zoom	100%

nhà sản xuất	TI2 [Texas Instruments]

Trang chủ	https://www.ti.com

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37 / 49 page

VIN

LP8557I

1.1 ” 9OUT / VIN ” 11

VDD

CIN

COUT

LED1

LED2

LED3

LED4

LED5

LED6

GNDs

SCL

SDA

2.7 V ± 5.5 V

7 V ± 28 V

PWM

VOUT

SDA

SCL

VIN = 200 mV/div

ILED = 1 A/div

IIN = 1 A/div

VTX = 5 V/div

ms/DIV

VDD

5V/DIV

ILED

20mA/DIV

10V/DIV

VBOOST

VPWM

5V/DIV

VIN = 200 mV/div

ILED = 1 A/div

IIN = 1 A/div

VTX = 5 V/div

4ms/DIV

VDD

5V/DIV

ILED

20mA/DIV

10V/DIV

VBOOST

VPWM

5V/DIV

LP8557, LP85571

www.ti.com

SNVSA15B – DECEMBER 2013 – REVISED DECEMBER 2015

Figure 46. Shutdown Operation

Figure 45. Start-Up With a 100% Input PWM Duty

9.2.2 LP8557I PWM and I2C Device Option

Figure 47. Typical Application With LP8557I PWM and I2C Device Option

9.2.2.1 Design Requirements

See Design Requirements.

9.2.2.2 Detailed Design Procedure

See Detailed Design Procedure.

9.2.2.3 Application Curves

See Application Curves.

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Product Folder Links: LP8557 LP85571

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