RT4539AWSC datasheet(14/39 Pages) RICHTEK

14 / 39 page

RT4539A

is a registered trademark of Richtek Technology Corporation

www.richtek.com

DS4539A-01

December 2022

For WQFN-24L 4x4 Package

Slave Address: b0111_100

Address

bit7

bit6

bit5

bit4

bit3

bit2

bit1

bit0

Default

Value

0x00

Spread

Spectrum

LX Edge Rate

Control

Mixed Mode

Change Duty

Dimming Mode Selection

0x6B

0x01

Switching

Current

Limitation

Selection

Boost Switching Frequency

0x17

0x02

ILED Current Setting

0x82

0x03

ILED

Mapping

Mode

LED driver

headroom

Bit selection

0x04

ILED Brightness MSB Register

0x00

0x05

ILED Brightness LSB Register

0x00

0x06

Filter

Slope Time Control

Fade In / Out Time Control

0xA8

0x07

PWM sample rate

Advanced Brightness

Control

0x00

0x08

26KHz Mode Division

Frequency

Soft Start Time

Control

0x00

0x09

Lowest Switching Frequency for PFM

Control

CLK PFM

Function

Enable

0x78

0x0A

LED Short

Protection

LED OVP Level

Boost Over-voltage Protection selection

0x1Dh

0x0B

BL_EN

FB6_EN FB5_EN FB4_EN

FB1_EN

FB2_EN FB3_EN

0xFE

0xFF

MTP

Programming

MTP

Read 0x00

Note: Blank parts in this table are restricted registers.

RT4539AWSC 数据表(PDF) 14 Page - Richtek Technology Corporation

RT4539AWSC 数据表(HTML) 14 Page - Richtek Technology Corporation

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RT4539AWSC 数据表(PDF) 14 Page - Richtek Technology Corporation

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