RT4832AWSC datasheet(14/26 Pages) RICHTEK

14 / 26 page

RT4832A

is a registered trademark of Richtek Technology Corporation.

www.richtek.com

DS4832A-00

January

2017

Address

Address Name

BIT

R/W

Default

(Reset Value)

Description

0x0C

pwr_sav

R/W

Power saving mode, [0] = Disable, [1] = Enable

DSV_VPOS_en

R/W

DSV VPOS enable, [0] = Disable, [1] = Enable

DSV_VPOS_gnd

R/W

DSV VPOS Ground, [0] = Floating,

[1] = Grounding only function when VPOS is

disable

DSV_VPOS_disc

R/W

DSV VPOS discharge 20ms when shutdown,

[0] = Disable, [1] = Enable

DSV_VCPOUT_en

R/W

DSV VCPOUT enable, [0] = Disable, [1] = Enable

DSV_ VCPOUT _gnd

R/W

DSV VCPOUT Ground, [0] = Floating,

[1] = Grounding only function when VCPOUT is

disable

DSV_ VCPOUT _disc

R/W

DSV VCPOUT discharge 20ms when shutdown,

[0] = Disable, [1] = Enable

DSV_Startup

R/W

DSV startup mode

[0] = closed loop, waiting 80%

[1] = open loop, go after soft-start dimming

0x0D

DSV_delay

7:6

R/W

DSV delay time between VPOS and VCPOUT

[00] = No constraint

[01] = 1ms

[10] = 2ms

[11] = 5ms

Vboost Voltage

5:0

R/W

101000

[000000] = 4V

…..

[010100] = 5V

……

[101011] = 6.15V (0.05V per step)

0x0E

DSV_VPOS_slew

7:6

R/W

VPOS rising slew rate control

[00] = 8.5mV/

s

[01] = 5.6mV/

s,

[10] = 4.6mV/

s

[11] = 2.8mV/

s

VPOS Voltage

5:0

R/W

011110

[000000] = 4V

…..

[011110] = 5.5V

……

[101000] = 6V (0.05V per step)

0x0F

DSV_VCPOUT_slew 7:6

R/W

VCPOUT falling slew rate control

[00] = 9.9mV/

s

[01] = 6.2mV/

s,

[10] = 4.9mV/

s

[11] = 2.9mV/

s

VCPOUT Voltage

5:0

R/W

011100

[000000] =

4V

…..

[011100] =

5.4V

……

[101000] =

6V (0.05V per step)

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