RT3624LE datasheet(20/48 Pages) RICHTEK

20 / 48 page

RT3624LE

is a registered trademark of Richtek Technology Corporation

www.richtek.com

DS3624LE-00

April

2022

Function Setting

Symbol

Description

SET4

Divider Register[4:3] GTUS VR Phase Extension

DBLR[4:3]

DBLR[4:3] = 00: Enable, Phase=8

DBLR[4:3] = 01: Disable, Phase=1~4

DBLR[4:3] = 10: Enable, Phase=5

DBLR[4:3] = 11: Enable, Phase=6

Divider Register[2:0]

VCCSA VR TON width setting

(switching frequency)

kTON_A[2:0]

According to required frequency,

select adaptive kTON_A parameter.

IXR Register[4:3]

GTUS VR Anti-overshoot

trigger level

ANTIOVS_TH[4:3]

ANTIOVS for reduction of overshoot

at loading falling edge. Set trigger

level.

IXR Register[2:1]

VCCSA VR Anti-overshoot

trigger level

ANTIOVS_TH_A[2:1]

ANTIOVS for reduction of overshoot

at loading falling edge. Set trigger

level.

TSEN

Divider Register[4:3] GTUS VR Current Gain

Ai[4:3]

Current gain setting

Divider Register[2:1]

GTUS VR Adaptive Quick

Response(AQR) trigger level

AQR_TH[2:1]

AQR for loop response speed-up of

loading rising edge. Set trigger level.

TSENA

Divider Register[4:3] VCCSA VR Current Gain

Ai_A[4:3]

Current gain setting

Divider Register[2:1]

VCCSA VR Adaptive Quick

Response(AQR) trigger level

AQR_TH_A[2:1]

AQR for loop response speed-up of

loading rising edge. Set trigger level.

Referring to PIN-SETTING tables, Table 2 to 11, users

can search corresponding Vdivider or VIXR according to

the desired function setting combinations. Then SETx

external resistors can be calculated as follows:

IXR

divider

3.2V V

80 A V

R1 V

3.2V V

−

Richtek provides a Microsoft Excel-based design tool to

calculate the desired PIN-SETTING resisters.

TSEN and TSENA pins also have function settings

except for thermal monitoring function. They only utilize

divider

part

PIN-SETTING

mechanism.

The

functions of TSEN and TSENA include current gain and

quick response trigger level settings. The detailed

operation is described in Thermal Monitoring and

Indicator section.

RT3624LE Datasheet(PDF) 20 Page - Richtek Technology Corporation

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