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RT6543A PDF预览

RT6543A

更新时间: 2024-11-21 20:10:35
品牌 Logo 应用领域
立锜 - RICHTEK /
页数 文件大小 规格书
21页 337K
描述
暂无描述

RT6543A 技术参数

Status:ActiveVs (typ) (V):12
Vin (min) (V):3Vin (max) (V):24
Vout (min) (V):1.1Vout (max) (V):1.8
Preset Vout (V):Output Adj. Method:Fixed
Accuracy (+/- %):1Freq (typ) (kHz):
Freq (min) (kHz):400Freq (max) (kHz):800
Iq (typ) (mA):0.3Features:Cycle-by-Cycle Current Limit;DCR Current Sense;Droop Control;Droop Control;Fast Transient Response;OCP;OVP;Power Good;Selectable (PSM or PWM);UVP
Package Type:WQFN3x3-20

RT6543A 数据手册

 浏览型号RT6543A的Datasheet PDF文件第2页浏览型号RT6543A的Datasheet PDF文件第3页浏览型号RT6543A的Datasheet PDF文件第4页浏览型号RT6543A的Datasheet PDF文件第5页浏览型号RT6543A的Datasheet PDF文件第6页浏览型号RT6543A的Datasheet PDF文件第7页 
®
RT6543A/B  
High Efficiency Single Synchronous Buck PWM Controller  
for INTEL VCCIN AUX ICL and TGL  
General Description  
Features  
A High Efficiency Step-Down DC-DC Controller  
The RT6543A/B PWM controller provides high efficiency,  
excellent transient response, and highDC output accuracy  
for stepping down high voltage batteries to generate low  
voltage CPU core, I/O, and chipset RAM.  
Built-in 1% Reference Voltage  
2-Bit Programmable Output Voltage with Integrated  
Adjustable Switching Frequency  
Input Voltage Range : 3V to 24V  
Internal Soft-Start to Reduce Inrush Current  
Capability of Driving Large Synchronous Rectifier  
MOSFETs  
The RT6543A/B supports on chip voltage programming  
function between 0V and 1.8V by controlling VID1/VID0  
inputs.  
Compared with conventional current-mode PWMs, the  
RT6543A/B achieves high efficiency without any current  
sensing resistors. Furthermore, the RT6543A/B has ability  
to drive synchronous rectifier MOSFETs and enters diode  
emulation mode at light load condition that also save lots  
of power consumption. Besides, the RT6543A/B equips  
with UVLO, OVP, UVP, OTP and current limit protection.  
All above functions are integrated in a WQFN-20L-3x3  
package.  
Power Good Indicator  
Cycle-by-Cycle Current Limit  
Over-/Under-Voltage Protection  
Thermal Shutdown  
RT6543A : Slew Down Mode as VID Change  
RT6543B : Decay Down Mode as VID Change  
Pin Configuration  
(TOP VIEW)  
Applications  
20 19 18 17 16  
Notebook Computers  
1
2
3
4
5
15  
14  
13  
12  
11  
CS_DIS  
ISENSEP  
ISENSEN  
PGOOD  
COMP  
PVCC  
PGND  
LGATE  
PH  
CPU/GPU Core Supply  
Chipset/RAM Supply  
AGND  
21  
UGATE  
GenericDC-DC Power Regulator  
6
7
8
9 10  
WQFN-20L 3x3  
Simplified Application Circuit  
RT6543A/B  
BOOT  
VSYS  
PVCC  
VSYS  
PVCC  
V
OUT  
BUCK  
LGATE  
VCC  
VCC  
PH  
UGATE  
PGOOD  
ISENSEP  
ISENSEN  
FSWSEL  
EN  
VEN  
CS_DIS  
VID0  
VOUT  
FB  
VID0  
VID1  
VID1  
PGND  
AGND  
COMP  
RGND  
Copyright 2020 Richtek Technology Corporation. All rights reserved.  
©
is a registered trademark of Richtek Technology Corporation.  
DS6543A/B-01 March 2020  
www.richtek.com  
1

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