Datasheet > RT6542A

RT6542A

更新时间： 2024-02-21 10:12:27

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
15页	261K
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技术参数
数据手册

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RT6542A 技术参数

Status：	Active	Vs (typ) (V)：	5
Vin (min) (V)：	3	Vin (max) (V)：	26
Vout (min) (V)：	0.75	Vout (max) (V)：	1.05
Preset Vout (V)：		Output Adj. Method：	Digital
Accuracy (+/- %)：	1	Freq (typ) (kHz)：	560
Freq (min) (kHz)：		Freq (max) (kHz)：
Iq (typ) (mA)：	0.2	Features：	ACOT Control;External Synchronization;Fast Transient Response;OCP;OVP;Power Good;Stable with Ceramic Capacitor;UVP
Package Type：	WDFN3x2-14

RT6542A 数据手册

RT6542A

High Efficiency Single Synchronous Buck PWM Controller

General Description

Features

^Intel Cannon VR Support

The RT6542A PWM controller provides high efficiency,

excellent transient response, and highDC output accuracy

needed for stepping down high voltage batteries to

generate low voltage CPU core, I/O, and chipset RAM

supplies in notebook computers.

^Built-in 1% Reference Voltage

^2-Bit Programmable Output Voltage with Integrated

Transition Support

^Support Intel LPM (Low-Power Mode) Feature

^4700ppm/°C Programmable Current Limit by Low-

Side R_DS(ON)Sensing

The RT6542A supports on chip voltage programming

function between 0.85V and 1.05V by controllingGX digital

inputs.

^3V to 26V Battery Input Range

^Internal Voltage Ramp Soft-Start Control

^Drives Large Synchronous Rectifier FETs

^Integrated Boost Switch

The constant-on-time PWM control scheme handles wide

input/output voltage ratios with ease and provides 100ns

“instant-on” response to load transients while maintaining

a relatively constant switching frequency.

^Over/Under-Voltage Protection

 Thermal Shutdown

 Power Good Indicator

The RT6542A achieves high efficiency at a reduced cost

by eliminating the current-sense resistor found in

traditional current-mode PWMs. Efficiency is further

enhanced by its ability to drive very large synchronous

rectifier MOSFETs and enter diode emulation mode at

light load condition. The buck conversion allows this device

to directly step down high voltage batteries at the highest

possible efficiency. The RT6542Ais intended for CPU core,

chipset, DRAM, or other low voltage supplies as low as

0.7V.

 RoHS Compliant and Halogen Free

 Tiny 14-Lead WDFN Package

Applications

 Notebook Computers

 CPU/GPU Core Supply

 Chipset/RAM Supply

 GenericDC-DC Power Regulator

The RT6542Ais available in a WDFN-14L 3x2 package.

Simplified Application Circuit

RT6542A

UGATE

VCC

BYPASS

BOOT

PGOOD

OUT

PHASE

LGATE

OUT

R5*

C2*

OUT

LPM

RGND

GND

MODE

is a registered trademark of Richtek Technology Corporation.

DS6542A-01 September 2019

www.richtek.com

12 3 4 5 6 7...15

中文翻译

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与RT6542A相关器件

型号	品牌	获取价格	描述	数据表
RT6543A	RICHTEK	获取价格	暂无描述
RT6543B	RICHTEK	获取价格	暂无描述
RT6545A	RICHTEK	获取价格	Dual-Channel Synchronous DC/DC Step-Down Controller with 5V/3.3V LDOs
RT6545AGQW	RICHTEK	获取价格	Dual-Channel Synchronous DC/DC Step-Down Controller with 5V/3.3V LDOs
RT6545BGQW	RICHTEK	获取价格	Dual-Channel Synchronous DC/DC Step-Down Controller with 5V/3.3V LDOs
RT6550A	RICHTEK	获取价格	暂无描述
RT6551A	RICHTEK	获取价格	Complete DDR Memory Power Supply Controller
RT6551B	RICHTEK	获取价格	暂无描述
RT6575A	RICHTEK	获取价格	暂无描述
RT6575B	RICHTEK	获取价格	暂无描述

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