Datasheet > RT6575C

RT6575C

更新时间： 2024-09-24 16:37:07

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
22页	266K
描述
Dual-Channel Synchronous DC-DC Step-Down Controller with 5V/3.3V LDOs

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RT6575C 技术参数

Status：	Active	Vs (typ)(V)：	12
Vin (min)(V)：	5	Vin (max)(V)：	25
Vout (min)(V)：	2	Vout (max)(V)：	5.5
Preset Vout(V)：		Output Adj. Method：	Resistor
Accuracy(+/- %)：		Freq (typ)(kHz)：	240
Freq (min)(kHz)：	300	Freq (max)(kHz)：	360
Iq (typ)(mA)：	0.015	Features：	COT Control;Diode Emulation Mode;Fast Transient Response;OCP;OVP;PSM;Power Good;SCP;UVP
Package Type：	WQFN3x3-20

RT6575C 数据手册

RT6575C/D

Dual-Channel Synchronous DC/DC Step-Down Controller

with 5V/3.3V LDOs

Features

General Description

^Support Connected Standby Mode for Ultrabook

^CCRCOT Control with 100ns Load Step Response

^PWM Maximum Duty Ratio > 98%

^5V to 25V Input Voltage Range

^Dual Adjustable Output :

The RT6575C/D is a dual-channel step-down controller

generating supply voltages for battery-powered systems.

It includes two Pulse-Width Modulation (PWM) controllers

adjustable from 2V to 5.5V, and two fixed 5V/3.3V linear

regulators. Each linear regulator provides up to 100mA

output current and 3.3V linear regulator provides 1%

accuracy under 35mA. The RT6575C/D has an oscillator

output to drive the external charge pump application. Other

features include on-board power-up sequencing, a power-

good output, internal soft-start, and soft-discharge output

that prevents negative voltage during shutdown.

 CH1 : 2V to 5.5V

 CH2 : 2V to 4V

^5V/3.3V LDOs with 100mA Output Current

^1% Accuracy on 3.3V LDO Output

^Oscillator Driving Output for Charge Pump

Application

 Support Audio-Skipping Mode (ASM)

 Internal Frequency Setting

A constant current ripple PWM control scheme operates

without sense resistors and provides 100ns response to

load transient. For maximizing power efficiency, the

RT6575C/D automatically switches to the diode-emulation

mode in light load applications. To eliminate noise in audio

applications, an audio-skipping mode is included, which

maintains the switching frequency above 25kHz. The

RT6575C/Dis available in the WQFN-20L 3x3 package.

^300kHz/355kHz (CH1/CH2)

 Internal Soft-Start and Soft-Discharge

 4700ppm/°C R_DS(ON)Current Sensing

 Independent Switcher Enable Control

 Built-in OVP/UVP/OCP/OTP

 Non-Latch UVLO

 Power Good Indicator

Simplified Application Circuit

UGATE2

VIN

RT6575C/D

BOOT2

UGATE1

BOOT1

PHASE2

LGATE2

OUT2

OUT1

PHASE1

LGATE1

FB2

CS1

CS2

BYP1

FB1

LDO5

Channel 1 Enable

Channel 2 Enable

EN1

PGOOD

LDO3

ator

PGOOD Indic

EN2

3.3V

VCLK

GND

is a registered trademark of Richtek Technology Corporation.

DS6575C/D-02 February 2016

www.richtek.com

12 3 4 5 6 7...22

中文翻译

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与RT6575C相关器件

型号	品牌	获取价格	描述	数据表
RT6575D	RICHTEK	获取价格	暂无描述
RT6575E	RICHTEK	获取价格	暂无描述
RT6575K	RICHTEK	获取价格	High Efficiency Single Synchronous DC-DC Step-Down Controller with 5V LDO
RT6576A	RICHTEK	获取价格	暂无描述
RT6576B	RICHTEK	获取价格	暂无描述
RT6576C	RICHTEK	获取价格	暂无描述
RT6576D	RICHTEK	获取价格	暂无描述
RT6576E	RICHTEK	获取价格	暂无描述
RT6576F	RICHTEK	获取价格	暂无描述
RT6585A	RICHTEK	获取价格	Dual-Channel Synchronous DC/DC Step-Down Controller with 5V/3.3V LDOs

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