Datasheet > RT6575D

RT6575D

更新时间： 2024-02-14 06:13:13

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
22页	266K
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技术参数
数据手册

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RT6575D 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	Datasheet：	https://datasheet5.oss-cn-shanghai.aliyuncs.com/datasheets/richtek/DS6575CD-02.pdf

RT6575D 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

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