Datasheet > RT7740GHD

RT7740GHD

更新时间： 2024-09-22 15:50:03

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
1页	80K
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RT7740GHD 技术参数

Status：	Active	Feedback Regulation Mode：	SSR
Switching Frequency_Normal (kHz)：	100	Switching Frequency_Peak (kHz)：	NA
Peak load Application：	No	HV Start-up：	No
CCM/Valley Multi-mode：	Yes	Programmable Burst/Green-mode：	No
Brown-in/out：	Yes (Buck cap.Side)	OVP：	OVP
External OTP：	Yes	UVLO ON (V)：	16.5
UVLO OFF (V)：	7	VDD OVP (V)：	28
Features：	Current Mode Control;Cycle-by-Cycle Current Limit;OCP;OVP;SCP;UVP	Package Type：	SOT-26

RT7740GHD 数据手册

RT7740GAD/GHD

SmartJitter^TMMulti-Mode Flyback Controller

General Description

Features

^Proprietary SmartJitter^TMTechnology

^Reducing EMI Emissions of SMPS

^Eliminating Frequency-Jittering-Induced Output

Ripple

The RT7740GAD/GHD is an enhanced high-efficiency

multi-mode PWM flyback controller, incorporating

Richtek's proprietary SmartJitter^TMtechnology. The

innovative SmartJitter^TMtechnology is used to reduce EMI

emissions of a switch-mode power supply in green mode,

and at the same time eliminate the output ripple due to

frequency jittering. In operation, the RT7740GAD/GHD

features a multi-mode control scheme, operating from the

continuous-conduction mode (CCM) to the discontinuous-

conduction mode (DCM) with valley switching, to achieve

high efficiency and the optimal performance with high

efficiency.

^Operating in Continuous-Conduction Mode (CCM),

Discontinuous-Conduction Mode (DCM), DCM with

Valley-Switching

^Ultra-low Start-Up Current (< 3μA)

^Accurate Over-Current Protection (OCP)

^Programmable Line Compensation

^Programmable Output Over-Voltage Protection

^Programmable External Over-Temperature Protection

 Programmable Bulk-Capacitor Brown-In/Brown-Out

Protection

The RT7740GAD/GHDoperates as a current-mode PWM

controller for flyback converters. It contains

comprehensive and programmable protection features,

consisting of propagation delay compensation, output

over-voltage protection (OVP), external over-temperature

protection (OTP), and bulk-capacitor brown-in/brown-out

protection. With above features, the RT7740GAD/GHD

enables one to achieve a cost-effective and compact design

for a wide-range AC-DC conversion applications. It is

available in an SOT-23-6 package.

 Driver Capability : 200mA/−300mA

 High Noise Immunity

Applications

 SwitchingAC-DCAdapter

 NBAdapter

 TV/Monitor Standby Power

 PC Peripherals

Simplified Application Circuit

O+

Mains

(90V to 265V)

O-

(Option)

VDD

DMAG

COMP

GATE

RT7740GAD/GHD

GND

COMP

is a registered trademark of Richtek Technology Corporation.

DS7740GAD_GHD-01 November 2019

www.richtek.com

中文翻译

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与RT7740GHD相关器件

型号	品牌	获取价格	描述	数据表
RT7740MAH	RICHTEK	获取价格	SmartJitterTM Multi-Mode Flyback Controller?
RT7752AC	RICHTEK	获取价格	暂无描述
RT7752GAH	RICHTEK	获取价格	暂无描述
RT7752GAQ	RICHTEK	获取价格	暂无描述
RT7752GC	RICHTEK	获取价格	暂无描述
RT7752GCF	RICHTEK	获取价格	暂无描述
RT7752GCH	RICHTEK	获取价格	暂无描述
RT7752GCN	RICHTEK	获取价格	暂无描述
RT7752GE	RICHTEK	获取价格	暂无描述
RT7752GEN	RICHTEK	获取价格	暂无描述

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