Datasheet > RT7738H

RT7738H

更新时间： 2024-02-28 09:50:05

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
1页	158K
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RT7738H 技术参数

Status：	Active	Feedback Regulation Mode：	SSR
Switching Frequency_Normal (kHz)：	100	Switching Frequency_Peak (kHz)：
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)：	14.5
UVLO OFF (V)：	9	VDD OVP (V)：	27.0
Features：	Current Mode Control;Cycle-by-Cycle Current Limit;OCP;OVP;SCP;UVP	Package Type：	SOT-26

RT7738H 数据手册

RT7738

SmartJitter^TMMulti-Mode Flyback Controller

General Description

Features

 Proprietary SmartJitter^TMTechnology

 Reducing EMI Emissions of SMPS

The RT7738 series are enhanced high efficient

multi-mode PWM flyback controller with proprietary

SmartJitter^TMtechnology. The innovative SmartJitter^TM

technology can not only reduces the EMI emissions of

SMPS when the system enters green mode, but also

eliminates the output jittering ripple. Also, the RT7738

series feature Continuous Conduction Mode (CCM)

and valley switching multi-mode control to optimize the

product performance. To meet the stringent trend

toward performance in recent years, the RT7738 series

are the best choice for product designers.

 Output Jittering Ripple Elimination

 Continuous Conduction Mode (CCM) and Valley

Switching Mode Control

 Ultra-low Start-up current (<3A)

 Accurate Over-Load Protection (OLP)

 Programmable Propagation Delay Time

Compensation

 Programmable Output Over-Voltage Protection

 Programmable External Over-Temperature

Protection

 Programmable Bulk Capacitor Brown-in/Brown-out

Protection

The RT7738 is available in SOT-23-6 package, and it is a

current mode PWM controller. Comprehensive protection

and programmable functions are built-in, including a

programmable propagation delay time compensation, a

programmable output Over-Voltage Protection (OVP), a

programmable external Over-Temperature Protection

(OTP), and a programmable bulk capacitor Brown-in/

Brown-out protection. With the above features, the

RT7738 is a cost-effective and compact solution for

AC-DC products.

 Driver Capability : 200mA/300mA

 High Noise Immunity

Applications

 Switching AC-DC Adaptor

 NB Adaptor

 TV/Monitor Standby Power

 PC Peripherals

Simplified Application Circuit

O+

Mains

(90V to 265V)

O-

(Optional)

VDD

DMAG

COMP

GATE

(Optional)

RT7738

COMP

GND

is a registered trademark of Richtek Technology Corporation.

DS7738-01 March 2017

www.richtek.com

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