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RT7753GCS

更新时间： 2024-09-25 20:03:23
品牌 Logo 应用领域
立锜 - RICHTEK /
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RT7753GCS 技术参数

Status：ActiveFeedback Regulation Mode：SSR
Switching Frequency_Normal (kHz)：84Switching Frequency_Peak (kHz)：
Peak load Application：NoHV Start-up：No
CCM/Valley Multi-mode：YesProgrammable Burst/Green-mode：Yes
Brown-in/out：Yes (Buck cap.Side)OVP：Adaptive OVP
External OTP：YesUVLO ON (V)：14.5
UVLO OFF (V)：7VDD OVP (V)：46
Features：OCP;OVP;SCP;UVPPackage Type：SOT-26

RT7753GCS 数据手册

  
RT7753GCS  
PWM Controller for Programmable Power Converter (USBPD)  
General Description  
Features  
Optimized for Adaptive Output Power  
Wide VDD Range : 9V to 42V  
Adaptive Output Over-Voltage Protection  
Adaptive Over-Current Protection  
Adaptive Loop Gain Control for Loop Stability  
High Efficiency  
The RT7753GCS series is specifically designed to  
work with controllers, such as RT7202, to provide a  
total solution for the USB Power Delivery (USB PD) or  
a programmable power adapter. This RT7753GCS not  
only provides a control scheme of high power efficiency,  
but also gives a very low standby power control below  
50mW when under the 5V standby condition.  
Green Mode Operation at Light Load and No  
Load  
The RT7753GCS is such a special design to achieve a  
wide-range of output voltage by utilizing several  
innovations, including (1) By using the DMAG pin, the  
RT7753GCS senses the output voltage to adjust the  
loop gain for system stability, to adjust the threshold  
voltage of the output over-voltage protection, to protect  
external devices, and to adjust the current limit to meet  
Limited Power Source (LPS) safety requirements; (2)  
The RT7753GCS is also equipped with comprehensive  
protection features, including Bulk-Capacitor brown-in  
/brown-out protection, VDD over-voltage protection  
Comprehensive Protection Features  
Bulk-Capacitor Brown-In and Brown-Out  
Protection  
VDD Over-Voltage Protection  
Output Over-Voltage and Under-Voltage  
Protection  
External Over-Temperature Protection  
Secondary Rectifier Short-Circuit Protection  
Programmable Line Compensation  
Others  
(VDD OVP),  
output  
over-voltage/under-voltage  
protection (Output OVP/UVP), secondary rectifier  
short-circuit protection (SRSP), and external  
over-temperature protection (External OTP); (3) For  
constant output power regulation, a resistor connected  
to CS pin can be used to achieve an accurate line  
compensation across the universal input voltage range;  
and (4) The RT7753GCS also provides various  
features to protect against any failures occurring at the  
secondary-side component, such as the RT7202 or a  
shunt regulator.  
< 50mW in 5V Standby Mode for Power Saving  
Driver Capability : 300mA/300mA  
SmartJitterTM Technology  
Applications  
USB PD and Programmable Power Adapters  
In applications, the RT7753GCS is suggested to use  
with a secondary controller RT7202 to realize a robust  
and safe design so as to prevent all potential fault  
conditions due to misconnection of various devices,  
cables, plugs or receptacles.  
Simplified Application Circuit  
Option  
VBUS  
L
1
2
N
GND  
RT7202A  
VDD  
OPTO  
Option  
GND  
CS-  
VFB  
USBP  
CC1  
RT7753GCS  
GATE  
DMAG  
Option  
V2  
CC1  
VDD  
COMP  
GND  
Option  
4
CS  
3
Copyright © 2019 Richtek Technology Corporation. All rights reserved.  
is a registered trademark of Richtek Technology Corporation.  
DS7753GCS-00 May 2019  
www.richtek.com  
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