Description:Supporting TCPC 1.2 Version
Low Voltage DRP (2V)
CC AMR = 24V, Meet IEC-61000-4-2 ESD
Protection
SBU AMR = 24V, Meet IEC-61000-4-2 ESD
Protection with OVP Switch Function
DP/DM USB2.0 Switch with 3dB BW of 800MHz &
High Voltage of 21V Protection and Meet
IEC-61000-4-2 ESD Protection
DP/DM Supports Charging Port Controller for
SINK and SRC Port (USB PD 3.0, BC1.2, Other
Proprietary Protocols)
Control External NMOS and PMOS for Power
Path
Power Path with VBUS OCP of SRC Mode
3-G
Richtek provides a recommended PCB layout in their application note AND9231, which includes guidelines for thermal vias, copper pours, and component placement to minimize thermal resistance and ensure reliable operation.
The input capacitor selection depends on the input voltage, output voltage, and output current. Richtek recommends using a low-ESR capacitor with a value between 4.7uF to 10uF, and a voltage rating of at least 1.5 times the maximum input voltage.
The maximum allowed voltage on the EN (enable) pin is 6V, as specified in the datasheet. Exceeding this voltage may damage the device.
The RT1718SGQW is rated for operation up to 125°C, but the device's performance and reliability may degrade at high temperatures. Richtek recommends derating the output current and voltage according to the thermal derating curve provided in the datasheet.
Richtek provides a troubleshooting guide in their application note AND9232, which covers common issues such as output voltage regulation, output current limiting, and thermal shutdown. The guide provides step-by-step procedures for identifying and resolving these issues.
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RT1718SGQW Overview
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