| Parameters | 
                                
                                                                                                            
                                            | Factory Lead Time | 
                                            18 Weeks | 
                                        
                                                                            
                                            | Mounting Type | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Package / Case | 
                                            SOT-23-5 Thin, TSOT-23-5 | 
                                        
                                                                            
                                            | Surface Mount | 
                                            YES | 
                                        
                                                                            
                                            | Operating Temperature | 
                                            -40°C~85°C TA | 
                                        
                                                                            
                                            | Packaging | 
                                            Cut Tape (CT) | 
                                        
                                                                            
                                            | Published | 
                                            2016 | 
                                        
                                                                            
                                            | Feature | 
                                            Load Discharge, Status Flag | 
                                        
                                                                            
                                            | Pbfree Code | 
                                            yes | 
                                        
                                                                            
                                            | Part Status | 
                                            Discontinued | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            3  (168 Hours) | 
                                        
                                                                            
                                            | Number of Terminations | 
                                            5 | 
                                        
                                                                            
                                            | Terminal Position | 
                                            DUAL | 
                                        
                                                                            
                                            | Terminal Form | 
                                            GULL WING | 
                                        
                                                                            
                                            | Peak Reflow Temperature (Cel) | 
                                            NOT SPECIFIED | 
                                        
                                                                            
                                            | Number of Functions | 
                                            1 | 
                                        
                                                                            
                                            | Supply Voltage | 
                                            5V | 
                                        
                                                                            
                                            | Terminal Pitch | 
                                            0.939mm | 
                                        
                                                                            
                                            | Time@Peak Reflow Temperature-Max (s) | 
                                            NOT SPECIFIED | 
                                        
                                                                            
                                            | JESD-30 Code | 
                                            R-PDSO-G5 | 
                                        
                                                                            
                                            | Number of Outputs | 
                                            1 | 
                                        
                                                                            
                                            | Output Type | 
                                            N-Channel | 
                                        
                                                                            
                                            | Max Output Current | 
                                            1A | 
                                        
                                                                            
                                            | Supply Voltage-Max (Vsup) | 
                                            6V | 
                                        
                                                                            
                                            | Supply Voltage-Min (Vsup) | 
                                            2.7V | 
                                        
                                                                            
                                            | Interface | 
                                            On/Off | 
                                        
                                                                            
                                            | Output Configuration | 
                                            High Side | 
                                        
                                                                            
                                            | Voltage - Supply (Vcc/Vdd) | 
                                            Not Required | 
                                        
                                                                            
                                            | Input Type | 
                                            Non-Inverting | 
                                        
                                                                            
                                            | Switch Type | 
                                            USB Switch | 
                                        
                                                                            
                                            | Ratio - Input:Output | 
                                            1:1 | 
                                        
                                                                            
                                            | Voltage - Load | 
                                            2.7V~6V | 
                                        
                                                                            
                                            | Fault Protection | 
                                            Current Limiting (Fixed), Over Temperature, Reverse Current, UVLO | 
                                        
                                                                            
                                            | Output Peak Current Limit-Nom | 
                                            1.1A | 
                                        
                                                                            
                                            | Rds On (Typ) | 
                                            70m Ω | 
                                        
                                                                            
                                            | Built-in Protections | 
                                            OVER CURRENT; THERMAL; UNDER VOLTAGE | 
                                        
                                                                            
                                            | Output Current Flow Direction | 
                                            SINK | 
                                        
                                                                            
                                            | Length | 
                                            2.8955mm | 
                                        
                                                                            
                                            | RoHS Status | 
                                            ROHS3 Compliant | 
                                        
                                                                                                    
                            
                         
                                                RT9742HGJ5 Overview
As you can see, it's packaged in the way of a Cut Tape (CT).In the SOT-23-5 Thin, TSOT-23-5 package, it is included.The lighting driver has the mounting type Surface Mount.A USB Switch switch type is owned by it.It is best to set the temperature to -40°C~85°C TA to ensure reliable operation.The LED driver is equipped with 1 outputs.The LED driving board is powered by a voltage of Not Required.There is a maximum output voltage of N-Channel volts.Currently, the LED driving board is equipped with Load Discharge, Status Flag features.There are 5 terminations in it.As far as functions are concerned, the lighting driver has 1.The maximum output current is reduced to 1A to meet the operation criteria.It is possible to achieve a high level of efficiency with a supply voltage of 5V.The maximum supply voltage for this LED driver is 6V (Vsup).Normal operation requires Vsup above 2.7V.
RT9742HGJ5 Features
Supplied from 5V
RT9742HGJ5 Applications
There are a lot of Richtek USA Inc. RT9742HGJ5 Power Switches ICs applications. 
- Solid-State Drives
 - Portable Music Players
 - Portable Devices
 - Smartphone and PDA
 - PC Card Hot Swap
 - Wearable Devices
 - Low Voltage I/O System Power
 - Portable GPS
 - Storage Drives
 - Handheld Devices