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RT9742MGJ5
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Product Detailed Parameters
- Description：IC PWR SWTCH N-CHAN 1:1 TSOT23-5
- Series：-
- Mfr：Richtek USA Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Switch Type：USB Switch
- Number of Outputs：1
- Ratio - Input:Output：1:01
- Output Configuration：High Side
- Output Type：N-Channel
- Interface：On/Off
- Voltage - Load：2.7V ~ 6V
- Voltage - Supply (Vcc/Vdd)：Not Required
- Current - Output (Max)：1.5A
- Rds On (Typ)：70mOhm
- Input Type：Non-Inverting
- Features：Load Discharge
- Fault Protection：Current Limiting (Fixed), Over Temperature, Reverse Current, UVLO
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：TSOT-23-5
- Package / Case：SOT-23-5 Thin, TSOT-23-5
- Grade：-
- Qualification：-
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Overview
The RT9742MGJ5 is a single-channel high-side power switch manufactured by Richtek USA Inc., designed for power distribution applications. It operates within a supply voltage range of 2.7V to 6V and features an N-channel output configuration housed in a TSOT-23-5 surface-mount package. The device supports an output current of 2A with a maximum on-resistance of 70mΩ. Key electrical parameters include a maximum operating temperature of +85°C and a minimum of -40°C, ensuring reliability across industrial and commercial environments.
Feature Summary
- Integrated status flag output for real-time monitoring of load conditions
- Comprehensive protection against overcurrent, thermal overload, reverse current, and under-voltage lockout
- Low on-resistance design to minimize conduction losses and heat generation
Applications
- USB port power switching and distribution
- Peripheral device power management in consumer electronics
- Battery-powered equipment load control
Procurement Notes
Verify the specific suffix 'MGJ5' against official Richtek documentation to confirm exact binning or tape-and-reel specifications. Ensure compatibility with standard SMD reflow profiles and check moisture sensitivity level ratings before assembly. Confirm RoHS compliance status through the manufacturer's declaration.
Selection Notes
Select this component when a single-channel high-side switch with integrated fault indication is required. The 2A current rating suits moderate-load applications where low on-resistance improves efficiency. Consider the TSOT-23-5 package size for space-constrained PCB layouts requiring surface-mount integration.
Part Context
The RT9742 series comprises cost-effective high-side power switches with various current ratings. This model belongs to the family offering integrated protection and status flags, distinguishing it from basic load switches without diagnostic outputs. It serves as a solution for reliable power distribution in compact electronic systems.
Replacement Considerations
Check for direct substitutes within the RT9742 series such as RT9742AGJ5 or RT9742VGJ5, which share similar pinouts but may differ in current ratings or resistance values. Verify functional equivalence before substitution.
