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RT9742JNGV
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Product Detailed Parameters
- Description：IC PWR SWITCH N-CHAN 1:1 SOT23-3
- 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)：1.8A
- Rds On (Typ)：70mOhm
- Input Type：Non-Inverting
- Features：-
- Fault Protection：Current Limiting (Fixed), Over Temperature, Reverse Current, UVLO
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：SOT-23-3
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Grade：-
- Qualification：-
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Overview
The RT9742JNGV is a single N-MOSFET high-side power switch IC designed for USB applications. It features a maximum on-resistance of 70 mOhms and supports an output current of 1 A with a corresponding current limit of 1 A. The device operates within a supply voltage range of 2.7 V to 6 V and has a maximum run time of 2.1 ms. It functions in temperatures from -40°C to +85°C and is housed in a TSOT-23-5 package.
Feature Summary
- Single-channel high-side power switching capability
- Low on-resistance for efficient power distribution
- Integrated current limiting protection
Applications
- USB power distribution circuits
- Portable electronic device power management
- Battery-powered equipment load switching
Procurement Notes
Verify the specific suffix JNGV against the manufacturer datasheet to confirm pinout and electrical characteristics match the design requirements. Ensure the TSOT-23-5 package footprint aligns with the PCB layout. Confirm RoHS compliance status through official documentation before finalizing procurement specifications.
Selection Notes
Select this component when a single-channel high-side switch with 1 A capacity is required. The 70 mOhm resistance suits low-loss applications. Verify that the 2.7 V to 6 V operating range covers the system's supply voltage. The TSOT-23-5 package is suitable for space-constrained designs requiring surface mount technology.
Part Context
The RT9742 series comprises cost-effective, low-voltage power switches optimized for USB interfaces. The RT9742JNGV variant specifically provides 1 A output capability within the family, which includes options for higher currents like 3 A or lower currents like 500 mA depending on the suffix. This model targets portable electronics needing reliable load switching.
Replacement Considerations
Check for exact suffix matches such as RT9742GGJ5 for 1 A variants in different packages. Substitutes must maintain the 70 mOhm max resistance and 1 A current limit. Verify package compatibility between TSOT-23-5 and potential alternatives like SOT-23-3 if pinouts differ.
