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RT9742JNGV is listed in the Power Distribution Switches, Load Drivers range at ChipApex. The manufacturer field lists Richtek USA Inc.. Its product description is IC PWR SWITCH N-CHAN 1:1 SOT23-3. Review the specifications below when checking this part for your BOM.
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.
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.
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.
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.
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.
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