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RT9742CND-A
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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)：2A
- Rds On (Typ)：70mOhm
- Input Type：Non-Inverting
- Features：Status Flag
- 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 RT9742CND-A is a single-channel, low-voltage 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 2 A. The device operates within a supply voltage range of 2.7 V to 6 V and includes thermal shutdown protection. It is housed in a TSOT-23-5 surface-mount package and functions across a temperature range of -40°C to +85°C.
Feature Summary
- Integrates a single N-channel MOSFET for high-side power switching
- Provides low on-resistance for efficient power distribution
- Includes thermal shutdown protection for circuit safety
Applications
- USB port power distribution
- Portable device power management
- Battery-powered load switching
Procurement Notes
Verify the specific suffix (e.g., CND-A) against the manufacturer's official datasheet to confirm pinout, package type, and electrical ratings. Ensure compatibility with system voltage requirements and thermal constraints before integration. Cross-reference ordering information with authorized distributors to avoid counterfeit components.
Selection Notes
Select this component for applications requiring a compact, single-channel high-side switch with integrated protection. The 2 A current rating and 70 mOhm resistance suit low-power USB loads. Consider the TSOT-23-5 package for space-constrained PCB designs. Verify that the operating voltage range aligns with the system's power supply rails.
Part Context
The RT9742 series comprises cost-effective, low-voltage power switches optimized for portable electronics. The RT9742CND-A variant specifically offers 2 A capability in a small footprint. This family addresses the need for miniaturization and low power consumption in modern mobile and USB-connected devices.
Replacement Considerations
Check for exact pin-compatible substitutes within the RT9742 family or other manufacturers' single-channel high-side switches. Ensure replacement parts match the 2 A current rating, 70 mOhm max Rds(on), and TSOT-23-5 package dimensions.
