RT9701GB

Description：IC PWR SWITCH N-CHAN 1:1 SOT23-5
Series：-
Mfr：Richtek USA Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:a0808d2ed77e Category: Power Distribution Switches, Load Drivers Brand: Richtek USA Inc.

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Product introduction

Product Detailed Parameters

Description：IC PWR SWITCH N-CHAN 1:1 SOT23-5
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：2.2V ~ 6V
Voltage - Supply (Vcc/Vdd)：Not Required
Current - Output (Max)：1.1A
Rds On (Typ)：87mOhm
Input Type：Non-Inverting
Features：-
Fault Protection：Current Limiting (Fixed), Over Temperature
Operating Temperature：-20°C ~ 100°C (TJ)
Mounting Type：Surface Mount
Supplier Device Package：SOT-23-5
Package / Case：SC-74A, SOT-753
Grade：-
Qualification：-

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RT9701GB

Overview

The RT9701GB is a high-side power distribution switch designed for Universal Series Bus (USB) applications. It integrates an N-channel MOSFET driven by an internal charge pump to eliminate reverse current flow when powered off. The device features a typical on-resistance of 100mΩ and guarantees a continuous load current of 1.1A with a 1.5A current limit. It operates within a wide input voltage range of 2.2V to 6V and includes soft-start and thermal protection functions.

Feature Summary

Integrates a charge pump to drive the N-channel MOSFET, preventing parasitic body diode conduction and eliminating reverse current flow during power-off states.
Provides guaranteed continuous load current capability with integrated thermal protection and soft-start functionality for hot-plug-in applications.

Applications

Self-powered USB devices
Bus-powered USB peripherals
Portable battery-powered equipment

Procurement Notes

Verify the specific suffix 'GB' against the manufacturer's official datasheet to confirm pinout compatibility and package dimensions. Ensure the selected variant meets the required operating temperature range and current specifications for the target application before finalizing procurement.

Selection Notes

Select this component for USB applications requiring low quiescent current and compact footprint. The integrated charge pump ensures clean switching without reverse leakage. Consider the 1.1A continuous current rating and 100mΩ resistance when designing for efficiency and thermal management in space-constrained portable electronics.

Part Context

The RT9701 series belongs to Richtek's power distribution switch family, optimized for USB interfaces. These components are engineered to minimize board space while providing robust protection features like over-current and thermal shutdown, making them suitable for modern portable consumer electronics.

Replacement Considerations

RT9701BGB

FAQ

How does the RT9701GB prevent reverse current flow?

It utilizes an internal charge pump to drive the N-channel MOSFET gate, effectively removing the parasitic body diode that would otherwise allow reverse current when the switch is off.