ROHM QS5U34 User Guide

Summary

Rohm QS5U34 transistor datasheet featuring a 1.8V drive N-channel MOSFET with integrated Schottky barrier diode in TSMT5 package. The document provides absolute maximum ratings, electrical characteristics, package dimensions, and application notes for load switching and DC-DC conversion. Target users are power electronics engineers designing low-voltage switching circuits and portable device power management systems.

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QS5U34

Transistors

1.8V Drive Nch+SBD MOSFET QS5U34

Structure Dimensions (Unit : mm)

Silicon N-channel MOSFET

TSMT5

Schottky Barrier DIODE

1.0MAX

Features 1) The QS5U34 combines Nch MOSFET with a 0~0.1

Schottky barrier diode in a single TSMT5 package.

2) Low on-state resistance with fast switching. 0.4 0.16

3) Low voltage drive (1.8V).

Each lead has same dimensions

4) The Independently connected Schottky barrier diode Abbreviated symbol : U34 has low forward voltage.

Applications Load switch, DC / DC conversion

Packaging specifications Equivalent circuit

Package Taping

Type Code TR

Basic ordering unit (pieces)

QS5U34

∗1 (1)Gate

(2)Source (1) (2) (3) (3)Anode ∗1 ESD protection diode (4)Cathode ∗2 Body diode (5)Drain

Page Summary Contents For ROHM QS5U34 User Guide

Page 1 QS5U34 Transistors 1.8V Drive Nch+SBD MOSFET QS5U34 Structure Dimensions (Unit : mm) Silicon N-channel MOSFET TSMT5 Schottky Barrier DIODE 1.0MAX Features 1) The QS5U34 combines Nch MOSFET with a 0~0....

Page 2 QS5U34 Transistors Absolute maximum ratings (Ta=25°C) <MOSFET> Parameter Symbol Limits Unit Drain-source voltage VVDSS Gate-source voltage VVGSS Continuous ±1.5 AID Drain current Pulsed ±3.0 AID...

Page 3 IN ID QS5U34 IC IN -S IT p F Transistors -S IS on ) ( Electrical characteristic curves <MOSFET> Ta=25°C Ta=25°C Ta=25°C f=1MHz VDD=10V VDD=10V VGS=0V VGS=4.5V ID=1.5A RG=10Ω RG=10Ω Pulsed Pulsed...

Page 4 QS5U34 or ar ur re nt IF [m Transistors Ta=125 C 75 C 125°C 25 C −25 C 0.1 0.0001 ev er se ur re nt IR [m Forward Voltage :VF [V] Reverse Voltage : VR[V] Fig.10 Forward Temperature Characteristics Fig...

Page 5 Appendix Notes No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject...

Manual Details

Brand	ROHM
Pages	5
File Size	85.68 KB
Published	June 16, 2026

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Frequently Asked Questions

What is the maximum continuous drain current for the QS5U34?

The maximum continuous drain current is ±1.5 A.

What is the recommended application for the QS5U34?

It is designed for load switch and DC/DC conversion applications.

What is the typical on-state resistance at 1.8V gate drive?

The typical on-state resistance is 220 mΩ at ID=0.8A and VGS=1.8V.

What is the absolute maximum gate-source voltage?

The absolute maximum gate-source voltage is 10 V.