Load driving device
AssigneeNEC Electronics Corporation
InventorAkihiro Nakahara
Life of this patent
Estimating the term…
Abstract
A load driving device according to an aspect of the present invention may includes an output transistor and a load connected in series between first and second power supply lines, a protection transistor connected between a gate of the output transistor and the second power supply line, the protection transistor turning on the output transistor when a polarity of a power supply connected between the first and second power supply lines is reversed, and a resistor arranged on a line, which supplies a voltage to a back gate of the protection transistor.
Claims12
A load driving device comprising:
- an output transistor and a load connected in series between first and second power supply lines;
- a protection transistor connected between a gate of the output transistor and the second power supply line, the protection transistor turning on the output transistor when a polarity of a power supply connected between the first and second power supply lines is reversed;
- and
- a resistor arranged on a line, which supplies a voltage to a back gate of the protection transistor.
A load driving device with elements formed on a semiconductor substrate of one conductivity type, comprising:
- an output transistor connected between a first power supply line and an output terminal, the output transistor driving a load connected between the output terminal and a second power supply line;
- a protection transistor connected between a gate of the output transistor and the second power supply line, the protection transistor turning on the output transistor when a polarity of a power supply connected between the first and second power supply lines is reversed;
- and
- a diffusion resistor arranged on a line, which supplies a voltage to a back gate of the protection transistor.
Dependencies are inferred from the claim text.