NJM3545

UNIVERSAL SINK DRIVER

s GENERAL DESCRIPTION

s PACKAGE OUTLINE

NJM3545 is a bipolar universal high-current highly protected

low side driver with transparent input and 2000mA continuous

-current sink capability. A high-level input activates the output.

The driver is equipped with extensive electrical protection;

such as over current protection and thermal protection,

which makes the device virtually indestructible.

Furthermore it can detect open circuit and short circuit to ground.

A special feature is the Error indicating output function pin

which signals to the host system if the protection or the load

check functions is activated.

The NJM3545 and NJM3548 are complementary drivers and

have similar data.

s FEATURES

• 2000mA continuous-output current

• Error signal to host system

• Open circuit detection

• Short circuit to ground detection

• Thermal protection

• Built-in protection diodes

• Package

TO-220 (5-pin)

s BLOCK DIAGRAM

Figure 1. Block Diagram

NJM3545TA2

Output

Thermal

protection

Short-circuit to

V

protection

Open circuit

detection

Q

R

S

Voltage reference

To logic

NJM3545

Input

Error

GND

Supply

cc

Short-circuit to

GND detection