NJM3548
UNIVERSAL SOURCE DRIVER
s
GENERAL DESCRIPTION
NJM3548 is a bipolar universal high-current highly protected
high side driver with transparent input and 2000mA continuous
-current source capability. A low-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 V
CC
.
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.
Typical loads are solenoids, relays or resistive loads.
The NJM3548 and NJM3545 are complementary drivers and
have similar data.
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FEATURES
•
2000mA continuous-output current
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PACKAGE OUTLINE
NJM3548TA2
• Short circuit to ground protection
• Error signal to host system
• Open circuit detection
• Short circuit to V
CC
detection
• Thermal protection
• Built-in protection diodes
• Package
TO-220 (5-pin)
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BLOCK DIAGRAM
NJM3548
To logic
Input
Voltage reference
Vcc
Thermal
protection
Q S
R
Short-circuit to
GND protection
h
Output
Error
Short-circuit to
Vcc detection
Open circuit
detection
GND
Figure 1. Block Diagram
NJRC [ NEW JAPAN RADIO ]
