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New Japan Radio

NJM3548TA2 Datasheet Preview

NJM3548TA2 Datasheet

UNIVERSAL SOURCE DRIVER

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UNIVERSAL SOURCE DRIVER
NJM3548
s GENERAL DESCRIPTION
s PACKAGE OUTLINE
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 VCC.
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.
NJM3548TA2
s FEATURES
2000mA continuous-output current
• Short circuit to ground protection
• Error signal to host system
• Open circuit detection
• Short circuit to VCC detection
• Thermal protection
• Built-in protection diodes
• Package TO-220 (5-pin)
s BLOCK DIAGRAM
NJM3548
Input
To logic Voltage reference
Error
QS
R
Thermal
protection
Short-circuit to
GND protection
hShort-circuit to
Vcc detection
Open circuit
detection
Vcc
Output
GND
Figure 1. Block Diagram




New Japan Radio

NJM3548TA2 Datasheet Preview

NJM3548TA2 Datasheet

UNIVERSAL SOURCE DRIVER

No Preview Available !

s PIN CONFIGURATION
NJM3548
5
Output
4
Supply
3
GND
2
Input
1
Error
Figure 2. Pin Configuration
s PIN DESCRIPTION
TO-220
1
Symbol
Error
2
Input
3
GND
4
Supply
5
Output
Description
Error indicating pin. Sinks current to ground if the protection and/or detection circuitry is
activated.
Note: the current must be externally limited to 8 mA.
TTL compatible input. A HIGH input signal turns the output transistor off and a LOW
input turns it on. If the input is left open it will be detected as high level.
Ground supply.
Supply voltage. Nominally 5 V to 40 V.
Output pin. Current flows out from this pin through the load to GND. Nominal current is 8 mA
to 2 A.
Output Voltage
VCC
VCC - 0.5 V
VCC - 1.3 V
NJM3548
Active Output
Short Circuit to VCC Error
Undefined Area
Normal
Operation
VCC - 3.0 V
Undefined Area
VCC - 4.5 V
Overload or Short Circuit to GND Error
IOMin
(min 2 mA, max 8 mA)
I OS
(min 2 A, max 4.5 A)
Output
Current
NJM3548
Output Voltage Inactive Output
100% VCC
Short Circuit to VCC Error
50% VCC
30% VCC
Undefined Area
Normal Operation
Figure 3. Error state vs. output voltage and output current, active output
(0VVIN 0.8 V, 5 V < VCC < 40 V and -40°C <+TJ >+100°C)
Figure 4. Error state vs. output
voltage, inactive output (2.0 V VIN
VCC, 5 V VCC 40 V and -40°C
<TJ <+100°C)


Part Number NJM3548TA2
Description UNIVERSAL SOURCE DRIVER
Maker New Japan Radio
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