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LM195QML Scheda tecnica(PDF) 1 Page - Texas Instruments

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Il numero della parte LM195QML
Spiegazioni elettronici  Ultra Reliable Power Transistors
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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LM195QML Scheda tecnica(HTML) 1 Page - Texas Instruments

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LM195QML, LM195QML-SP
www.ti.com
SNLS194A – NOVEMBER 2010 – REVISED MARCH 2013
LM195QML Ultra Reliable Power Transistors
1
FEATURES
DESCRIPTION
The LM195 is a fast, monolithic power integrated
2
Internal Thermal Limiting
circuit with complete overload protection. This device,
Greater Than 1.0A Output Current
which acts as a high gain power transistor, has
3.0
μA Typical Base Current
included on the chip, current limiting, power limiting,
and thermal overload protection making it virtually
500 ns Switching Time
impossible to destroy from any type of overload.
2.0V Saturation
The inclusion of thermal limiting, a feature not easily
Base Can be Driven up to 40V Without
available
in
discrete
designs,
provides
virtually
Damage
absolute
protection
against
overload.
Excessive
Directly Interfaces with CMOS or TTL
power dissipation or inadequate heat sinking causes
100% Electrical Burn-in
the thermal limiting circuitry to turn off the device
preventing excessive heating.
The LM195 offers a significant increase in reliability
as well as simplifying power circuitry. In some
applications, where protection is unusually difficult,
such as switching regulators, lamp or solenoid drivers
where normal power dissipation is low, the LM195 is
especially advantageous.
The LM195 is easy to use and only a few precautions
need be observed. Excessive collector to emitter
voltage can destroy the LM195 as with any power
transistor. When the device is used as an emitter
follower with low source impedance, it is necessary to
insert a 5.0k resistor in series with the base lead to
prevent
possible
emitter
follower
oscillations.
Although the device is usually stable as an emitter
follower, the resistor eliminates the possibility of
trouble without degrading performance. Finally, since
it
has
good
high
frequency
response,
supply
bypassing is recommended.
Connection Diagram
Figure 1. 5-Pin TO - Bottom View
See NDT0003A Package
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2010–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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