LM195 Transistors Datasheet

LM195 Datasheet, PDF, Equivalent


Part Number

LM195

Description

Ultra Reliable Power Transistors

Manufacture

etcTI

Total Page 19 Pages
Datasheet
Download LM195 Datasheet


LM195
LM195, LM395
www.ti.com
SNOSBO4C – JUNE 1999 – REVISED APRIL 2013
LM195/LM395 Ultra Reliable Power Transistors
Check for Samples: LM195, LM395
FEATURES
1
2 Internal Thermal Limiting
• Greater than 1.0A Output Current
• 3.0 μA Typical Base Current
• 500 ns Switching Time
• 2.0V Saturation
• Base Can be Driven up to 40V without Damage
• Directly Interfaces with CMOS or TTL
• 100% Electrical Burn-in
For low-power applications (under 100 mA), refer to
the LP395 Ultra Reliable Power Transistor.
The LM195/LM395 are available in the standard TO-
3, Kovar TO-5, and TO-220 packages. The LM195 is
rated for operation from 55°C to +150°C and the
LM395 from 0°C to +125°C.
Simplified Circuit
DESCRIPTION
The LM195/LM395 are fast, monolithic power
integrated circuits with complete overload protection.
These devices, which act as high gain power
transistors, have included on the chip, current limiting,
power limiting, and thermal overload protection
making them virtually impossible to destroy from any
type of overload. In the standard TO-3 transistor
power package, the LM195 will deliver load currents
in excess of 1.0A and can switch 40V in 500 ns.
The inclusion of thermal limiting, a feature not easily
available in discrete designs, provides virtually
absolute protection against overload. Excessive
power dissipation or inadequate heat sinking causes
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.
Figure 1. 1.0 Amp Lamp Flasher
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.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1999–2013, Texas Instruments Incorporated

LM195
LM195, LM395
SNOSBO4C – JUNE 1999 – REVISED APRIL 2013
Connection Diagram
www.ti.com
Refer to RETS195H and RETS195K drawings of military LM195H and LM195K versions for specifications.
Figure 2. TO-3 Metal Can Package
Bottom View
See Package Number NDS0002A
Refer to RETS195H and RETS195K drawings of military LM195H and LM195K versions for specifications.
Figure 3. TO-5 Metal Can Package
Bottom View
Case is Emitter
Figure 4. TO-220 Plastic Package
Top View
See Package Number NDE0003B
2 Submit Documentation Feedback
Copyright © 1999–2013, Texas Instruments Incorporated
Product Folder Links: LM195 LM395


Features LM195, LM395 www.ti.com SNOSBO4C – J UNE 1999 – REVISED APRIL 2013 LM195/ LM395 Ultra Reliable Power Transistors Check for Samples: LM195, LM395 FEATUR ES 1 •2 Internal Thermal Limiting • Greater than 1.0A Output Current • 3 .0 μA Typical Base Current • 500 ns Switching Time • 2.0V Saturation • Base Can be Driven up to 40V without Da mage • Directly Interfaces with CMOS or TTL • 100% Electrical Burn-in For low-power applications (under 100 mA), refer to the LP395 Ultra Reliable Powe r Transistor. The LM195/LM395 are avail able in the standard TO3, Kovar TO-5, a nd TO-220 packages. The LM195 is rated for operation from −55°C to +150°C and the LM395 from 0°C to +125°C. Sim plified Circuit DESCRIPTION The LM195/ LM395 are fast, monolithic power integr ated circuits with complete overload pr otection. These devices, which act as h igh gain power transistors, have includ ed on the chip, current limiting, power limiting, and thermal overload protection making them virtually impossible to destroy fro.
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