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LM195 PDF даташит

Спецификация LM195 изготовлена ​​​​«National Semiconductor» и имеет функцию, называемую «Ultra Reliable Power Transistors».

Детали детали

Номер произв LM195
Описание Ultra Reliable Power Transistors
Производители National Semiconductor
логотип National Semiconductor логотип 

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LM195 Даташит, Описание, Даташиты
June 1999
LM195/LM395
Ultra Reliable Power Transistors
General Description
The LM195/LM395 are fast, monolithic power transistors
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 protec-
tion making them virtually impossible to destroy from any
type of overload. In the standard TO-3 transistor power pack-
age, 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 avail-
able in discrete designs, provides virtually absolute protec-
tion against overload. Excessive power dissipation or inad-
equate 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 de-
stroy the LM195 as with any power transistor. When the de-
vice is used as an emitter follower with low source imped-
ance, it is necessary to insert a 5.0k resistor in series with
the base lead to prevent possible emitter follower oscilla-
tions. Although the device is usually stable as an emitter fol-
lower, the resistor eliminates the possibility of trouble without
degrading performance. Finally, since it has good high fre-
quency response, supply bypassing is recommended.
For low-power applications (under 100 mA), refer to the
LP395 Ultra Reliable Power Transistor.
The LM195/LM395 are available in standard TO-3 power
packages and solid Kovar TO-5. The LM195 is rated for op-
eration from −55˚C to +150˚C and the LM395 from 0˚C to
+125˚C.
Features
n Internal thermal limiting
n Greater than 1.0A output current
n 3.0 µA typical base current
n 500 ns switching time
n 2.0V saturation
n Base can be driven up to 40V without damage
n Directly interfaces with CMOS or TTL
n 100% electrical burn-in
Simplified Circuit
© 1999 National Semiconductor Corporation DS006009
DS006009-1
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LM195 Даташит, Описание, Даташиты
Connection Diagrams
TO-3 Metal Can Package
TO-220 Plastic Package
DS006009-2
Bottom View
Order Number LM195K/883
See NS Package Number K02A
Case is Emitter
Top View
Order Number LM395T
See NS Package Number T03B
DS006009-3
TO-5 Metal Can Package
DS006009-4
Bottom View
Order Number LM195H/883
See NS Package Number H03B
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LM195 Даташит, Описание, Даташиты
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Collector to Emitter Voltage
LM195
LM395
Collector to Base Voltage
LM195
LM395
Base to Emitter Voltage (Forward)
LM195
LM395
42V
36V
42V
36V
42V
36V
Base to Emitter Voltage (Reverse)
Collector Current
Power Dissipation
Operating Temperature Range
LM195
LM395
Storage Temperature Range
Lead Temperature
(Soldering, 10 sec.)
20V
Internally Limited
Internally Limited
−55˚C to +150˚C
0˚C to +125˚C
−65˚C to +150˚C
260˚C
Preconditioning
100% Burn-In In Thermal Limit
Electrical Characteristics
(Note 2)
Parameter
Collector-Emitter Operating Voltage
(Note 4)
Base to Emitter Breakdown Voltage
Collector Current
TO-3, TO-220
TO-5
Saturation Voltage
Base Current
Quiescent Current (IQ)
Base to Emitter Voltage
Switching Time
Thermal Resistance Junction to
Case (Note 3)
Conditions
IQ IC IMAX
0 VCE VCEMAX
VCE 15V
VCE 7.0V
IC 1.0A, TA = 25˚C
0 IC IMAX
0 VCE VCEMAX
Vbe = 0
0 VCE VCEMAX
IC = 1.0A, TA = +25˚C
VCE = 36V, RL = 36,
TA = 25˚C
TO-3 Package (K)
TO-5 Package (H)
TO-220 Package (T)
LM195
Min Typ Max
42
LM395
Min Typ Max
36
Units
V
42
36 60
V
1.2 2.2
1.0 2.2
1.2 1.8
1.0 1.8
1.8 2.0
1.8 2.2
3.0 5.0
3.0 10
A
A
V
µA
2.0 5.0
0.9
500
2.3 3.0
12 15
2.0 10
mA
0.9 V
500 ns
2.3 3.0 ˚C/W
12 15 ˚C/W
4 6 ˚C/W
Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits.
Note 2: Unless otherwise specified, these specifications apply for −55˚C Tj +150˚C for the LM195 and 0˚C +125˚C for the LM395.
Note 3: Without a heat sink, the thermal resistance of the TO-5 package is about +150˚C/W, while that of the TO-3 package is +35˚C/W.
Note 4: Selected devices with higher breakdown available.
Note 5: Refer to RETS195H and RETS195K drawings of military LM195H and LM195K versions for specifications.
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