Collector to Emitter Voltage

36V

Collector to Base Voltage

36V

Base to Emitter Voltage (Forward)

36V

Base to Emitter Voltage (Reverse)

10V

Base to Emitter Current (Reverse)

20 mA

Collector Current Limit

Internally Limited

Power Dissipation

Internally Limited

Operating Temperature Range

−40˚C to +125˚C

Storage Temperature Range

−65˚C to +150˚C

Lead Temp. (Soldering, 10 seconds)

260˚C

Electrical Characteristics

Tested

Design

Units

Symbol

Parameter

Conditions

Typical

Limit

Limit

(Limit)

(Note 3)

(Note 4)

V

CE

Collector to Emitter

0.5 mA

≤ I

36

36

V(Max)

Operating Voltage

(Note 2)

I

CL

Collector Current Limit

V

45

25

20

mA(Min)

(Note 5)

V

90

60

50

mA(Min)

V

130

100

100

mA(Min)

I

B

Base Current

0

≤ I

−0.3

−2.0

−2.5

µA(Max)

I

Q

Quiescent Current

V

0.24

0.50

0.60

mA(Max)

V

CE(SAT)

Saturation Voltage

V

1.82

2.00

2.10

V(Max)

BV

BE

Base to Emitter Break-

0

≤ V

36

36

V(Min)

down Voltage (Note 5)

V

BE

Base to Emitter Voltage

I

0.69

0.79

0.90

V(Max)

(Note 6)

I

1.02

1.40

V (Max)

t

S

Switching Time

V

2µs

V

θ

JA

Thermal Resistance

0.4" leads soldered to

150

180

˚C/W

Junction to Ambient

printed circuit board

(Max)

0.125" leads soldered to

130

160

˚C/W

printed circuit board

(Max)

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is func-

tional, but do not guarantee specific performance limits.

Note 2: Parameters identified with boldface type apply at temp. extremes. All other numbers, unless noted apply at +25˚C.

Note 3: Guaranteed and 100% production tested.

Note 4: Guaranteed (but not 100% production tested) over the operating temperature and supply voltage ranges. These limits are not used to calculate outgoing

quality levels.

Note 5: These numbers apply for pulse testing with a low duty cycle.

Note 6: Base positive with respect to emitter.

Simplified Circuit

Applications Information

One failure mode incandescent lamps may experience is

one in which the filament resistance drops to a very low

value before it actually blows out. This is especially rough on

most solid-state lamp drivers and in most cases a lamp fail-

ure of this type will also cause the lamp driver to fail. Be-

cause of its high gain and blowout-proof design, the LP395 is

an ideal candidate for reliably driving small incandescent

lamps. Additionally, the current limiting characteristics of the

LP395 are advantageous as it serves to limit the cold fila-

ment inrush current, thus increasing lamp life.

DS005525-5

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