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Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement.
Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible.
MICROPAC INDUSTRIES, INC. HYBRID MICROELECTRONICS PRODUCTS DIVISION
905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281
www.micropac.com
E-MAIL:
hybridsales@micropac.com
12/14/01
1
42095
NEGATIVE HIGH TEMPERATURE REGULATOR
Mii
HYBRID MICROELECTRONICS
PRODUCTS DIVISION
Features:
Output current to 1.5 amps
Input voltage to -30V
Internal short circuit protection, foldback and
current limiting
Storage
Temperature
+250C
200C Operating temperature
Applications:
Logging
while
drilling
Measuring while drilling (down-hole applications)
Other harsh environments
Used as military and industrial devices
Designed for use in high temperature
environments
DESCRIPTION
The 42095 series of regulators covers the voltage range from -5 VDC through -30 VDC. These regulators are fabricated
using hybrid techniques and will operate at temperatures up to +200C case. These devices are complete with internal short
circuit protection which includes voltage shutdown and current foldback. The 42095 series regulators normally do not require
any additional components. However, for good design practice, an external filter cap should be installed at the input, as
close to the case as possible.
ABSOLUTE MAXIMUM RATINGS AT 200C Case temperature
Output Current (I
OUT
) .............................................................................................................................................................1.5A
Input Voltage (V
IN
) .......................................................................................................................................................... -38VDC
Operating Temperature (T
C
)............................................................................................................................................... 200C
Storage Temperature .........................................................................................................................................65C to 200C
Power Dissipation (P
d
)...........................................................................................................................................................25W
TABLE 1 (see note)
TYPE
V
OUT
VDC
MAX I
OUT
A
I
KNEE
TYP A
42095-005
-5
1.5
2.0
42095-012
-12
1.5
2.0
42095-015
-15
1.5
2.0
42095-018
-18
1.5
2.0
42095-024
-24
1.5
2.0
42095-030
-30
1.5
2.0
NOTE: Under condition (V
IN
V
OUT
x l
OUT)
25 watts at 200C. Micropac can provide custom output
voltages between -5VDC and -30VDC.
Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement.
Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible.
MICROPAC INDUSTRIES, INC. HYBRID MICROELECTRONICS PRODUCTS DIVISION
905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281
www.micropac.com
E-MAIL:
hybridsales@micropac.com
12/14/01
2
42095
NEGATIVE HIGH TEMPERATURE REGULATOR
ELECTRICAL CHARACTERISTICS
PARAMETER
TEST CONDITIONS
TEMPERATURE
CASE TEMP
TYPICAL
*Output Voltage
I
OUT
= 300 mA
V
IN
= V
OUT
+3VDC
+25C to +200C
V
OUT
1.0%
*Line Regulation
V
IN
= V
OUT
+3VDC
to V
IN
= 38 V
I
OUT
= 50 mA
+25C to +200C
V
OUT
0.3%
Load Regulation
V
IN
= V
OUT
+5VDC
I
OUT
= 50 to 300mA
+25C to +200C
V
OUT
0.5%
Ripple Rejection at 120 Hz
V
IN
= V
OUT
+5VDC
+25C
-60dB
Standby Current
V
IN
= V
OUT
+5VDC
I
OUT
= 0
+25C
30mA
Short Circuit Current
V
IN
= V
OUT
+5VDC
+25C
400mA
Short Circuit Current
V
IN
= V
OUT
+5VDC
+200C
200mA
Foldback Current (knee)
V
IN
= V
OUT
+5VDC
+25C
2A
Foldback Current (knee)
V
IN
= V
OUT
+5VDC
+200C
1.5A
Noise Output
V
IN
= V
OUT
+5VDC
I
OUT
= 300 mA
+25C
2mVRMS
Differential Voltage
* (
V= V
IN
V
OUT
)
I
OUT
= 300 mA
+25C to +200C
3 VDC MIN
*V
IN
= 10V Min
Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement.
Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible.
MICROPAC INDUSTRIES, INC. HYBRID MICROELECTRONICS PRODUCTS DIVISION
905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281
www.micropac.com
E-MAIL:
hybridsales@micropac.com
12/14/01
3
42095
NEGATIVE HIGH TEMPERATURE REGULATOR
Electrical Connection
Case
V
IN
Pin 1
Ground
Pin 2
V
OUT
.550 MAX.
.83 MAX.
DIA.
.450 MAX.
.135 MAX.
.470
.440
1.197
1.177
.655
.657
.440
.420
.225
.205
.151
.161
DIA.
.043
.039 DIA.
2
1
RECTIFIED
INPUT
OUTPUT
REGULATED
AS REQUESTED
AS REQUESTED
VOUT
VIN
D1
HEADER
COMMON
2
2uF
Mechanical Configuration
Typical Connection Diagram