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42094
POSITIVE HIGH TEMPERATURE REGULATOR
Mii
HYBRID MICROELECTRONICS
PRODUCTS DIVISION
Features:
Output current to 1.5 amps
Input voltage to 38V
Internal short circuit protection, foldback and
current limiting
Storage Temperature 225°C
200°C Operating Temperature
Output voltage to 30 VDC
Applications:
Logging while drilling
Measuring while drilling (down-hole applications)
Other harsh environments
Designed to use in high temperature
environments 200°C
DESCRIPTION
The 42094 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 200°C case. These devices are complete with internal short circuit
protection which includes voltage shutdown and current foldback. The 42094 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 200°C
Output Current (IOUT) ............................................................................................................................................................. 1.5A
Input Voltage (VIN) ......................................................................................................................................................... +38VDC
Operating Temperature (TC)............................................................................................................................................... 200°C
Storage Temperature ..........................................................................................................................................–65°C to 200°C
Power Dissipation (Pd)...........................................................................................................................................................25W
TYPE
42094-005
42094-012
42094-015
42094-018
42094-024
42094-030
TABLE 1 (see note)
VOUT VDC
MAX IOUT A
5 1.5
12 1.5
15 1.5
18 1.5
24 1.5
30 1.5
TYP IKNEE A
2.0
2.0
2.0
2.0
2.0
2.0
NOTE: Under condition (VIN – VOUT) x lOUT 25 watts at 200°C case. 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
12/13/01
1

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ELECTRICAL CHARACTERISTICS
PARAMETER
*Output Voltage
*Line Regulation
Load Regulation
Ripple Rejection at 120 Hz
Standby Current
Short Circuit Current
Short Circuit Current
Foldback Current (knee)
Foldback Current (knee)
Noise Output
Differential Voltage
* ( V= VIN – VOUT )
* VIN = 10V Min
42094
POSITIVE HIGH TEMPERATURE REGULATOR
TEST CONDITIONS
IOUT = 300 mA
VIN = VOUT +3VDC
VIN = VOUT +3VDC
to VIN = 38 VDC
IOUT = 50 mA
VIN = VOUT +5VDC
IOUT = 50 to 300mA
VIN = VOUT +5VDC
VIN = VOUT +5VDC
IOUT = 0
VIN = VOUT +5VDC
VIN = VOUT +5VDC
VIN = VOUT +5VDC
VIN = VOUT +5VDC
VIN = VOUT +5VDC
IOUT = 300 mA
IOUT = 300 mA
TEMPERATURE
CASE TEMP
+25°C to +200°C
+25°C to +200°C
TYPICAL
VOUT ±1.0%
VOUT ±0.3%
+25°C to +200°C
+25°C
+25°C
+25°C
+200°C
+25°C
+200°C
+25°C
+25°C to +200°C
VOUT ±0.5%
-60db
30mA
400mA
200mA
2A
1.5A
2mVRMS
3VDC 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
12/13/01
2

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42094
POSITIVE HIGH TEMPERATURE REGULATOR
Mechanical Configuration
.550 MAX.
.83 MAX.
DIA.
.450 MAX.
.135 MAX.
.151
.161
DIA.
.039
.043
DIA.
1.177
1.197
.655
.657
2
1
.470
.440
.420
.440
.205
.225
Typical Connection Diagram
D1
RECTIFIED
INPUT
AS REQUESTED
V IN
++
2uF
HEADER
2
COMMON
V OUT
REGULATED
OUTPUT
+
AS REQUESTED
Note: D1 should be installed for input safety.
Electrical Conncetions
Case
Pin 1
VIN
Ground
Pin 2
VOUT
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
12/13/01
3