
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. MICROCIRCUITS PRODUCTS DIVISION
905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281
www.micropac.com
E-MAIL: microsales@micropac.com
1/6/06 Rev C
Pg. 1 of
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42094
POSITIVE HIGH TEMPERATURE REGULATOR
Mii
Features:
Output current to 1.5 amps
Input voltage to 38V
Output voltage to 30V
Internal short circuit protection, foldback and
current limiting
Storage Temperature 225°C
200°C Operating temperature
Applications:
Logging while drilling
Measuring while drilling (down-hole applications)
Other harsh environments
Designed for 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. It is strongly recommended that input capacitors be added
as close to the case as possible. A 2f capacitor should be added to the input and a minimum of 1.5 f capacitor should be
added to the output. See typical connection diagram.
ABSOLUTE MAXIMUM RATINGS AT 200°C Case temperature
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
TABLE 1 (see note)
TYPE
VOUT VDC
MAX IOUT A
IKNEE TYP A
42094-005
5
1.5
2.0
42094-012
12
1.5
2.0
42094-015
15
1.5
2.0
42094-018
18
1.5
2.0
42094-024
24
1.5
2.0
42094-030
30
1.5
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
MICROCIRCUITS PRODUCTS
DIVISION