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42118
POSITIVE HIGH TEMPERATURE
FIXED VOLTAGE REGULATOR
Designed for use in high temperature environments
Mii
HYBRID MICROELECTRONICS
PRODUCTS DIVISION
Features:
Operating temperature +200ºC
Output current to 1.0 A
Input voltage to +30 V
Internal short circuit protection, foldback and
current limiting
Isolated TO-258 package
Applications:
Military and Hi Rel Industrial harsh environment
applications where hermetically sealed product is
required
Down hole applications
DESCRIPTION
The 42118 series of fixed voltage regulators covers the output voltage range from +5 VDC through +30 VDC. These voltage
regulators are fabricated using hybrid techniques and will operate at temperatures up to +200ºC. These devices are
complete with internal short circuit protection, which includes voltage shutdown and current foldback. The 42118 series
voltage regulators normally do not require any additional components. However, for good design practice, an external filter
cap of 2µF should be installed at the input, as close to the case as possible.
ABSOLUTE MAXIMUM RATINGS AT 200°C CASE TEMPERATURE
Output Current (IOUT) ............................................................................................................................................................ 1.0 A
Input Voltage (VIN) ........................................................................................................................................................ +38 VDC
Storage Temperature (TSTG)............................................................................................................................................. +250°C
Power Dissipation (Pd) ........................................................................................................................................................... 8 W
Typical Connection Diagram
RECTIFIED
INPUT
VIN
AS REQUESTED
+
2uf
D1
HEADER
2
COMMON
VOUT
+
REGULATED
OUTPUT
AS REQUESTED
Note: D1 should be installed for input safety.
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 08/03/01

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42118
POSITIVE HIGH TEMPERATURE, FIXED VOLTAGE REGULATOR
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
TEST CONDITIONS
IOUT = 1.0 A
VIN = VOUT +3 VDC
VIN = (VOUT +3 VDC)
to +38 DC
IOUT = 50 mA
VIN = VOUT +5 VDC
IOUT = 0.05 to 1.0 A
VIN = VOUT +5 VDC
IL= 300 mA
VIN = VOUT +5 VDC
IOUT = 0
VIN = VOUT +5 VDC
VIN = VOUT +5 VDC
VIN = VOUT +5 VDC
VIN = VOUT +5 VDC
VIN = VOUT +5 VDC
IOUT = 300 mA
IOUT = 300 mA
TEMPERATURE
+25°C to +200°C
+25°C to +200°C
+25°C to +200°C
+25°C
+25°C
+25°C
+200°C
+25°C
+200°C
+25°C
+25°C to +200°C
TYPICAL
VOUT ±1.0%
VOUT ±0.5%
VOUT ±0.5% @ 25ºC
± 1.0% @ 200ºC
-50 dB
30 mA
400 mA
200 mA
2A
1.5 A
2 mVRMS
3 VDC MIN
TYPE
TABLE 1 (see note)
VOUT (volts)
MAX IOUT (amps)
42118-005
5 1.0
42118-012
12 1.0
42118-015
15 1.0
42118-018
18 1.0
42118-024
24 1.0
42118-030
30 1.0
NOTE: Under condition (VIN – VOUT) x lOUT 8 watts at 200°C
Option: 1) Other output voltage available
2) MIL-STD-883 type screening available
IKNEE TYP
(amps at
25°C)
2.0
2.0
2.0
2.0
2.0
2.0
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 08/03/01

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42118
POSITIVE HIGH TEMPERATURE, FIXED VOLTAGE REGULATOR
Mechanical Configuration
All dimensions in inches
Pin Function
1 VOUT
2 Common
3 VIN
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 08/03/01