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
42118
POSITIVE HIGH TEMPERATURE
FIXED VOLTAGE REGULATOR
Designed for use in high temperature environments
Mii
HYBRID MICROELECTRONICS
PRODUCTS DIVISION
Features:
Operating temperature +200
C
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 +200
C. 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 2
F should be installed at the input, as close to the case as possible.
ABSOLUTE MAXIMUM RATINGS AT 200C CASE TEMPERATURE
Output Current (I
OUT
) ............................................................................................................................................................1.0 A
Input Voltage (V
IN
) ........................................................................................................................................................ +38 VDC
Storage Temperature (T
STG
)............................................................................................................................................. +250C
Power Dissipation (Pd) ...........................................................................................................................................................8 W
Typical Connection Diagram
Note: D1 should be installed for input safety.
D1
INPUT
OUTPUT
+
COMMON
+
2uf
RECTIFIED
V
OUT
REGULATED
AS REQUESTED
V
IN
AS REQUESTED
HEADER
2
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
42118
POSITIVE HIGH TEMPERATURE, FIXED VOLTAGE REGULATOR
ELECTRICAL CHARACTERISTICS
PARAMETER
TEST CONDITIONS
TEMPERATURE
TYPICAL
*Output voltage
I
OUT
= 1.0 A
V
IN
= V
OUT
+3 VDC
+25C to +200C
V
OUT
1.0%
*Line regulation
V
IN
= (V
OUT
+3 VDC)
to +38
DC
I
OUT
= 50 mA
+25C to +200C
V
OUT
0.5%
Load regulation
V
IN
= V
OUT
+5 VDC
I
OUT
= 0.05 to 1.0 A
+25C to +200C
V
OUT
0.5% @ 25C
1.0% @ 200C
Ripple rejection at 120 Hz
V
IN
= V
OUT
+5 VDC
I
L
= 300 mA
+25C
-50 dB
Standby current
V
IN
= V
OUT
+5 VDC
I
OUT
= 0
+25C
30 mA
Short circuit current
V
IN
= V
OUT
+5 VDC
+25C
400 mA
Short circuit current
V
IN
= V
OUT
+5 VDC
+200C
200 mA
Foldback current (knee)
V
IN
= V
OUT
+5 VDC
+25C
2 A
Foldback current (knee)
V
IN
= V
OUT
+5 VDC
+200C
1.5 A
Noise output
V
IN
= V
OUT
+5 VDC
I
OUT
= 300 mA
+25C
2 mVRMS
Differential voltage
(
V= V
IN
V
OUT
)
I
OUT
= 300 mA
+25C to +200C
3 VDC MIN
*V
IN
= 10V Min
TABLE 1 (see note)
TYPE
V
OUT
(volts)
MAX I
OUT
(amps)
I
KNEE
TYP
(amps at
25
C)
42118-005
5
1.0
2.0
42118-012
12
1.0
2.0
42118-015
15
1.0
2.0
42118-018
18
1.0
2.0
42118-024
24
1.0
2.0
42118-030
30
1.0
2.0
NOTE: Under condition (V
IN
V
OUT)
x l
OUT
8 watts at 200C
Option: 1) Other output voltage available
2) MIL-STD-883 type screening available
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
42118
POSITIVE HIGH TEMPERATURE, FIXED VOLTAGE REGULATOR
Mechanical Configuration
All dimensions in inches
Pin
Function
1
V
OUT
2
Common
3
V
IN
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