Preliminary
HTMOS
TM
High Temperature Products
HIGH TEMPERATURE POSITIVE
LINEAR REGULATOR
HTPLREG
Down-Hole Well
Avionics
Turbine Engine Control
Industrial Process Control
Nuclear Reactor
Electric Power Conversion
Heavy Duty Internal Combustion Engines
Specified Over -55 to +225
C
Output Current up to 300 mA
Calibrated +15, +10, and +5V Output
Input Voltage up to 28V
2.0 mA Quiescent Current
Current Limit Short Circuit Protection
Hermetic 4-Pin Power Package
FEATURES
APPLICATIONS
The HTPLREG is a hybrid linear regulator designed to
operate over an extremely wide temperature range of -55
to +225
C. The regulator's control circuit is fabricated with
Honeywell's dielectrically isolated high-temperature (HT-
MOSTM) process. A silicon-on-insulator MOSFET is the
power device. The HTPLREG is designed specifically for
severe high-temperature applications such as down-hole
oil well, aerospace, turbine engine and industrial control.
GENERAL DESCRIPTION
Solid State Electronics Center 12001 State Highway 55, Plymouth, MN 55441 (800) 323-8295 http://www.ssec.honeywell.com
The HTPLREG is available with a calibrated +5, +10, or +15V
output. Output current is 300 mA over the specified tempera-
ture range, while quiescent current is 2.0 mA. Internal short
circuit protection is provided. All parts are burned in to
eliminate infant mortality. The HTPLREG is a high-reliability
part designed specifically for applications with an extremely
wide operating temperature range.
FUNCTIONAL DIAGRAM
PACKAGE DRAWING
VOUT
GND
VIN
NSHDN
1
2
3
4
HTPLREG
Case = GND
Control Chip
Current
Sense
Resistor
Application
Load
Nch Power
FET
Gate
Drain
Source
(Shutdown
Input)
VIN
GND
VSENSE
VOUT
VGATE
Vin
Pin 1
NSHDN
Pin 3
& case
Gnd
Vout
Pin 4
HTPLREG MCM
Pin 2
HTPLREG
HTPLREG
900216 Rev. A
10-99
Helping You Control Your World
Honeywell reserves the right to make changes to any products or technology herein to improve reliability, function or design. Honeywell does not assume any liability
arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others.
ELECTRICAL CHARACTERISTICS
ORDERING INFORMATION
ABSOLUTE MAXIMUM RATINGS (1)
(1) Stresses in excess of those listed above may result in permanent
damage. These are stress ratings only, and operation at these
levels is not implied. Frequent or extended exposure to absolute
maximum conditions may affect device reliability.
+5V Output and TA = -55 to +225
C, unless otherwise specified
1. HIGH TEMPERATURE DEVICE STARTUP: If power is interrupted
while these devices are at high temperatures, they may not re-start
properly when power is re-applied. For this reason care must be
taken (by proper heat-sinking and/or load management) so the case
temperature does not exceed 215
C for +5V and +10V regulators
HTPLREG-05 and HTPLREG-10). For +15V regulators (HTPLREG-
APPLICATION NOTES
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15) the case temperature should not exceed 200
. The minimum
overhead voltage required to assure proper startup at high
temperature is (Vin-Vout)=4 Volts.
2. NSHDN should be pulled low to turn off the device. NSHDN pin may
be left open for normal operation. Voltage applied to the NSHDN pin
should not exceed 0V<NSHDN<5V.
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