pth12040 Astec Powe, pth12040 Datasheet - Page 6

• Manufacturer Part Number: pth12040
• Description: Pth12040 12vin Single
• Manufacturer: Astec Powe

3.3.6 +Sense
The sense input allows the regulation circuit to compensate for
voltage drop between the module and the load. For optimal voltage
accuracy V
disconnected
3.3.7 -Sense
For optimal voltage accuracy -Sense should be connected to the
ground return at the load. If it is left open, a low value internal
resistor ensures that the output remains in regulation.
3.3.8 V
A 1% tolerance (or better) resistor must be connected directly
between this pin and the output ground (pin 7) to set the output
voltage to a value higher than its lowest value. The set point range is
from 0.8V to 5.5V. The resistor required for a given output voltage
may be calculated from the equations in Section 7.1. If left open-
circuit the output voltage will default to its lowest value. For further
information on output voltage adjustment please see Section 7.
The specification table gives the preferred resistor values for a
number of standard output voltages.
3.3.9 Track
This is an analog control input that allows the output voltage to
follow another voltage during power up and power down sequences.
This pin is active from 0V, up to the nominal set-point voltage. Within
this range the module’s output will follow the voltage at the Track pin
on a volt-for-volt basis. When the control voltage is raised above this
range, the module regulates at its nominal output voltage. If unused
this input should be connected to Vin for a faster power-up. For
further information consult the related application information.
Note: Due to the under-voltage lockout feature, the output of the
module cannot follow its own input voltage during power-up. For
more information, consult Section 10.
3.3.10 Margin Down
When this input is asserted to GND, the output voltage is decreased
by 5% from the nominal. The input requires an open-collector (open-
drain) interface. It is not TTL compatible. A lower percent change can
be accommodated with a series resistor, see Section 7.4.
3.3.11 Margin Up
When this input is asserted to GND, the output voltage is increased
by 5%. The input requires an open-collector (open-drain) interface. It
is not TTL compatible. The percent change can be reduced with a
series resistor, see Section 7.4.
6 6
o
Adjust
o
Sense should be connected to V
File Name: an_pth12040.pdf Rev (02): 21 Dec 2005
out
. It can also be left
4. Packaging Information
4.1 Packaging
4.2 Labelling and Part Numbering Sequence
All units in the series will be clearly marked to allow ease of
identification for the end user.
The PTH12040 are available in trays of 12 units.
Dimensions in Inches (mm)
Material: Black Conductive PS
Supplied with Snap on lid in clear conductive PS
ZYWWBR
BOM REV.
WEEK CODE
MAN.LOCATION/YEAR CODE
PTH12040 Single Series | Application Note 193
PTH
Figure 4 - PTH12040 Part Numbering
SERIES TYPE (POINT OF LOAD ALLIANCE)
12040
ZYWWBR
PTH
Figure 3 - Tray
12.68
(322.0)
DEFAULT
I
V
OUT
IN
12040