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Pin Descriptions
GND:
This is the common ground connection for the
Vin and Vout power connections. It is also the 0 VDC
reference for the control inputs.
Vin:
The positive input voltage power node to the mod-
ule, which is referenced to common GND.
Inhibit:
The Inhibit pin is an open-collector/drain negative
logic input that is referenced to GND. Applying a low-
level ground signal to this input disables the module’s
output and turns off the output voltage. When the Inhibit
control is active, the input current drawn by the regula-
tor is significantly reduced. If the Inhibit pin is left
open-circuit, the module will produce an output when-
ever a valid input source is applied.
Vo Adjust:
A 0.1 W, 1 % tolerance (or better) resistor
must be directly connected between this pin and pin 7
(GND) pin to set the output voltage to the desired value.
The set point range for the output voltage is from 0.8 V
to 3.6 V. The resistor required for a given output volt-
age may be calculated from the following formula. If
left open circuit, the module output will default to its
lowest output voltage value. For further information on
output voltage adjustment consult the related application
note.
Rset
= 10 k
0.8 V
– 2.49 k
Vout – 0.8 V
The specification table gives the preferred resistor values
for a number of standard output voltages.
Vo Sense:
The sense input allows the regulation circuit to
compensate for voltage drop between the module and
the load. For optimal voltage accuracy Vo Sense should
be connected to Vout. It can also be left disconnected.
Vout:
The regulated positive power output with respect
to the GND node.
Track:
This is an analog control input that allows the
output voltage to follow another voltage during power-
up and power-down sequences. The pin is active from
0 V 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 volt-
age is raised above this range, the module regulates at its
nominal output voltage. If unused, this input may be left
unconnected. For further information consult the related
application note.
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 accomodated with a series resistor. For further infor-
mation, consult the related application note.
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. For further information, consult the
related application note.
Ordering Information
15-A, 5-V Input Non-Isolated
Wide-Output Adjust Power Module
ATH15T05 —5-V Input
Input Voltage
Output Voltage
Output Current
Model Number
4.5V to 5.5V
0.8V1 to 3.6V
15A
ATH15T05-9(S)(J)
Options:
“-J”
-
Through-hole Termination, Tray Packaging
“-SJ”
-
SMT Termination, Tray Packaging
“-S”
-
SMT Termination, T&R Packaging
Notes:
1Preset output voltage is 0.8V; externally adjustable to 3.6V through the Vo,Adjust pin
REVISION 00 (3DEC2003)