PTV05020W Datasheet, PDF (5/17 Pages) Texas Instruments – 18-A, 5-V INPUT NONISOLATED WIDE-OUTPUT ADJUST SIP MODULE

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DEVICE INFORMATION
PTV05020W
SLTS232 – JANUARY 2005
TERMINAL FUNCTIONS
TERMINAL
NAME
NO.
DESCRIPTION
V_I
V_O
GND
5, 6
The positive input voltage power node to the module, which is referenced to common GND.
3, 4
The regulated positive power output with respect to the GND node.
1, 2, 10, 11
This is the common ground connection for the V_I and V_O power connections. It is also the 0-Vdc reference for the
control inputs.
Inhibit
The Inhibit pin is an open-collector/drain, active-low input that is referenced to GND. Applying a low-level ground
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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 regulator is significantly reduced. If the inhibit feature is not used, the control pin
should be left open-circuit. The module then produces an output voltage whenever a valid input source is applied.
A 1% resistor must be connected directly between this pin and GND (pin 1 or 2) to set the output voltage of the
module higher than its lowest value. The temperature stability of the resistor should be 100 ppm/°C (or better).
The set-point range is 0.8 V to 3.6 V. The resistor value can be calculated using a formula. If this input is left
V_o Adjust
8
open-circuit, the output voltage defaults to its lowest value. For further information, consult the related application
note.
The specification table gives the standard resistor values for a number of common output voltages.
V_o Sense
7
The sense input allows the regulation circuit to compensate for voltage drop between the module and the load. For
optimal voltage accuracy V_o Sense should be connected to V_O. It can also be left disconnected.
Track
This is an analog control input that enables the output voltage to follow an external voltage. This pin becomes
active typically 20 ms after the input voltage has been applied, and allows direct control of the output voltage from
0 V up to the nominal set-point voltage. Within this range, the output follows 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 set-point
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voltage. The feature allows the output voltage to rise simultaneously with other modules powered from the same
input bus. If unused, this input should be connected to V_I.
NOTE: Due to the undervoltage lockout feature, the output of the module cannot follow its own input voltage
during power up. Consult the related Application Information for further guidance.
Front View of Module
PIN 1
PIN 5
Figure 5. Pin Terminal Locations
PIN 12
5