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PTMA40XXXX

PTMA403033

PTMA402050

PTMA401120

SLTS259A – FEBRUARY 2006 – REVISED MARCH 2006

TERMINAL FUNCTIONS

TERMINAL

DESCRIPTION

NAME

NO.

positve logic and negative logic. Positive logic devices are enabled by applying a logic high voltage (Open) and

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more detailed information.

This pin also has the option of a synchronization input. A module that has the synchronization option does not

have ON/OFF enable control. A 5-V logic signal greater than the free-running frequency but

≤ 350 kHz is required

for synchronization control. See the Application Information section for more detailed information.

The negative input supply for the module, and the 0-V reference for the Enable/Sync inputs. When powering the

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module from a positive source, this input is connected to the input source return.

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this input is connected to the input source ground.

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This pin allows the output voltage set point of the module to be increased or decreased up to

± 10 %. Connecting

Trim

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and temperature stability of 1% and 100 ppm/°C, respectively. If left open circuit, the converter output voltage

defaults to its nominal value. The specification table gives the standard resistor values for the most common

output voltages.

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circuit.

(1)

These functions indicate signals electrically common with the input.

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