Embedded Power for

Business-Critical Continuity

Rev.06.27.07

SMT12F

5 of 5

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SEATING

PLANE

0.630

±0.010

[16.00

±0.25]

Dimensions in Inches (mm)

Tolerances (unless otherwise specified)

±0.005 (±0.127)

63

54

2 1

8

7

9

10

0.470 [11.94]

BOTTOM VIEW

0.340 [8.64]

0.000 [0.00]

0.065 [1.65]

0.000 [0.00]

0.455 [11.56]

TOP VIEW

SIDE VIEW

Figure 5 - Mechanical Drawing

Pin No. Pin Description

1

Trim: A 1% 0.1 W resistor must be directly connected

between this pin and pin 8 (GND) to set the output

voltage to a lower value than 3.3 V. The temperature

stability of the resistor should be 100 ppm/°C or better.

The set point range for the 3.3 V model is from 3.3 V to

0.9 V. The resistor required for a given output voltage

may be calculated from the following formula.

If left open circuit the output voltage will default to 3.3 V.

The set point range for the 2.6 V model is from 2.6-0.9 V.

The resistor required for a given output voltage may be

calculated from the following formula

If left open circuit the output voltage will default to 2.6 V.

For further information on output voltage adjustment

consult the Application Note 165.

2

Margin+: When this input is asserted to High, the output

voltage is increased by 5%. This function is independant

of trim and sense.

Pin No. Pin Description

3

Remote ON/OFF: Applying a high level signal to this

input disables the module’s output and turns off the

output voltage.

When the Remote ON/OFF control is active, the

input current drawn by the regulator is significantly

reduced. If the Remote ON/OFF pin is left open-

circuit, the module will produce an output whenever

a valid input source is applied.

4

Margin-: When this input is asserted high, the

output voltage is decreased by 5% from the nominal.

This functions is independant of trim and sense.

5

V 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 node of

bypass capacitor. It can also be left disconnected.

6

V sense -: The VSense should be connected to the

ground of a bypass capacitor near the load or left

open circuit.

7

+Vout: The regulated positive power output with

respect to the GND node.

8

Ground: This is the common ground connection for

the Vin and Vout power connections. It is also the 0

Vdc reference for the control inputs.

9

+Vin: The positive input voltage power node to the

module,which is referenced to common GND.

10

Power Good: This pin indicates the status of the

output voltage. Power Good is driven low if output

voltage deviates outside of specified limits.