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Environmental Specifications

PT4310 Series

Characteristic

Symbol

Conditions

Min

Typ

Max

Units

Operating Temperature Range

–40

—

°C

Solder Reflow Temperature

Surface temperature of module, case or pins

—

—

215

°C

Storage Temperature

—

–40

—

+125

°C

Reliability

MTBF

Per Bellcore TR-332

4.0

—

—

Mechanical Shock

—

Per Mil-Std-883D, method 2002.3,

—

500

—

G’s

1 mS, half-sine, mounted to a fixture

Mechanical Vibration

—

Per Mil-Std-883D, method 2007.2,

—

20

—

G’s

20-2000 Hz, soldered in a PC board

Weight

—

—

—

10

—

grams

Flammability

—

Materials meet UL 94V-0

Notes:

(i) See Safe Operating Area curves or contact the factory for the appropriate derating.

(ii) During solder reflow of SMD package version, do not elevate the module, case, pins, or internal component temperatures above a peak of 215°C. For

further guidance refer to the application note, “Reflow Soldering Requirements for Plug-in Power Surface Mount Products,” (SLTA051).

Pin Descriptions

+Vin:

The positive input supply for the module with respect

central office supply, this input is connected to the primary

system ground.

–Vin:

The negative input supply for the module, and the

0-VDC reference for the ‘Remote On/Off’ and ‘±Vo Adjust’

control inputs. When the module is powered from a +48-V

supply, this input is connected to the input source return.

Remote On/Off:

This is an open-collector (open-drain)

negative logic input that enables the module output. The

input is referenced to –Vin. Applying a low-level ground

signal to this pin disables the module’s outputs. A high

impedance enables the module’s outputs. If not used the

pin should be left unconnected.

The positive regulated power output voltage, which is

referenced to the COM node.

The negative regulated power output voltage, which is

referenced to the COM node.

COM:

The secondary return reference for the module’s two

regulated output voltages. It is dc isolated from the +Vin

and –Vin input supply pins.

±Vo Adjust:

Using a single resistor, this pin allows the

module’s complementary output voltages to be adjusted

higher or lower than their preset value. If not used, this

pin should be left open circuit. Consult the related appli-

cation note for further information.

PT4310 Series —48V

6-W Low-Profile Dual-Output

Isolated DC/DC Converter

SLTS146B - MARCH 2001 - REVISED MAY 2004