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ASA28XXS SERIES

Description

Up To 5.0W Output Power

5V, 12V,15V Outputs

High Reliability

Wide Input Voltage Range -16V To 40V

Indefinite Short Circuit and Overload Protection

Popular Industry Standard Pin-Out

Military Screening Available

Parallel Seam Welded Package

No External Capacitors Required

Input Voltage Surge Protected to MIL-STD-704A

Under Voltage Lockout

Available as Standard Military Drawing

Standard Microcircuit Drawings Available

Features

28V Input, Single Output

The ASA28XXS Series of DC/DC converters are high

reliability thick film hybrid converters that use flyback

topology operating at a nominal frequency of 550KHz.

High input to output isolation is achieved through the

use of transformers in the flyback power and feedback

circuits.

The advanced feedback design provides fast loop

response for superior line and load transient

characteristics and offers greater reliability than devices

incorporating optical feedback circuits.

This device is designed to meet MIL-STD-704D input

requirements offering full performance over a 16V to

40V input range. Output Power of up to 5W is available.

Connecting the inhibit pin (pin 5) to the input common

(pin 7) will cause the converter to shut down. It is

recommended that the inhibit pin be driven by an open

collector device capable of sinking at least 400

µA. The

open circuit voltage of the inhibit pin is 11.5 ± 0.5V.

Manufactured in a facility fully qualified to MIL-PRF-

38534, these converters are fabricated utilizing DSCC

qualified processes. For available screening options,

refer to device screening table in the data sheet.

Variations in electrical, mechanical and screening

requirements can be accommodated. Extensive

design modifications to be examined. Contact IR Santa

Clara with specific requirements.

01/11/07

HYBRID-HIGH RELIABILITY

DC/DC CONVERTER

ASA

PD-94539A