OMR9601

Rev D, 02/14/2002

205 Crawford Street

• Leominster MA 01453 • Phone: 978 534 5776 • Fax: 978 537 4246 • www.omnirel.com

1 M Rad (Si), ULTRA LOW DROPOUT

POSITIVE LINEAR REGULATOR

FEATURES

• Total dose and low dose capability to 1M Rad (Si) allows use in space applications

• Ultra low dropout voltage of 0.4V @ 3A out significantly reduces power consumption

• Low noise, higher efficiency

• Remote Shutdown permits power sequencing to be easily implemented

• Hermetic MO-078AA (TO-258) and 8-lead flat pack ensure higher reliability

• K-level screened

DESCRIPTION

The OMR9601 is a radiation hardened, ultra low dropout linear regulator designed

specifically for space applications. This product has been characterized to a total ionizing

dose of 1M Rad (Si) per MIL-STD-883, Method 1019, Condition A at both high and low

dose rates under biased and unbiased conditions to account for ELDRE effects in bipolar

devices. The ultra low dropout voltage of 0.4V @ 3A makes the part particularly useful for

applications requiring low noise and higher efficiency.

°°°C unless otherwise specified)

Parameter

Symbol

Value

Unit

Output Current

Io

3.5

A

Input Voltage

Vin

+7.0

V

Lead Temperature

Tl

300

°C

19

W

Thermal Resistance, Junction to Case – MO-078AA

6.5

°C/W

Thermal Resistance, Junction to Case – 8 Lead Flat Pack

6.5

°C/W

Operating Temperature

-55…+125

°C

Storage Temperature Range

Ts

-65…+150

°C

Block Diagram

(Pin 4)

O

O

Vout

Vin

GND

Shutdown

O

(Pin 1)

(Pin 3)

(Pin 2)

SHDN

Reg.

Control

+3.3Vin to +2.5V Output at 3.0A

In Hermetic Packages