This is preliminary information on a new product foreseen to be developed. Details are subject to change without notice.

October 2014

DocID026997 Rev 1

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R7986A

3 A step-down switching regulator for aerospace applications

Datasheet

Features

 General features

– 3 A DC output current

– 4.5 V to 38 V input voltage

– Large ambient temperature range:

-40 °C to 125 °C

– Output voltage adjustable from 0.6 V

– 250 kHz switching frequency,

programmable up to 1 MHz

– Internal soft-start and enable

– Low dropout operation: 100% duty cycle

– Voltage feed-forward

– Zero load current operation

– Overcurrent and thermal protection

– HSOP8 package

 Aerospace and defense features

– Suitable for use in aerospace and defense

applications

– Dedicated traceability and part marking

– Production parts approval documents

available

– Adapted extended life time and

obsolescence management

– Extended product change notification

process

– Designed and manufactured to meet sub-

ppm quality goals

– Advanced mold and frame designs for

superior resilience in harsh environments

(acceleration, EMI, thermal, humidity)

– Extended screening capability on request

Applications

 Dedicated to aerospace applications

 Aerospace LED driving

Description

The R7986A is a step-down switching regulator

with a 3.7 A (min.) current limited embedded

power MOSFET, so it is able to deliver up to 3 A

current to the load depending on the application

conditions.

The input voltage can range from 4.5 V to 38 V,

while the output voltage can be set starting from

Requiring a minimum set of external components,

the device includes an internal 250 kHz switching

frequency oscillator that can be externally

adjusted up to 1 MHz. The large ambient

temperature range makes it ideal for aerospace

and defense applications.

The HSOP8 package with exposed pad allows

HSOP8 exposed pad

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