L4918

October 1988

VOLTAGE REGULATORS PLUS FILTER

PRELI MINARY DATA

.

FIXED OUTPUT VOLTAGE 8.5V

.

250mA OUTPUT CURRENT

.

HIGH RIPPLE REJECTION

.

HIGH LOAD REGULATION

.

HIGH LINE REGULATION

.

SHORT CIRCUIT PROTECTION

.

THERMAL SHUT DOWN WITH HYSTERESIS

.

DUMP PROTECTION

DESCRIPTION

The L4918 combines both a filter and a voltage regu-

lator in order to provide a high ripple rejection over a

wider input voltage range.

A supervisor low-pass loop of the element prevents

the output transistor from saturation at low input vol

tages.

The non linear behaviour of this control circuitry al-

lows a fast setting of the filter.

PENTAWATT

ORDERING NUMBER : L4918

BLOCK DIAGRAM

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