L4805-L4885-L4892

L4808-L4810-L4812

March 1992

VERY LOW DROP VOLTAGE REGULATORS

.

INPUT/OUTPUT DROP TYP. 0.4V

.

400mA OUTPUT CURRENT

.

LOW QUIESCENT CURRENT

.

REVERSE POLARITY PROTECTION

.

OVERVOLTAGE PROTECTION (

± 60V)

.

FOLDBACK CURRENT LIMITING

.

THERMAL SHUTDOWN

TO-220

DESCRIPTION

L4800 series devices are voltage regulators with a

very low voltage drop (typically 0.4V at full rated cur-

rent), output current up to 400mA, low quiescent

current and comprehensiveon-chip protection.The-

se devices are protected against load dump and

field decay transients of

± 60V, polarity reversal and

overheating. A foldback current limiter protects

against load short circuits. Available in 5V, 8.5V,

9.2V,10V and 12V versions (all

se regulators are designed for automotive, industrial

and consumer applications where low consumption

is particularly important.

BLOCK DIAGRAM

In automotive applications the L4805 is ideal for 5V

logic supplies becauseit can operateeven when the

batteryvoltage falls below 6V. In battery backup and

standby applications the low consumption of these

devices extends battery life.

SO T-82

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