L4920
非常LOWDROP可调稳压器 VERY LOWDROP ADJUSTABLE REGULATORS
DESCRIPTION
The and L4921 are adjustable voltage regulator swith a very low voltage drop0.4V typ.at 0.4A Tj = 25°C, low quiescent current and comprehensive on-chip protection.
These devices are protected against load dump and field decay transients, polarity reversal and over heating.
A foldback current limiter protects against load short circuits.
The output voltage is adjustable through an external divider from 1.25V to 20V. The minimum operating input voltage is 5.2V TJ = 25°C.
. VERY LOW DROP VOLTAGE
. ADJUSTABLE OUTPUT VOLTAGE FROM 1.25V TO 20V
. 400mA OUTPUT CURRENT
. LOW QUIESCENT CURRENT
. REVERSE VOLTAGE PROTECTION
. + 60/ − 60V TRANSIENT PEAK VOLTAGE PROTECTION
. SHORT CIRCUIT PROTECTION WITH FOLD BACK CHARACTERISTICS
. THERMAL SHUT-DOWN