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Zetex Semiconductors - 3.3 VOLT ULTRA LOW DROPOUT REGULATOR

Numéro de référence ZLDO330
Description 3.3 VOLT ULTRA LOW DROPOUT REGULATOR
Fabricant Zetex Semiconductors 
Logo Zetex Semiconductors 





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ZLDO330 fiche technique
3.3 VOLT ULTRA LOW DROPOUT
REGULATOR
ISSUE 2 - MAY 1997
ZLDO330
DEVICE DESCRIPTION
The ZLDO Series low dropout linear
regulators operate with an exceptionally
low dropout voltage, typically only 30mV
with a load current of 100mA. The regulator
series features output voltages in the range
2.7 to 18 volts, this device provides an output
voltage of 3.3 volts.
The ZLDO330 consumes a typical quiescent
current of only 560µA and is rated to supply
load currents up to 300mA. A battery low flag
is available to indicate potential power fail
situations. If the input voltage falls to within
300mV of the regulated output voltage then
the error output pulls low. The device also
features an active high disable control. Once
disabled the ZLDO quiescent current falls to
typically 11µA.
The ZLDO devices are packaged in Zetex
SM8 8 pin small outline surface mount
package, ideal for applications where space
saving is important. The device low dropout
voltage, low quiescent current and small size
make it ideal for low power and battery
powered applications. Battery powered
circuits can make particular use of the low
battery flag and shutdown features.
FEATURES
Very low dropout voltage
6mV dropout at 10mA output
30mV dropout at 100mA output
100mV dropout at 300mA output
3.3 volt fixed output
Other voltages available
Low quiescent current
1mA quiescent (typ) at 300mA output
Low battery flag
Shutdown control
Surface mount package
APPLICATIONS
Battery powered devices
Portable instruments
Portable communications
Laptop/Palmtop computers
Electronic organisers
Low Battery Flag
THERMAL
SHUTDOWN
LOW BATTERY
COMPARATOR
Vin
Vo
Shutdown
Control
SHUTDOWN
BIAS
CIRCUIT
OUTPUT
DRIVE
BANDGAP
REFERENCE
Cs
Gnd
4-62
Shaping

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