AIC1747
DETAILED DESCRIPTION OF TECHNICAL TERMS
DROPOUT VOLTAGE (V
DROP
)
The dropout voltage is defined as the difference
between input voltage and output voltage at
which point the regulator starts to fall out of
regulation. Below this value, the output voltage
will fall while the input voltage is reduced. It
depends on the load current and junction
temperature. The dropout voltage is specified at
which the output voltage drops 100mV below the
value measured with 1V difference.
THERMAL PROTECTION
LINE REGULATION
Line regulation is the ability of the regulator to
maintain a constant output voltage as the input
voltage changes. The line regulation is specified
as the input voltage is changed from V
IN
= V
OUT
+
1 V to 5.5 V and I
OUT
= 1mA.
LOAD REGULATION
Load regulation is the ability of the regulator to
maintain a constant output voltage as the load
current
changes.
To
minimize
temperature
The thermal sensor protects the device when the
junction temperature exceeds T
J
= +150ºC. It
signals, the shutdown logic, turning off the pass
transistor and allowing the IC to cool. Thermal
protection is designed to protect the device in the
event
of
fault
conditions.
For
continuous
operation do not exceed the absolute maximum
junction-temperature rating of T
J
= 150ºC, or
damage the device.
effects, it is a pulsed measurement with the input
voltage set to V
IN
= V
OUT
+ 1 V. The load
regulation is specified under the output current
step of 0.1mA to 300mA.
CURRENT LIMIT (I
IL
)
The AIC1747 includes a current limiting, which
monitors and controls the maximum output
current if the output is shorted to ground. This
can protect the device from being damaged.
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AIC [ ANALOG INTERGRATIONS CORPORATION ]
