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US1175 Fiches technique(PDF) 3 Page - UNISEM

No de pièce US1175
Description  7.5A ULTRA LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR
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Fabricant  UNISEM [UNISEM]
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US1175 Fiches technique(HTML) 3 Page - UNISEM

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US1175
2-3
Rev. 1.2
11/29/99
ELECTRICAL SPECIFICATIONS
ELECTRICAL SPECIFICATIONS
PARAMETER
SYM
TEST CONDITION
MIN
TYP
MAX
UNITS
Control Pin Current
Vadj=0V for all below conditions.
Vctrl=2.75V,Vin=2.05V,Io=1.5A
15
mA
Vctrl=2.75V,Vin=2.05V,Io=3A
30
Vctrl=2.75V,Vin=2.05V,Io=5A
50
Vctrl=2.75V,Vin=2.05V,Io=7.5A
75
Adjust Pin Current
Iadj
Vctrl=2.75V,Vin=2.05V,Vadj=0V,
50
120
uA
PIN DESCRIPTIONS
PIN DESCRIPTIONS
Note 1 : Low duty cycle pulse testing with Kelvin con-
nections are required in order to maintain accurate data.
Note 2 : Drop-out voltage is defined as the minimum
differential between Vin and Vout required to maintain
regulation at Vout. It is measured when the output volt-
age drops 1% below its nominal value.
Note 3 : Minimum load current is defined as the mini-
mum current required at the output in order for the out-
put voltage to maintain regulation. Typically the resistor
dividers are selected such that it automatically main-
tains this current.
PIN DESCRIPTION
This pin is the positive side of the reference which allows remote load sensing
to achieve excellent load regulation.
A resistor divider from this pin to the Vout pin and ground sets the output voltage.
The output of the regulator. A minimum of 10uF capacitor must be connected from this
pin to ground to insure stability.
This pin is the supply pin for the internal control circuitry as well as the base drive for
the pass transistor.This pin must always be higher than the Vout pin in order for
the device to regulate.(see specifications)
The input pin of the regulator.Typically a large storage capacitor is connected from this
pin to ground to insure that the input voltage does not sag below the minimum drop
out voltage during the load transient response. This pin must always be higher than
Vout in order for the device to regulate.(see specifications)
PIN #
PIN SYMBOL
1
Vsense
2
Adj
3
Vout
4
Vctrl
5
Vin


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