iru1175 International Rectifier Corp., iru1175 Datasheet - Page 3

• Manufacturer Part Number: iru1175
• Description: 7.5a Ultra Low Dropout Positive Adjustable Regulator -
• Manufacturer: International Rectifier Corp.

Note 1: Low duty cycle pulse testing with Kelvin con-
nections are required in order to maintain accurate data.
Note 2: Dropout voltage is defined as the minimum dif-
ferential between V in and V out required to maintain regu-
lation at V out . It is measured when the output voltage
drops 1% below its nominal value.
PIN DESCRIPTIONS
PIN #
ELECTRICAL SPECIFICATIONS
PARAMETER
Control Pin Current
Adjust Pin Current
Rev. 1.2
11/29/99
1
2
3
4
5
PIN SYMBOL
V sense
Adj
V out
V ctrl
V in
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 V out pin and ground sets the output voltage.
The output of the regulator. A minimum of 10 F 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 V out 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
V out in order for the device to regulate. (see specifications)
SYM
Iadj
TEST CONDITION
Vadj=0V for all below conditions.
Vctrl=2.75V, Vin=2.05V, Io=1.5A
Vctrl=2.75V, Vin=2.05V, Io=3A
Vctrl=2.75V, Vin=2.05V, Io=5A
Vctrl=2.75V, Vin=2.05V, Io=7.5A
Vctrl=2.75V, Vin=2.05V, Vadj=0V
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.
MIN
TYP
15
30
50
75
50
MAX
120
IRU1175
UNITS
2-81
mA
A