iru1176 International Rectifier Corp., iru1176 Datasheet - Page 3

• Manufacturer Part Number: iru1176
• Description: 7.5a Ultra Low Dropout Positive Adjustable Regulator With Shutdown Input
• Manufacturer: International Rectifier Corp.

PARAMETER
Control Pin Current
Adjust Pin Current
Note 1: Low duty cycle pulse testing with Kelvin con-
nections is required in order to maintain accurate data.
Note 2: Dropout voltage is defined as the minimum dif-
ferential between V
lation at V
drops 1% below its nominal value.
PIN DESCRIPTIONS
PIN #
Rev. 1.4
03/18/02
6, 7
1
2
3
4
5
PIN SYMBOL
OUT
V
V
V
. It is measured when the output voltage
SD
Adj
SENSE
V
CTRL
OUT
IN
IN
and V
This pin is the positive side of the reference which allows remote load sensing to achieve
excellent load regulation.
When this pin is pulled lower than 1.4V with respect to the V
down. To enable the operation leave this pin open. Internal to device, there is a pull-up
resistor.
A resistor divider from this pin to the V
The output of the regulator. A minimum of 10mF 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
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
order for the device to regulate. (See specifications)
OUT
PIN DESCRIPTIONS
required to maintain regu-
SYM
I
ADJ
TEST CONDITION
V
V
V
V
V
V
ADJ
CTRL
CTRL
CTRL
CTRL
CTRL
=0V for all below conditions:
=2.75V, V
=2.75V, V
=2.75V, V
=2.75V, V
=2.75V, V
www.irf.com
IN
IN
IN
IN
IN
=2.05V, Io=1.5A
=2.05V, Io=3A
=2.05V, Io=4A
=2.05V, Io=7.5A
=2.05V, V
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.
OUT
pin and ground sets the output voltage.
ADJ
=0V,
MIN
OUT
TYP
pin in order for the device to
CTRL
50
pin the device is shut-
MAX
120
IRU1176
UNITS
mA
mA
OUT
3
in