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IRU1237SC Datasheet(PDF) 3 Page - International Rectifier

Part # IRU1237SC
Description  THREE INTEGRATED, FIXED OUTPUT LINEAR VOLTAGE REGULATORS
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

IRU1237SC Datasheet(HTML) 3 Page - International Rectifier

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IRU1237SC
3
Rev. 1.2
07/14/03
www.irf.com
Ripple Rejection
(VCC to Output #1)
Ripple Rejection
(VCC to Output #2)
Ripple Rejection
(VDD to Output #3)
TJ Thermal Shutdown
Temperature Stability
Long Term Stability
RMS Output Noise
VCC Quiescent current
VDD Quiescent current
PARAMETER
SYM
TEST CONDITION
MIN
TYP
MAX
UNITS
30
30
40
40
40
50
150
0.5
0.3
0.003
4
12
8
20
dB
dB
dB
8C
%Vo
%Vo
%Vo
mA
mA
Note 7, 100Hz<f<100KHz, IO=IFL1/10
Note 7, 100Hz<f<100KHz, IO=IFL2/10
Note 7, 100Hz<f<100KHz, IO=IFL3/10
Note 7
Note 6 and 7, IO=10mA
Note 7, TJ=125
8C, 1000Hrs
Note 7, 10Hz<f<10KHz
IO1=IO2=IO3=0
IO1=IO2=IO3=0
PSRR1
PSRR2
PSRR3
TTHERM
StabTEMP
StabLONG
VN
IQ1
IQ2
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 voltage between VIN and VOUT required to main-
tain regulation at VOUT. It is measured when the output
voltage drops 1% below its nominal value.
Note 3: Transient response is defined with a step change
in load from 10mA to IFL/2, as the time from the load step
until the output voltage reaches its minimum value.
Note 4: Minimum load current is defined as the mini-
mum current required at the output in order for the out-
put voltage to maintain regulation.
Note 5: The regulator shall withstand 100,000 reverse
bias discharges of the maximum output capacitance,
with no degradation, when the input voltage is switched
to ground in 1
ms.
Note 6: Temperature stability is the change in output
from nominal over the operating temperature range.
Note 7: Guaranteed by design, but not tested in produc-
tion.
PIN#
PIN SYMBOL
PIN DESCRIPTION
Gnd26/33, Gnd8
V33
VCC
V8
VDD
V26
These pins are connected to ground. It is also the tab of the device.
Output #1. Fixed regulator output (3.3V).
Positive unregulated supply input for the regulator. This pin must always be higher than
both VOUT pins by the amount of the dropout voltage in order for the device to regulate
properly. Bypass to ground with low ESR and ESL capacitance.
Output #3. Fixed regulator output (8V).
Input voltage to supply the base current for the pass transistor for both regulators.
Output #2. Fixed regulator output (2.6V).
PIN DESCRIPTIONS
1,4
2
3
5
6
7


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