iru1261 International Rectifier Corp., iru1261 Datasheet - Page 2
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iru1261
Manufacturer Part Number
iru1261
Description
Dual 6a And 1a Low Dropout Positive Fixed 1.5v And 2.5v Regulator
Manufacturer
International Rectifier Corp.
Datasheet
1.IRU1261.pdf
(8 pages)
IRU1261
ABSOLUTE MAXIMUM RATINGS
Input Voltage (V
Power Dissipation ..................................................... Internally Limited
Storage Temperature Range ...................................... -65°C To 150°C
Operating Junction Temperature Range .....................
PACKAGE INFORMATION
ELECTRICAL SPECIFICATIONS
Unless otherwise specified, these specifications apply over C
values refer to T
PARAMETER
V
Output Voltage #2
Output Voltage #1
Line Regulation
Load Regulation (Note 1)
Dropout Voltage (Output #2)
Dropout Voltage (Output #1)
Current Limit (Output #2)
Current Limit (Output #1)
Minimum Load Current
Thermal Regulation
Ripple Rejection
Temperature Stability
Long Term Stability
RMS Output Noise
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 V
tain regulation at V
voltage drops 1% below its nominal value.
2
CTRL
5-PIN PLASTIC TO-263 (M)
Input Voltage
JA
=308C/W for 1"sq pad
J
IN
=258C. I
) .................................................... 7V
5
4
3
2
1
OUT
. It is measured when the output
FL
V
V
Gnd
V
V
OUT
IN
OUT
CTRL
=6A for output #2 and 1A for output #1. V
IN
1
2
and V
OUT
SYM
V
V
O2
O1
required to main-
5-PIN ULTRA THIN-PAK
Io=10mA, T
Io=10mA
Io=10mA, T
Io=10mA
Io=10mA, 3.1V<V
10mA<Io<I
Note 2, Io=6A, V
Note 2, Io=1A, V
DVo=100mV
DVo=100mV
Note 3
30ms Pulse, Io=I
f=120Hz, Co=25mF Tantalum,
Io=0.5 3 I
Io=10mA
T
10Hz<f<10KHz
J
=1258C, 1000Hrs
JA
=308C/W for 1"sq pad
TEST CONDITION
www.irf.com
FL
FL
J
J
=25 C
=25 C
0°C To 150°C
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.
5
4
3
2
1
CTRL
CTRL
FL
IN
<3.6V
V
V
Gnd
V
V
=4.75V
=4.75V
IN
OUT
IN
OUT
CTRL
=1mF, C
TM
1
2
CTRL
(P)
=5V, V
OUT
=100mF and T
IN
=3.3V.
1.485
1.470
2.462
2.425
MIN
3.0
6.1
1.1
1.500
1.500
2.500
2.500
0.003
TYP
0.01
0.2
0.4
0.4
0.5
0.3
70
J
5
=0 to 1508C. Typical
1.515
1.530
2.537
2.575
MAX
0.02
1.3
0.6
10
UNITS
09/19/02
Rev. 2.0
%/W
%V
mA
dB
%
%
%
%
V
V
V
V
V
A
A
O