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IRU1205-XX Datasheet

  • IRU1205-XX

  • 300mA ULTRA LOW DROPOUT POSITIVE ADJUSTABLE AND FIXED REGULA...

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IRU1205
IRU1205-18 / IRU1205-25 / IRU1205-28
IRU1205-30 / IRU1205-33 / IRU1205-36
Data Sheet No. PD94133
FEATURES
SOT-23 Package
Stable with 2.2mF Ceramic Capacitor
1% Voltage Reference Accuracy
Only 270mV Dropout at 300mA
and 170mV Dropout at 150mA
5mA Quiescent Current in Shutdown
Current Limit and Thermal Shutdown
Logic Input Enable Pin
300mA ULTRA LOW DROPOUT POSITIVE
ADJUSTABLE AND FIXED REGULATORS
DESCRIPTION
The IRU1205 device is an efficient linear voltage regula-
tor with better than 1% initial voltage accuracy, very low
dropout voltage and very low ground current designed
especially for hand held, battery powered applications.
Other features of the device are: TTL compatible enable/
shutdown control input, current limiting and thermal shut-
down.
The IRU1205 is available in fixed and adjustable output
voltage versions in a small SOT-23 5-Pin package.
APPLICATIONS
Laptop, Notebook & Palmtop computers
Battery Powered Equipments
PCMCIA Vcc & Vpp Regulator
Consumer Electronics
High Efficiency Linear Power Supplies
TYPICAL APPLICATION
V
IN
C1
2.2uF
1
2
V
IN
V
OUT
5
R1
C2
2.2uF
R2
V
OUT
Vo = 1.253 1+
Gnd
(
R1
R2
)
SD
Enable
3
En
Adj
4
Figure 1 - Typical application of the IRU1205 ajustable voltage regulator.
3.3V
C1
2.2uF
1
2
V
IN
V
OUT
5
C2
2.2uF
2.5V
Gnd
SD
Enable
3
En
C
BYP
4
C3
1000pF
Figure 2 - Typical application of the IRU1205-25 fixed voltage regulator.
PACKAGE ORDER INFORMATION
T
J
(擄C)
0 To 125
0 To 125
0 To 125
0 To 125
0 To 125
0 To 125
0 To 125
Rev. 2.3
07/16/02
5-PIN
SOT-23 (L5)
IRU1205CL
IRU1205-18CL
IRU1205-25CL
IRU1205-28CL
IRU1205-30CL
IRU1205-33CL
IRU1205-36CL
SOT-23
MARKING
AT00
AT18
AT25
AT28
AT30
AT33
AT36
www.irf.com
OUTPUT
VOLTAGE
Adj
1.8V
2.5V
2.8V
3.0V
3.3V
3.6V
1

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