IRU1205 Datasheet, PDF (1/6 Pages) International Rectifier – 300mA ULTRA LOW DROPOUT POSITIVE ADJUSTABLE AND FIXED REGULATORS

Data Sheet No. PD94133
IRU1205
IRU1205-18 / IRU1205-25 / IRU1205-28
IRU1205-30 / IRU1205-33 / IRU1205-36
300mA ULTRA LOW DROPOUT POSITIVE
ADJUSTABLE AND FIXED REGULATORS
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
APPLICATIONS
Laptop, Notebook & Palmtop computers
Battery Powered Equipments
PCMCIA Vcc & Vpp Regulator
Consumer Electronics
High Efficiency Linear Power Supplies
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.
TYPICAL APPLICATION
VIN
C1
2.2uF
1 VIN
2 Gnd
VOUT 5
SD Enable
3 En
Adj 4
VOUT
R1
( ) _C2
Vo = 1.253
1+
R1
R2
2.2uF
R2
Figure 1 - Typical application of the IRU1205 ajustable voltage regulator.
3.3V
C1
2.2uF
1 VIN
VOUT 5
2 Gnd
C2
2.2uF
2.5V
SD Enable
3 En
CBYP ₄
C3
1000pF
Figure 2 - Typical application of the IRU1205-25 fixed voltage regulator.
PACKAGE ORDER INFORMATION
TJ (°C)
0 To 125
0 To 125
0 To 125
0 To 125
0 To 125
0 To 125
0 To 125
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
OUTPUT
VOLTAGE
Adj
1.8V
2.5V
2.8V
3.0V
3.3V
3.6V
Rev. 2.3
07/16/02
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