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IRU1120
2A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR
International
TOR Rectifier
Data Sheet No. PD94402
IRU1120
2A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR
FEATU RES
Stable with ceramic capacitor
Guaranteed < 1.3V Dropout at Full Load Current
Fast Transient Response
2% Voltage Reference Initial Accuracy
Output Current Limiting
Built-In Thermal Shutdown
APPLICATIONS
I: High Efrciency Linear Regulator
D Hard Disk Drivers, CD-ROMs, DVDs
[I ADSL and Cable Modems
PRELIMINARY DATA SHEET
DESCRIPTION
The IRU1120 is an adjustable linear voltage regulator. It
is packaged in a 5-pin ultra thin-pak surface mount pack-
age. The adjustable output voltage can be set from 1.25V
and up using a simple resistor divider. The input power
can be supplied by a single 5V supply. The regulator is
capable of supplying 2 Amps of continuous current with
an input voltage of 5V. The output is protected by both
current limit and thermal shutdown circuits.
TYPICAL APPLICATION
- - /2.5V@2A
IRU1120 Gad
Ehfj---
3.31/)s--
-CI C2
4.7uF 4.7uF
- X5R _ X5R
- 4.7uF
Figure 1 - Typical application of |RU1120.
PACKAGE ORDER INFORMATION
T, (°C) DEVICE
PACKAGE OUTPUT
0 To 125 IRU1120CP 5-Pin Ultra Thin-PakTM (P) Adjustable
Rev. 1.3 1
08/20/02
International
TOR Rectifier
ABSOLUTE MAXIMUM RATINGS
Input Voltage (V IN) .................................................... 10V
Input Voltage (VCTRL) _................................................ 10V
Operating Junction Temperature Range ..................... -40°C To 150°C
Operating Ambient Temperature Range ..................... -40°C To 125°C
Storage Temperature Range ...................................... -65°C To 150°C
PACKAGE INFORMATION
5-Pin Ultra Thin-PakTM (P)
FRONTVIEVV
5 Cl VADJ
Tab is 4 Cl VOUT
Gnd 3 Cl Gtxt
2 Cl VIN
1 Clunm
0JA=3O°CNV for 1" Square Pad
ELECTRICAL SPECIFICATIONS
Unless otherwise specified, these specifications apply over ©N=CcrmrCouT=4.7wF. Typical values refer to TJ=25°C
unless otherwise noted. bur-2A. VADJ is connected to Vour and VIN=VCTRL=5V unless otherwise noted.
PARAMETER SYM TEST CONDITION MIN TYP MAX UNITS
Output Voltage Vow lo=10mA, TJ=25°C 1.225 1.25 1.275 V
Io=10mA, 0°C< TJ<125°C 1.213 1.25 1.287
Line Regulation RegLINE lo=10mA, VO+1.3V
lo=10mA, VIN=VCTRL=2.6 to 10V for
the following: 0°C< TJ<125°C 1.13 1.25 %V0
-40°C< TJ<125°C 1.4
Load Regulation RegLOAD Note 1, 10mAfollowing: 0°C< TJ<125°C 0.2 0.4 %V0
-40°C< TJ<125°C 0.3
DropoutVoItage VDo1 Note 2, lo=1A, VCTRL=5V,
1/o+Vr)o10°C< TJ<125°C 0.48 0.63 V
40°C< TJ<125°C 0.6
DropoutVoItage V002 Note 2, Io=1.5A, VCTRL=5V,
1/o+Vrxx0°C< TJ<125°C 0.75 0.9 V
-40°C< Tr::1250C 0.94
DropoutVoItage V003 Note 2, lo=2A, VCTRL=5V,
1/o+N/roo3<1hN<3.3V for the following:
0°C< TJ<125°C 1.1 1.25 V
-40°C< TJ<125°C 1.27
DropoutVoItage VDO4 Note 2, lo=1A, VCTRL=V|N for the
following: 0°C< TJ<125°C 1.05 1.2 V
-40°C< TJ<125°C 1.2
2 Rev. 1.3
08/20/02
