iru1117-18 International Rectifier Corp., iru1117-18 Datasheet

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iru1117-18

Manufacturer Part Number
iru1117-18
Description
800ma Dropout Positive Fixed 1.8v Regulator
Manufacturer
International Rectifier Corp.
Datasheet

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iru1117-18CP
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iru1117-18CS
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FEATURES
APPLICATIONS
TYPICAL APPLICATION
PACKAGE ORDER INFORMATION
Rev. 1.1
06/29/01
Guaranteed < 1.2V Dropout at 800mA Load
Current
Fast Transient Response
1% Voltage Reference Initial Accuracy
Built-In Thermal Shutdown
Available in SOT-223, D-Pak, Ultra Thin-Pak and
8-Pin SOIC Surface-Mount Packages
Low Voltage IC Supply Applications
PC Clock Supply Voltage
3.3V
0 To 125
Tj (°C)
IRU1117-18
Figure 1 - Typical set-up of the IRU1117-18 in a 3.3V to 1.8V regulator application
TO-252 (D-Pak)
2-PIN PLASTIC
IRU1117-18CD
Vout
Gnd
Vin
10uF
C1
3
2
1
3-PIN PLASTIC
IRU1117-18CY
SOT-223 (Y)
800mA LOW DROPOUT POSITIVE
DESCRIPTION
The IRU1117-18 is a low dropout three-terminal fixed out-
put regulator with minimum of 800mA output current ca-
pability. This product is specifically designed to provide
well regulated supply for low voltage IC applications as
well as generating clock supply for PC applications. The
IRU1117-18 is guaranteed to have <1.2V dropout at full
load current making it ideal to provide well regulated with
3.8V input supply. The IRU1117-18 is specifically de-
signed to be stable with low cost aluminum capacitors
while maintaining stability with low ESR tantalum caps.
Ultra Thin-Pak (P)
2-PIN PLASTIC
IRU1117-18CP
FIXED 1.8V REGULATOR
C2
10uF
PRELIMINARY DATA SHEET
8-PIN PLASTIC
1.8V / 800mA
IRU1117-18CS
Data Sheet No. PD94137
SOIC (S)
IRU1117-18
1

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iru1117-18 Summary of contents

Page 1

... PC Clock Supply Voltage TYPICAL APPLICATION 3.3V C1 10uF 3 Vin IRU1117-18 2 Vout 1 Gnd Figure 1 - Typical set-up of the IRU1117- 3.3V to 1.8V regulator application PACKAGE ORDER INFORMATION Tj (°C) 2-PIN PLASTIC TO-252 (D-Pak 125 IRU1117-18CD Rev. 1.1 06/29/01 800mA LOW DROPOUT POSITIVE FIXED 1.8V REGULATOR DESCRIPTION The IRU1117- low dropout three-terminal fixed out- put regulator with minimum of 800mA output current ca- pability ...

Page 2

... IRU1117-18 ABSOLUTE MAXIMUM RATINGS Input Voltage (Vin) .................................................... Power Dissipation ..................................................... Storage Temperature Range ...................................... Operating Junction Temperature Range ..................... PACKAGE INFORMATION 2-PIN PLASTIC TO-252 (D-Pak) 3-PIN PLASTIC SOT-223 (Y) FRONT VIEW Vin 3 Tab is Tab is Vout Gnd 1 =70 C/W for 0.5" Sq pad JA JA ELECTRICAL SPECIFICATIONS Unless otherwise specified, these specifications apply over Cin=1µF, Vin=5V,Cout=10µF, and Tj=0 to 125!C. ...

Page 3

... This pin must always be 1.3V higher than Vout in order for the device to regulate properly. BLOCK DIAGRAM Vin 3 CURRENT LIMIT THERMAL SHUTDOWN Figure 2 - Simplified block diagram of the IRU1117-18 Rev. 1.1 06/29/01 + 1117-18blk1-1.0 IRU1117-18 2 Vout + 1.25V ...

Page 4

... IRU1117-18 IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 4 Visit us at www.irf.com for sales contact information. Data and specifications subject to change without notice. 02/01 Notes TAC Fax: (310) 252-7903 Rev. 1.1 06/29/01 ...

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