IRU431-L3TR International Rectifier, IRU431-L3TR Datasheet

IC REGR LDO LV SHUNT SOT23-3

IRU431-L3TR

Manufacturer Part Number
IRU431-L3TR
Description
IC REGR LDO LV SHUNT SOT23-3
Manufacturer
International Rectifier
Datasheet

Specifications of IRU431-L3TR

Reference Type
Shunt, Adjustable
Voltage - Output
1.24 ~ 15 V
Tolerance
±1%
Number Of Channels
1
Current - Cathode
80µA
Current - Output
10mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
SOT-23-3, TO-236-3, Micro3™, SSD3, SST3
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Voltage - Input
-
Temperature Coefficient
-
Current - Quiescent
-
FEATURES
APPLICATIONS
TYPICAL APPLICATION
PACKAGE ORDER INFORMATION
Rev. 2.0
08/05/03
SOT-23 Packages
Voltage Reference Initial Accuracy (1%)
Low Operating Cathode Current (80mA max)
Unconditionally Stable with only 1mF
Adjustable Output from 1.24V to 15V
0.25V Typical Output Impedance
Pin to Pin Compatible with TLV431
Precision Voltage Reference
Linear Regulator Controller
Secondary Side Controller for the low voltage
power supply applications
Vo = V
Figure 1 - Typical application of the IRU431L as a shunt regulator / voltage reference.
V
IRU431L
IN
REF
3 1 +
(
0 To 70
T
A
R
(°C)
B
R1
R2
)
3-PIN SOT-23 (L3)
LOW -VOLTAGE ADJUSTABLE PRECISION
K (Cathode)
A (Anode)
IRU431LCL3
Ref
www.irf.com
DESCRIPTION
The IRU431L is a three-terminal adjustable shunt regu-
lator that can also be used as a precision voltage refer-
ence. Its output voltage may be set to any value be-
tween V
as shown in the typical application circuit. Other appli-
cations of this device include being used as a merged
amplifier and reference in applications such as a linear
regulator or as the secondary side controller in low volt-
age power supply applications. The IRU431L only re-
quires 80mA maximum quiescent current before regu-
lating, making it ideal as an efficient voltage reference
for battery type applications. The IRU431L has 61%
initial accuracy.
V
R2
R1
REF
REF
5-PIN SOT-23 (L5)
(1.24V) and 15V with two external resistors
IRU431LCL5
SHUNT REGULATOR
C
Data Sheet No. PD94118
O
V
OUT
IRU431L
1

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IRU431-L3TR Summary of contents

Page 1

... TYPICAL APPLICATION IRU431L ( REF R2 Figure 1 - Typical application of the IRU431L as a shunt regulator / voltage reference. PACKAGE ORDER INFORMATION T (° Rev. 2.0 08/05/03 LOW -VOLTAGE ADJUSTABLE PRECISION DESCRIPTION The IRU431L is a three-terminal adjustable shunt regu- lator that can also be used as a precision voltage refer- ence ...

Page 2

... Unless otherwise specified, these specifications apply over T Low duty cycle pulse testing is used which keeps junction and case temperatures equal to the ambient tempera- ture. PARAMETER SYM Reference Voltage V REF IRU431L V V Deviation over full REF(DEV) REF temperature range Ratio of V change to ...

Page 3

... Ref 3 2 Cathode 5 3 Anode BLOCK DIAGRAM Ref + 1.24V Figure 2 - Simplified block diagram of the IRU431L. Rev. 2.0 08/05/03 are de- Where: REF(DEV) ?aV ? unit is ppm/8C REF DT is the rated operating free air temperature of the A device. aV can be positive or negative depending on whether REF minimum V ...

Page 4

... IRU431L APPLICATION INFORMATION Output Voltage Setting The IRU431L can be programmed to any voltages in the range of 1.24 to 15V with the addition of R1 and R2 external resistors according to the following formula REF R2 The IRU431L keeps a constant voltage of 1.240V be- tween the Ref pin and Ground pin. By placing a resistor ...

Page 5

... Thermal Design The IRU431L is offered in the surface mount SOT-23 (L) packages. The SOT-23 package has the maximum power dissipation capability of 150mW at T rating factor of -1.2mW / C. The table below summarizes the maximum power dissi- pation capability of each package versus ambient tem- perature. Ambient Temperature (T ...

Page 6

... IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 Figure 4 - Low cost 3.3V to 2.7V output. Qty Part # 1 IRU431L 2 Elect, 220mF, 6.3V, ECAOJFQ221 1 6.2KV, 5%, SMT 1 118V, 1%, SMT 2 100V, 1%, SMT Use minimum of 1" square copper pad area for load current <4A Visit us at www ...

Page 7

... Rev. 2.0 08/05/03 (L3) SOT-23 Package 3-Pin SYMBOL MIN MAX A 0.890 1.120 A1 0.013 0.100 B 0.370 0.510 C 0.085 0.180 D 2.800 3.040 E 1.200 1.400 e 0.890 1.030 e1 1.780 2.050 H 2.100 2.640 0.55 REF L S 0.450 0.600 NOTE: ALL MEASUREMENTS ARE IN MILLIMETERS. www.irf.com IRU431L ...

Page 8

... IRU431L (L5) SOT-23 Package 5-Pin SYMBOL MIN MAX A 0.90 1.45 A1 0.00 0.15 A2 0.90 1.30 B 0.25 0.50 C 0.09 0.20 D 2.80 3.00 E 2.60 3.00 E1 1.50 1.75 0.95 REF e e1 1.90 REF L 0.35 0. 108 NOTE: ALL MEASUREMENTS ARE IN MILLIMETERS. www.irf.com Rev. 2.0 08/05/03 ...

Page 9

... Rev. 2.0 08/05/03 PIN PARTS COUNT PER TUBE 3 --- 5 --- 1 Visit us at www.irf.com for sales contact information Data and specifications subject to change without notice. 02/01 www.irf.com IRU431L PARTS T & R PER REEL Orientation 3000 Fig A 3000 Fig Feed Direction Figure B TAC Fax: (310) 252-7903 ...

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