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XRP431L Datasheet Preview

XRP431L Datasheet

Precision Adjustable Shunt Regulator

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September 2010
XRP431L
Precision Adjustable Shunt Regulator
Rev. 1.2.0
GENERAL DESCRIPTION
The XRP431L is a three-terminal adjustable
shunt voltage regulator providing a highly
accurate bandgap reference.
The XRP431L acts as an open-loop error
amplifier with a 1.24V temperature
compensation reference. The XRP431L has
thermal stability, wide operating current of
100mA and broad temperature range of -40°C
to 125°C, making it suitable for a variety of
applications which require a low-cost, high
performance solution. The XRP431L tolerance
of 0.5% is proven to be sufficient to overcome
all other errors in the system to virtually
eliminate the need for trimming in the power
supply manufacturer's assembly line and
contribute a significant cost savings. The
output voltage may be adjusted to any value
between VREF and 18 volts with two external
resistors.
The XRP431L is available in RoHS compliant,
“green”/halogen free 5-pin SOT23 package.
APPLICATIONS
Charger
Switching Power Supplies
Graphic Cards
Monitors, VCRs, TVs
FEATURES
0.5% Precise Output Voltage
Adjustable 1.24V to 18V
Wide Operating Current
0.1mA to 100mA
Low Temperature Coefficient
at 20ppm/°C
Extended Temperature Range
-40°C to +125°C
RoHS Compliant “Green”/Halogen Free
5-pin SOT23 Package
TYPICAL APPLICATION DIAGRAM
Fig. 1: XRP431L Application Diagram
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 – Fax. +1 510 668-7001




Exar

XRP431L Datasheet Preview

XRP431L Datasheet

Precision Adjustable Shunt Regulator

No Preview Available !

XRP431L
Precision Adjustable Shunt Regulator
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of
the device at these ratings or any other above those
indicated in the operation sections of the specifications
below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect
reliability.
Cathode-Anode Voltage VKA ..................................... 20V
Operating Cathode Current (cont.) IKA ................... 100mA
Reference Input Current Range IREF.........................10mA
Power Dissipation (Cont. 25°C) PD ....................... 770mW
Junction Temperature .......................................... 150°C
Storage Temperature TSTG........................ -65°C to 150°C
ESD Rating (HBM - Human Body Model) .................... 2kV
OPERATING RATINGS
Cathode-Anode Voltage VKA ....................................<18V
Operating Cathode Current (cont.) IKA ................ <100mA
Ambient Temperature Range ....................-40°C to 125°C
Thermal Resistance θJC (SOT23-5) ................... 84.8˚C/W
ELECTRICAL SPECIFICATIONS
Specifications with standard type are for an Operating Ambient Temperature of TA = 25°C only; limits applying over the full
Operating Ambient Temperature range are denoted by a “•”. Minimum and Maximum limits are guaranteed through test,
design, or statistical correlation. Typical values represent the most likely parametric norm at TA = 25°C, and are provided
for reference purposes only.
Parameter
Reference Voltage
Min.
1.234
ΔVREF with temperature TC
Ratio of change in VREF to
Cathode Voltage ΔVREF / ΔVKA
Reference Input Current IREF
IREF Temperature Deviation ΔIREF
Minimum IKA for Regulation
IKA(MIN)
-1.5
Off State Leakage IKA(OFF)
Dynamic Output Impedance ZKA
Typ.
1.240
2
3
4
-0.5
0.15
0.1
55
40
10
0.05
Max.
1.246
10
10
15
0.4
0.4
80
100
50
0.15
Units
V
mV
mV
mV
mV/V
µA
µA
µA
nA
nA
Conditions
Test circuit 1
VKA=VREF, IKA=10mA
Test circuit 1
VKA=VREF, IKA=10mA, 0°C TA 70°C
Test circuit 1
VKA=VREF, IKA=10mA, -40°C TA 85°C
Test circuit 1
VKA=VREF, IKA=10mA, -40°C TA 125°C
Test circuit 2
VREF ≤ ΔVKA 16V, IKA=10mA
Test circuit 2
IKA=10mA, R1=10k, R2=
Test circuit 2
IKA=10mA, R1=10k, R2=
Test circuit 1
VKA=VREF
Test circuit 3
VKA=18V, VREF=0V
Test circuit 3
VKA=6V, VREF=0V
Test circuit 1
VKA=VREF, fZ1KHz, IKA=1 to 100mA
© 2010 Exar Corporation
2/8
Rev. 1.2.0


Part Number XRP431L
Description Precision Adjustable Shunt Regulator
Maker Exar
Total Page 8 Pages
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