IFX2931
Low Dropout Linear Voltage Regulator
IFX2931GV50
IFX2931GV33
Data Sheet
Rev. 1.13, 2011-02-10
Standard Power
Low Dropout Linear Voltage Regulator
IFX2931
1
Features
•
•
•
•
•
•
•
•
•
Overview
Very Low Quiescent Current
Output Current in Excess of 100mA
Input-Output Differential Less than 0.6V for 5V-Version
Reverse Battery Protection
Output Current Limitation
Overtemperature Shutdown
Mirror-Image Insertion Protection
Needs only small Output Capacitor
C
OUT
= 10 µF
Green Product (RoHS compliant)
PG-DSO-8
For automotive and transportation applications, please refer to the Infineon TLE and TLF voltage regulator series.
General Description
The IFX2931 is a positive voltage regulator with a very low quiescent current of 1mA or less when supplying 10mA
loads. The IFX2931GV50 also offers an extremely low dropout voltage required for proper regulation: 0.2V for
output currents of 10mA. Therefore the IFX2931 is the ideal supply for standby power systems. It is suitable for
e.g. memory standby circuits, CMOS and other low power processor power supplies. It certainly can also be used
for any system demanding as much as 100mA of output current. The IFX2931 is protected from reverse polarity
condition and can withstand input voltages of 28 V continously. The IFX2931 cannot be harmed by temporary
mirror-image insertion. Additional protection features such as output current limitation and overtemperature
shutdown are also implemented. The IFX2931 comes in an 8-lead SMD package (PG-DSO-8).
Type
IFX2931GV50
IFX2931GV33
Data Sheet
Package
PG-DSO-8
PG-DSO-8
2
Marking
IFX2931
2931V33
Rev. 1.13, 2011-02-10
IFX2931
Block Diagram
2
Block Diagram
Temperature
Sensor
Saturation
Control and
Protection
Circuit
1
Control
Amplifier
Input
8
Output
Buffer
Adjustment
Bandgap
Reference
2,3,6,7
GND
AEB01527
Figure 1
Block Diagram
Data Sheet
3
Rev. 1.13, 2011-02-10
IFX2931
Pin Configuration
3
3.1
Pin Configuration
Pin Assignment
PG-DSO-8
OUT
GND
GND
n.c.
1
2
3
4
8
7
6
5
PINCONFIG_DSO-8.VSD
IN
GND
GND
n.c.
Figure 2
Pin Configuration
3.2
Pin
1
Pin Definitions and Functions IFX2931GV50, IFX2931GV33 (PG-DSO-8)
Symbol
OUT
Function
Output
block to GND with a capacitor close to the IC terminals, respecting the values given
for its capacitance
C
OUT
and ESR in
“Typical Performance Characteristics” on
Page 9
Ground
not connected
Input
for compensating line influences, a capacitor to GND close to the IC terminals is
recommended
2,3,6,7
4,5
8
GND
n.c.
IN
Data Sheet
4
Rev. 1.13, 2011-02-10
IFX2931
General Product Characteristics
4
4.1
General Product Characteristics
Absolute Maximum Ratings
Absolute Maximum Ratings
1)
T
j
= -40
C
to 125
C;
all voltages with respect to ground, positive current flowing into pin
(unless otherwise specified)
Pos.
Input
4.1.1
Output
4.1.2
4.1.3
4.1.4
4.1.5
Voltage
Junction Temperature
Storage Temperature
ESD Resistivity to GND
Voltage
Parameter
Symbol
Limit Values
Min.
Max.
28
28
125
150
2
V
V
C
C
kV
–
–
–
–
HBM
2)
Unit
Conditions
V
I
V
OUT
T
j
T
stg
V
ESD
-30
-0.3
-40
-55
-2
Temperatures
ESD Susceptibility
1) Not subject to production test, specified by design.
2) ESD susceptibility, HBM according to EIA/JESD 22-A114B
Note: Stresses above the ones listed here may cause permanent damage to the device. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Note: Integrated protection functions are designed to prevent IC destruction under fault conditions described in the
data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are
not designed for continuous repetitive operation.
4.2
Pos.
4.2.1
4.2.2
4.2.3
Functional Range
Parameter
Input Voltage
Junction Temperature
Symbol
Min.
Limit Values
Max.
28
26
125
V
V
C
IFX2931GV50
IFX2931GV33
–
6
4.4
-40
Unit
Conditions
V
I
T
j
Note: Within the functional range the IC operates as described in the circuit description. The electrical
characteristics are specified within the conditions given in the related electrical characteristics table.
Data Sheet
5
Rev. 1.13, 2011-02-10
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