CYStech Electronics Corp.
Spec. No. : C503A3
Issued Date : 2003.03.21
Revised Date :
Page No. : 1/4
PL2950A3
CYStek Product Specification
100mA Low Dropout Voltage Regulators
PL2950-XXA3
FEATURES APPLICATIONS
Battery powered systems
High accuracy output voltage
Cordless telephones
Guaranteed 100mA output
Radio control systems
Very low quiescent current
Portable/Palm top/Notebook computers
Low dropout voltage
Portable consumer equipment
Extremely tight load and line regulation
Portable Instrumentation
Very low temperature coefficient
Avionics
Needs only 1
F for stability
Automotive Electronics
Error Flag warns of output dropout
SMPS Post-Regulator
Logic-Controlled electronic shutdown
Voltage Reference
Output programmable from 1.24 to 29V
PRODUCT DESCRIPTION
ThePL2950-XX is a low power voltage regulator. This device excellent choice for use in battery powered application such as cordless
telephone, radio control systems, and portable computers.
The PL2950-XX features very low quiescent current (75
A Typ.) and very low drop output voltage (Typ. 40mV at light load and 380mV
at 100mA). This includes a tight initial tolerance of 0.5% typ., extremely good load and line regulation of 0.05% typ., and very low output
temperature coefficient, making the PL2950-XX useful as a low-power voltage reference.
The error flag output feature is used as power-on reset for warn of a low output voltage, due to following batteries on input. Other feature
is the logic-compatible shutdown input which enable the regulator to be switched on and off.
The PL2950-XX is offered in 3-pin TO-92 package compatible with other fixed regulator.
Absolute Maximum Ratings
Device Selection Guide
* - other versions are also available
Vout = 2.0V to 5.0V. Please consult factory for
more information
Power Dissipation
Internally Limited
Lead Temperature
(Soldering, 5 seconds)
260
Storage Temperature Range
-65
C to+150
C
Operating Junction Temperature Range -55
C to +150
C
Input Supply Voltage
-0.3 to +30V
Feedback Input Voltage
-1.5 to +30V
Shutdown Input Voltage
-0.3 to +30V
Error Comparator Output
-0.3 to +30V
Vout
, Volts
Device
2.85* PL2950-2.85
3.0 PL2950-3.0
3.3 PL2950-3.3
5.0 PL2950
TO-92
CYStech Electronics Corp.
Spec. No. : C503A3
Issued Date : 2003.03.21
Revised Date :
Page No. : 2/4
PL2950A3
CYStek Product Specification
ELECTRICALCHARACTERISTICS (at Ta =25, =15V;unless otherwise noted
)
Parameter
Conditions(Note 2)
Min
Typ
Max
Units
Output Voltage
-25TJ85
Full Operating Temperature
0.985Vo
0.98Vo
Vo
1.015Vo
1.02Vo
Output Voltage
100AI
L
100mA,T
J
T
JMAX
0.976Vo
Vo
1.024Vo
V
Output Voltage Temperature
Coefficient
(Note 1)
-
50
150
ppm/
Line Regulation(Note 3)
V
O
+1VVin30V
- 0.04 0.4 %
Load Regulation(Note 3)
100AI
L
100mA
- 0.1 0.3 %
Dropout Voltage(Note 4)
I
L
=100A
I
L
=100mA
- 50
380
80
450
mV
Ground Current
I
L
=100A
I
L
=100mA
- 75
8
120
12
A
mA
Dropout Ground Current
Vin=Vo-0.5V,I
L
=100A
- 110
170 A
Current Limit
Vout=0
-
160
200
mA
Thermal Regulation
-
0.05
0.2
%/W
Output Noise, 10Hz to
100KHz
C
L
=1F
C
L
=200F
C
L
=3.3F
- 430
160
100
-
Vrms
Note 1:Output or reference voltage temperature coefficients defined as the worse case voltage change divided by the
total temperature range.
Note 2:Unless otherwise specified all limits guaranteed for T
J
=25,Vin=Vo+1V,I
L
=100A and C
L
=1F.
Note 3.Regulations is measured at constant junction temperature, using pulse testing with a low duty cycle.
Changes in output voltage due to heating effects are covered under the specification for thermal regulation.
Note 4:Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below
its nominal value measured at 1V differential. At very low values of programmed output voltage, the mini-
mum input supply voltage of 2V(2.3V over temperature) must be taken into account.
Block Diagram and Typical Application
INPUT
OUTPUT
GROUND
Vo
+
1F
CYStech Electronics Corp.
Spec. No. : C503A3
Issued Date : 2003.03.21
Revised Date :
Page No. : 3/4
PL2950A3
CYStek Product Specification
TO-92 Dimension
*: Typical
Inches Millimeters
Inches Millimeters
DIM
Min. Max. Min. Max.
DIM
Min. Max. Min. Max.
A 0.1704
0.1902 4.33 4.83 G 0.0142 0.0220 0.36 0.56
B 0.1704
0.1902 4.33 4.83 H
-
*
0.1000 -
*
2.54
C 0.5000 - 12.70 -
I
-
*
0.0500 -
*
1.27
D 0.0142
0.0220 0.36 0.56
1
-
*
5
-
*
5
E -
*
0.0500 -
*
1.27
2
-
*
2
-
*
2
F 0.1323
0.1480 3.36 3.76
3
-
*
2
-
*
2
Notes:
1.Controlling dimension: millimeters.
2.Maximum lead thickness includes lead finish thickness, and minimum lead thickness is the minimum thickness of base material.
3.If there is any question with packing specification or packing method, please contact your local CYStek sales office.
Material:
Lead: 42 Alloy ; solder plating
Mold Compound: Epoxy resin family, flammability solid burning class: UL94V-0
Important Notice:
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of CYStek.
CYStek reserves the right to make changes to its products without notice.
CYStek semiconductor products are not warranted to be suitable for use in Life-Support Applications, or systems.
CYStek assumes no liability for any consequence of customer product design, infringement of patents, or application assistance.
C
PL431
Marking:
3
1
A
D
B
C
I
1
E
F
2
3
G
H
2
Style: Pin 1.Output 2.Ground 3.Input
3-Lead TO-92 Plastic Package
CYStek Package Code: A3
2950
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