CYStech Electronics Corp.
100mA Low Dropout Voltage Regulators
Spec. No. : C503A3
Issued Date : 2003.03.21
Revised Date :
Page No. : 1/4
PL2950-XXA3
•
Battery powered systems
•
Cordless telephones
•
Radio control systems
•
Portable/Palm top/Notebook computers
•
Portable consumer equipment
•
Portable Instrumentation
•
Avionics
•
Automotive Electronics
•
SMPS Post-Regulator
•
Voltage Reference
TO-92
FEATURES
•
High accuracy output voltage
•
Guaranteed 100mA output
•
Very low quiescent current
•
Low dropout voltage
•
Extremely tight load and line regulation
•
Very low temperature coefficient
•
Needs only 1µF for stability
•
Error Flag warns of output dropout
•
Logic-Controlled electronic shutdown
•
Output programmable from 1.24 to 29V
APPLICATIONS
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 (75µA 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
Power Dissipation
Internally Limited
Lead Temperature
260℃
(Soldering, 5 seconds)
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
Device Selection Guide
Vout
, Volts
2.85*
3.0
3.3
5.0
Device
PL2950-2.85
PL2950-3.0
PL2950-3.3
PL2950
* - other versions are also available
Vout = 2.0V to 5.0V. Please consult factory for
more information
PL2950A3
CYStek Product Specification
CYStech Electronics Corp.
Spec. No. : C503A3
Issued Date : 2003.03.21
Revised Date :
Page No. : 2/4
ELECTRICALCHARACTERISTICS (at Ta =25℃, =15V;unless otherwise noted
)
Parameter
Output Voltage
Conditions(Note 2)
Min
0.985∣Vo∣
0.98∣Vo∣
0.976∣Vo∣
-
-
-
-
-
-
-
-
-
Typ
Vo
Vo
50
0.04
0.1
50
380
75
8
110
160
0.05
430
160
100
Max
1.015∣Vo∣
1.02∣Vo∣
1.024∣Vo∣
150
0.4
0.3
80
450
120
12
170
200
0.2
-
Units
V
-25℃≤TJ≤85℃
Full Operating Temperature
Output Voltage
100μA≤I
L
≤100mA,T
J
≤T
JMAX
Output Voltage Temperature (Note 1)
Coefficient
Line Regulation(Note 3)
V
O
+1V≤Vin≤30V
Load Regulation(Note 3)
100μA≤I
L
≤100mA
Dropout Voltage(Note 4)
I
L
=100μA
I
L
=100mA
Ground Current
I
L
=100μA
I
L
=100mA
Dropout Ground Current
Vin=Vo-0.5V,I
L
=100μA
Current Limit
Vout=0
Thermal Regulation
Output Noise, 10Hz to
C
L
=1μF
100KHz
C
L
=200μF
C
L
=3.3μF
ppm/℃
%
%
mV
ΜA
mA
μA
mA
%/W
μVrms
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
=100μA and C
L
=1μF.
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
Vo
1μF
GROUND
PL2950A3
CYStek Product Specification
CYStech Electronics Corp.
TO-92 Dimension
A
B
1
2
3
Spec. No. : C503A3
Issued Date : 2003.03.21
Revised Date :
Page No. : 3/4
α
2
Marking:
α
3
C
PL431
2950
C
D
H
I
E
F
G
α
1
Style: Pin 1.Output 2.Ground 3.Input
3-Lead TO-92 Plastic Package
CYStek Package Code: A3
*: Typical
DIM
A
B
C
D
E
F
Inches
Min.
Max.
0.1704 0.1902
0.1704 0.1902
0.5000
-
0.0142 0.0220
-
*
0.0500
0.1323 0.1480
Millimeters
Min.
Max.
4.33
4.83
4.33
4.83
12.70
-
0.36
0.56
-
*
1.27
3.36
3.76
DIM
G
H
I
α1
α2
α3
Inches
Min.
Max.
0.0142 0.0220
-
*
0.1000
-
*
0.0500
-
*
5°
-
*
2°
-
*
2°
Millimeters
Min.
Max.
0.36
0.56
-
*
2.54
-
*
1.27
-
*
5°
-
*
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.
PL2950A3
CYStek Product Specification
嵌入式系统
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