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CYStech Electronics Corp.
Spec. No. : C519M3
Issued Date : 2003.04.02
Revised Date : . .
Page No. : 1/4
PL78L12M3
CYStek Product Specification
Low Current Positive Voltage Regulator
PL78L12XM3
Description
The PL78L12XM3 series of surface mount regulators are easy-to-use devices suitable for
multitude of applications that require a regulated supply of up to 100mA. These regulators feature
internal current limiting and thermal shutdown, making them remarkably rugged. No external
components are required with the PL78L12XM3 devices in many applications.
These devices offer a substantial performance advantage over the traditional zener diode resistor
combination, as output impedance and quiescent current are substantially reduced.
Features:
Wide Range Of Available, Fixed Output Voltages
Internal Short-Circuit Current Limiting
Internal Thermal Overload Protection
No External Components Required
Absolute Maximum Ratings
(Ta=25
C)
Input Voltage ....................................................................................................................... 35 V
Total Power Dissipation .................................................................................... Internally limited
Operating Temperature Range .......................................................................... 0
C to +125
C
Maximum Junction Temperature ..................................................................................... 125
C
Storage Temperature Range .......................................................................... -55
C to +150
C
Lead Temperature (Soldering 10S) ................................................................................. 260
C
Typical Application
Schematic Diagram
PL78L12
Vout
Vin
1
3
2
C1 C2
A common ground is required between the
input and the output
voltages. The
input
voltage must remain typically
2.0V
above
the output voltage even during the low point
on the input ripple
voltage.
Note : C1 and C2 are required if regulator is located
far from power supply filter and load, or oscillation
may induced on the loop.
576
3.41K
3.89K
7.8K
2.84K
13K
5pF
2.23K
GND
1.5K
1.9K
100
100
5K
5.7K
Vout
Vin
SOT-89
CYStech Electronics Corp.
Spec. No. : C519M3
Issued Date : 2003.04.02
Revised Date : . .
Page No. : 2/4
PL78L12M3
CYStek Product Specification
Electrical Characteristics
Vin=19V, Io=40mA, Tj=25
C Cin=0.33uF, Cout=0.1uF (unless otherwise noted)
PL78L12A
Symbol Parameter
Conditions
Min Typ Max
Units
Tj=25
C
11.64 12 12.36
14.5V
Vin
27V
1mA
Io
40mA
11.4 12 12.6
Vo Output
Voltage
1mA
Io
70mA
11.4 12 12.6
V
14.5V
Vin
27V
- -
180
Vo
Line Regulation
16V
Vin
27V
- -
110
mV
1mA
Io
100mA
- -
100
Vo
Load Regulation
1mA
Io
40mA
- - 50
mV
IQ Quiescent
Current Ta=25
C
- - 5 mA
16V
Vin
27V
- - 1
IQ
Quiescent Current
Change
1mA
Io
40mA
-
0.1
mA
Vn
Output Noise Voltage Ta=25
C
- 80 - uV
Vin /
Vout Ripple Rejection
15V
Vin
25V, f=120Hz
40 54 - dB
Ipk
Peak Output Current Ta=25
C
- 140 - mA
VD Dropout
Voltage Ta=25
C
- 1.7 - V
PL78L12B
Symbol Parameter
Conditions
Min Typ Max
Units
Tj=25
C
11.4 12 12.6
14.5V
Vin
27V
1mA
Io
40mA
11.4 12 12.6
Vo Output
Voltage
1mA
Io
70mA
11.4 12 12.6
V
14.5V
Vin
27V
- -
180
Vo
Line Regulation
16V
Vin
27V
- -
110
mV
1mA
Io
100mA
- -
100
Vo
Load Regulation
1mA
Io
40mA
- - 50
mV
IQ Quiescent
Current Ta=25
C
- - 5 mA
16V
Vin
27V
- - 1
IQ
Quiescent Current
Change
1mA
Io
40mA
-
0.1
mA
Vn
Output Noise Voltage Ta=25
C
- 80 - uV
Vin /
Vout Ripple Rejection
15V
Vin
25V, f=120Hz
40 54 - dB
Ipk
Peak Output Current Ta=25
C
- 140 - mA
VD Dropout
Voltage Ta=25
C
- 1.7 - V
CYStech Electronics Corp.
Spec. No. : C519M3
Issued Date : 2003.04.02
Revised Date : . .
Page No. : 3/4
PL78L12M3
CYStek Product Specification
Characteristic Curves
Dropout Characteristics
1
2
3
4
5
6
0
1
2
3
4
5
6
7
8
9 10
Input Voltage(V)
Output
Voltage(V)
Io=100mA
Io=1mA
Io=40mA
Maximum Average Power Dissipation
100
1000
10000
25
50
75
100
125
150
Ambient Temperature (C)
Power Dissipation (mW)
Quiescent Current
0
0.5
1
1.5
2
2.5
3
3.5
4
0
5
10
15
20
25
30
35
Input Voltage(V)
Quiescent Current(mA)
Quiescent Current
2.6
2.8
3
3.2
3.4
0
50
100
150
Ambient Temperature(C)
Quiescent Current(mA)
CYStech Electronics Corp.
Spec. No. : C519M3
Issued Date : 2003.04.02
Revised Date : . .
Page No. : 4/4
PL78L12M3
CYStek Product Specification
78L05
SOT-89 Dimension
*: Typical
Inches Millimeters
Inches Millimeters
DIM
Min. Max. Min. Max.
DIM
Min. Max. Min. Max.
A 0.1732
0.1811 4.40 4.60 F 0.0583
0.0598 1.48 1.527
B 0.1594
0.1673 4.05 4.25 G 0.1165 0.1197 2.96 3.04
C 0.0591
0.0663 1.50 1.70 H 0.0551 0.0630 1.40 1.60
D 0.0945
0.1024 2.40 2.60 I 0.0138 0.0161 0.35 0.41
E 0.01417
0.0201 0.36 0.51
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.
3-Lead SOT-89 Plastic
Surface Mounted Package
CYStek Package Code: M3
E
F
G
C
B
A
I
D
H
3
2
1
Marking:
Style: Pin 1. Vout 2. GND 3. Vin
78L12
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