CYStech Electronics Corp.
Three Terminal Medium Current Positive
Voltage Regulators
Spec. No. : C520A3
Issued Date : 2003.03.27
Revised Date :2006.05.29
Page No. : 1/4
TO-92
LM78M05XA3
Description
These regulators employ internal current-limiting and thermal-shutdown,
making them essentially indestructible. They can deliver up to 500mA
output current, if the case temperature can be kept at Tc=25°C.
They are intended as fixed voltage regulators in a wide range of applications including local (on-card)
regulation for elimination of noise and distribution problems associated with single-point regulation. In
addition, they can be used with power pass elements to make high-current voltage regulators. The
LM78M05XA3 used as a Zener diode/resistor combination replacement, offers an effective output
impedance improvement of typically two orders of magnitude, along with lower quiescent current and lower
noise.
Absolute Maximum Ratings
(Ta=25°C)
•
Input Voltage………………………………………………………………………………………………. 30 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
Vin
Vin
LM78M05
Vout
5k
5.7kΩ
100
1.5kΩ
1.9kΩ
5p
3.41kΩ
3.89kΩ
7.8kΩ
13kΩ
2.23kΩ
Vout
100
C1
C2
576Ω
Note:
C1 and C2 are required if regulator is
located far from power supply filter
and load, or oscillation may induced
on the loop.
2.84kΩ
Gnd
LM78M05XA3
CYStek Product Specification
CYStech Electronics Corp.
Ordering Information
Device
LM78M05AA3
LM78M05BA3
LM78M05CA3
Output Voltage Range
4.8V〜4.9V
4.9V〜5.1V
5.1V〜5.2V
Spec. No. : C520A3
Issued Date : 2003.03.27
Revised Date :2006.05.29
Page No. : 2/4
Electrical Characteristics
Vin=10V, Iout=350mA, P
D
≤5W,0°C≤Tj≤125°C,
Cin=0.33uF, Cout=0.1uF (unless otherwise noted)
Symbol
Vo
∆Vo
∆Vo
IQ
∆IQ
Vn
RR
VD
IOS
IMAX
TCVo
Parameter
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current
Change
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Output Short Circuit
Current
Peak Output Current
Temperature Coefficient of
Output Voltage
Conditions
Tj=25°C
5mA≤Io≤350mA and
7V≤Vin≤20V
Tj=25°C, 7V≤Vin≤25V
Tj=25°C, 8V≤Vin≤25V
Tj=25°C, 5mA≤Io≤500mA
Tj=25°C, 5mA≤Io≤200mA
Tj=25°C
5mA≤Io≤350mA
8V≤Vin≤25V,Io=200mA
Ta=25°C, 10Hz≤f≤10KHz
8V≤Vin≤18V,Io=300mA,
f=120Hz
Tj=25°C,Io=500mA
Tj=25
℃
,Vin=30V
Tj=25
℃
Io=5mA
LM78M05A
Min
Typ
Max
4.80
-
4.90
4.75
-
-
-
-
-
-
-
-
62
-
-
3
-
15
-
3.2
-
-
40
78
2
300
700
-1.1
5.25
100
50
100
50
6
0.5
0.8
100
-
-
Units
V
mV
mV
mA
mA
uV
dB
V
mA
mA
mV/
℃
LM78M05XA3
CYStek Product Specification
CYStech Electronics Corp.
Symbol
Vo
∆Vo
∆Vo
IQ
∆IQ
Vn
RR
VD
IOS
IMAX
TCVo
Parameter
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current
Change
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Output Short Circuit
Current
Peak Output Current
Temperature Coefficient of
Output Voltage
Conditions
Tj=25°C
5mA≤Io≤350mA and
7V≤Vin≤20V
Tj=25°C, 7V≤Vin≤25V
Tj=25°C, 8V≤Vin≤25V
Tj=25°C, 5mA≤Io≤500mA
Tj=25°C, 5mA≤Io≤200mA
Tj=25°C
5mA≤Io≤350mA
8V≤Vin≤25V,Io=200mA
Ta=25°C, 10Hz≤f≤10KHz
8V≤Vin≤18V,Io=300mA,
f=120Hz
Tj=25°C,Io=500mA
Tj=25
℃
,Vin=30V
Tj=25
℃
Io=5mA
Spec. No. : C520A3
Issued Date : 2003.03.27
Revised Date :2006.05.29
Page No. : 3/4
LM78M05B
Min
Typ
Max
4.90
5.00
5.1
4.75
-
-
-
-
-
-
-
-
62
-
-
3
-
15
-
3.2
-
-
40
78
2
300
700
-1.1
5.25
100
50
100
50
6
0.5
0.8
100
-
-
Units
V
mV
mV
mA
mA
uV
dB
V
mA
mA
mV/
℃
Symbol
Vo
∆Vo
∆Vo
IQ
∆IQ
Vn
RR
VD
IOS
IMAX
TCVo
Parameter
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current
Change
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Output Short Circuit
Current
Peak Output Current
Temperature Coefficient of
Output Voltage
Conditions
Tj=25°C
5mA≤Io≤350mA and
7V≤Vin≤20V
Tj=25°C, 7V≤Vin≤25V
Tj=25°C, 8V≤Vin≤25V
Tj=25°C, 5mA≤Io≤500mA
Tj=25°C, 5mA≤Io≤200mA
Tj=25°C
5mA≤Io≤350mA
8V≤Vin≤25V,Io=200mA
Ta=25°C, 10Hz≤f≤10KHz
8V≤Vin≤18V,Io=300mA,
f=120Hz
Tj=25°C,Io=500mA
Tj=25
℃
,Vin=30V
Tj=25
℃
Io=5mA
LM78M05C
Min
Typ
Max
5.10
-
5.2
5.05
-
-
-
-
-
-
-
-
62
-
-
3
-
15
-
3.2
-
-
40
78
2
300
700
-1.1
5.25
100
50
100
50
6
0.5
0.8
100
-
-
Units
V
mV
mV
mA
mA
uV
dB
V
mA
mA
mV/
℃
LM78M05XA3
CYStek Product Specification
CYStech Electronics Corp.
TO-92 Dimension
α
2
Spec. No. : C520A3
Issued Date : 2003.03.27
Revised Date :2006.05.29
Page No. : 4/4
A
B
1
2
3
α
3
78M05
C
D
H
I
E
F
G
α
1
Style: Pin 1.Vout 2.GND 3.Vin
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.
LM78M05XA3
CYStek Product Specification
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