CYStech Electronics Corp.
Spec. No. : C511J3
Issued Date : 2003.03.25
Revised Date :2005.09.15
Page No. : 1/3
LM78D05XJ3 CYStek Product Specification
Three Terminal Positive Voltage Regulators
LM78D05XJ3
These voltage regulators are monolithic integrated circuits designed as fixed
voltage regulators for a wide variety of applications including local, on-card
regulation. These regulators employ internal current limiting, thermal shutdown,
and safe-area compensation. With adequate heatsinking they can deliver output
currents in excess of 1.0A. Although designed primarily as fixed voltage regulator,
these devices can be used with external components to obtain adjustable
voltages and currents.
Maximum Ratings
Rating Symbol Value Unit
Input Voltage VIN 35 V
Output Current Io 1 A
Power Dissipation PD 15 W
Operating Junction
Temperature Range
TJ 0 to +125 ℃
Ordering Information
Device Output Voltage Tolerance Package
LM78D05AJ3 3% TO-252
LM78D05BJ3 5% TO-252
TO-252
CYStech Electronics Corp.
Spec. No. : C511J3
Issued Date : 2003.03.25
Revised Date :2005.09.15
Page No. : 2/3
LM78D05XJ3 CYStek Product Specification
Electrical Characteristics VIN=10V,IOUT=500mA,TJ=25℃,CIN=0.33µF,COUT=0.1µF,
unless otherwise specified
Characteristics Symbol Test Condition Min Typ Max Unit
Output Voltage
LM78D05A
LM78D05B
Vo
4.85
4.75
5.0
5.0
5.15
5.25
V
Output Voltage
LM78D05A
LM78D05B
Vo
5.0mA≤IOUT≤1.0A,PD≤15W
4.85
4.75
5.0
5.0
5.15
5.25
V
Line Regulation ΔVo 7V≤VIN≤25V
8V≤VIN≤25V
-
-
-
-
50
25
mV
Load Regulation ΔVo 5.0mA≤IOUT≤1.5A
250mA≤IOUT≤750mA
-
-
-
-
100
50
mV
Quiescent Current IQ IOUT≤1.0A - - 8 mA
Quiescent Current Change ΔIQ 5.0mA≤IOUT≤1.5A
7V≤VIN≤25V
-
-
-
-
0.5
1.3
mA
Dropout Voltage VD IOUT=1.0A - 2 - V
Peak Output Current IPK 1.7 - - A
CYStech Electronics Corp.
Spec. No. : C511J3
Issued Date : 2003.03.25
Revised Date :2005.09.15
Page No. : 3/3
LM78D05XJ3 CYStek Product Specification
TO-252 Dimension
*: Typical
Inches Millimeters Inches Millimeters DIM Min. Max. Min. Max. DIM Min. Max. Min. Max.
A 0.0177 0.0217 0.45 0.55 G 0.0866 0.1102 2.20 2.80
B 0.0650 0.0768 1.65 1.95 H - *0.0906 - *2.30
C 0.0354 0.0591 0.90 1.50 I - 0.0354 - 0.90
D 0.0177 0.0236 0.45 0.60 J - 0.0315 - 0.80
E 0.2520 0.2677 6.40 6.80 K 0.2047 0.2165 5.20 5.50
F 0.2125 0.2283 5.40 5.80 L 0.0551 0.0630 1.40 1.60
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.
B
A C
E
H
I
J
K
3
2
1
D
F GL
Style: Pin 1.Vin 2.Ground 3.Vout
3-Lead TO-252 Plastic Surface Mount Package
CYStek Package Code: J3
Marking:
78D05