Document
CYStech Electronics Corp.
Low Current Positive Voltage Regulator
LM78LXXM3
Spec. No. : C515M3 Issued Date : 2007.10.04 Revised Date : 2017.11.13 Page No. : 1/11
SOT-89
OG I
Description
The LM78LXXM3 series of positive regulators are available in the SOT-89 package and with 5V, 6V, 8V, 9V, 10V, 12V, 15V, 18V and 24V fixed output voltages, making it useful in a wide range of applications. These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation. Each type employs internal current limiting, thermal shut-down and safe operating area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 200mA output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents. LM78LXXM3 is characterized for operation from -40℃ to +125℃.
Features:
• Internal Short-Circuit Current Limiting • Internal Thermal Overload Protection • No External Components Required • Pb-free lead plating and halogen-free package
Typical Application
Schematic Diagram
Vin
3
C1
LM78LXX
2
Vout
1
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
13K 2.84K
Vin
5K
5.7K
100 100
5pF
1.5K 1.9K Vout
2.23K
GND
LM78LXXM3
CYStek Product Specification
CYStech Electronics Corp.
Spec. No. : C515M3 Issued Date : 2007.10.04 Revised Date : 2017.11.13 Page No. : 2/11
Ordering Information
Device LM78LXXM3-A-T2-G LM78LXXM3-B-T2-G
Output Voltage Tolerance ±3% ±5%
Package
Shipping
SOT-89 (Pb-free lead plating and 1000 pcs / Tape & Reel
halogen-free package)
Environment friendly grade : S for RoHS compliant products, G for RoHS compliant and green compound products Packing spec, T2 :1000 pcs/tape & reel, 7” reel ; TB : 2000 pcs/ tape & box
Product rank, zero for no rank products
Product name
Absolute Maximum Ratings
Parameter
Input Voltage
Output Current Operating Junction Temperature Range Storage Temperature Range Power Dissipation Thermal Resistance, Junction to Ambient Thermal Resistance, Junction to Case
LM78L05 ~ 10 LM78L12 ~18 LM78L24
Ratings 30 35 40 200
-40 ~ +125 -65 ~ +150
500 (Note) 250 (Note) 30
Note : When mounted on minimum pad size and tested in free air condition, without heat sinking.
Unit
V
mA °C mW °C/W
Electrical Characteristics
LM78L05 (Vin=10V, Io=80mA, Tj=25°C, Cin=0.33uF, Cout=0.1uF ,unless otherwise noted) (Note 1)
Symbol
Parameter
Min Typ Max
Conditions
A-rank(3%)
Vo
Output Voltage
B-rank(5%)
ΔVo
Line Regulation
4.85 5 5.15 Vin=10V, Io=80mA,Tj=25°C 7V≤Vin≤20V, 1mA≤Io≤80mA
4.75 - 5.25 Vin=10V, 1mA≤Io≤140mA (Note 2)
- 32 .