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
