STC78L00 Suntac Electronic, STC78L00 Datasheet

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STC78L00

Manufacturer Part Number
STC78L00
Description
100 mA Positive Oltage Regulators
Manufacturer
Suntac Electronic
Datasheet
100 mA Positive Voltage
Regulators
inexpensive, easy−to−use devices suitable for a multitude of
applications that require a regulated supply of up to 100 mA. Like
their higher powered STC7800
regulators feature internal current limiting and thermal shutdown
making them remarkably rugged. No external components are
required with the STC78L00 devices in many applications.
traditional zener diode−resistor combination, as output impedance
and quiescent current are substantially reduced.
Features
The STC78L00 Series of positive voltage regulators are
These devices offer a substantial performance advantage over the
and Control Changes
Wide Range of Available, Fixed Output Voltages
Low Cost
Internal Short Circuit Current Limiting
Internal Thermal Overload Protection
No External Components Required
Complementary Negative Regulators Offered (STC79L00 Series)
Pb−Free Packages are Available
NCV Prefix for Automotive and Other Applications Requiring Site
15k
Z1
Q1
3.8k
1.2k
420
Figure 1. Representative Schematic Diagram
Q2
Q4
1.9k
Q3
Q6
Q7
C
1.0k
19k
Q5
Q8
and
2.2k
STC78M00 Series cousins, these
Q9
Q10
Q11
5.0k
Q12
0−25k
3.0
2.85k
1
Ground
Output
Input
See detailed ordering and shipping information in the package
dimensions section on page 9 of this data sheet.
output voltages. The input voltage must remain typically
2.0 V above the output voltage even during the low point
on the input ripple voltage.
* C
** C
A common ground is required between the input and the
distance from power supply filter.
transient response.
in
O
is required if regulator is located an appreciable
is not needed for stability; however, it does improve
0.33mF
Input
ORDERING INFORMATION
C
in
1
*
Figure 2. Standard Application
2
3
Pin: 1. Output
STC78L00 Series
STC78LXX
2. Ground
3. Input
MC78LXXA
C
P
TO−92
C
O
Output
**

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STC78L00 Summary of contents

Page 1

... Positive Voltage Regulators The STC78L00 Series of positive voltage regulators are inexpensive, easy−to−use devices suitable for a multitude of applications that require a regulated supply 100 mA. Like their higher powered STC7800 and regulators feature internal current limiting and thermal shutdown making them remarkably rugged. No external components are required with the STC78L00 devices in many applications ...

Page 2

... +25° Dropout Voltage (T = +25°C) J NOTE −40° +125°C. Guaranteed by design. NCV prefix is for automotive and other applications requiring low high site and change control. STC78L00 Series Rating = 0. Symbol V O Reg ...

Page 3

... Output Noise Voltage = +25° ≤ f ≤ 100 kHz Ripple Rejection ( mA 120 Hz ≤ V ≤ +25° Dropout Voltage (T = +25°C) J STC78L00 Series = 0.33 mF 0.1 mF, − 40°C < mA Symbol V O Reg line Reg ...

Page 4

... Output Noise Voltage = +25° ≤ f ≤ 100 kHz Ripple Rejection ( mA 120 Hz, 18.5 V ≤ V ≤ 28 +25° Dropout Voltage (T = +25°C) J STC78L00 Series = 0.33 mF 0.1 mF, − 40°C < mA Symbol V O Reg line Reg ...

Page 5

... Output Noise Voltage = +25° ≤ f ≤ 100 kHz Ripple Rejection ( mA 120 Hz ≤ V ≤ +25° Dropout Voltage (T = +25°C) J STC78L00 Series = 0.33 mF 0.1 mF, 0°C < mA Symbol V O Reg line Reg ...

Page 6

... Ambient Temperature 10,000 No Heatsink 1000 100 R = 200°C/W qJA P to 25°C = 625 mW D(max 100 T , AMBIENT TEMPERATURE (°C) A Figure 7. Maximum Average Power Dissipation versus Ambient Temperature − TO−92 Type Package STC78L00 Series 2.5 2.0 1.5 1.0 = 100 mA O Dropout of Regulation is 0.5 defined as when 0 8 5.0 4.0 3.0 2.0 1.0 0 100 ...

Page 7

... Design Considerations The STC78L00 Series of fixed voltage regulators are designed with Thermal Overload Protection that shuts down the circuit when subjected to an excessive power overload condition. Internal Short Circuit Protection limits the maximum current the circuit will pass. In many low current applications, compensation capacitors are not required ...

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