STC7800 Datasheet, PDF (1/11 Pages) Suntac Electronic Corp. – 1.0 A Positive Voltage Regulators

1.0 A Positive Voltage
Regulators
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
1.0 A. Although designed primarily as a fixed voltage regulator, these
devices can be used with external components to obtain adjustable
voltages and currents.
• Output Current in Excess of 1.0 A
• No External Components Required
• Internal Thermal Overload Protection
• Internal Short Circuit Current Limiting
• Output Transistor Safe−Area Compensation
• Output Voltage Offered in 2% and 4% Tolerance
• Available in Surface Mount D²PAK, DPAK and Standard
3−Lead Transistor Packages
• NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
• Pb−Free Packages are Available
MAXIMUM RATINGS (T_A = 25°C, unless otherwise noted)
Rating
Symbol
Input Voltage (5.0 − 18 V) V_I
)
Power Dissipation
Thermal Resistance,
Junction−to−Ambient
P_D
R_qJA
Thermal Resistance,
Junction−to−Case
R_qJC
Value
35
40
Unit
Vdc
Internally Limited
W
92 65 Figure 14 °C/W
5.0 5.0
5.0
°C/W
Storage Junction
Temperature Range
T_stg
−65 to +150
°C
Operating Junction
T_J
+150
°C
Temperature
Maximum ratings are those values beyond which device damage can occur.
Maximum ratings applied to the device are individual stress limit values (not
normal operating conditions) and are not valid simultaneously. If these limits are
exceeded, device functional operation is not implied, damage may occur and
reliability may be affected.
NOTE: ESD data available upon request.
STC7800 Series
http://onsemi.com
1
2
3
TO−220
T SUFFIX
CASE 221A
Heatsink surface
connected to Pin 2.
11 ₂
33
4 _{Pin 1. Input}
D²PAK
2. Ground ^{D2T SUFFIX}
3. Output
CASE 936
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
4
12
3
DPAK
DT SUFFIX
CASE 369C
STANDARD APPLICATION
Input
C_in*
0.33 mF
STC78XX
Output
C_O**
A common ground is required between the
input and the 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.
XX, These two digits of the type number
indicate nominal voltage.
* C_in is required if regulator is located an
appreciable distance from power supply
filter.
** C_O is not needed for stability; however,
it does improve transient response. Values
of less than 0.1 mF could cause instability.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 21 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 25 of this data sheet.
1