7805A Datasheet, PDF (1/6 Pages) Estek Electronics Co. Ltd – fixed-voltage monolithicintegrated-circuit voltage regulators

7805A
3- Terminal Positive Voltage Regulators
Description
The 7805A can provide local on-card regulation, eliminating the
distribution problems associated with single point regulation. Each employs
internal current limiting, thermal shut-down and safe operating area protection,
making it essen-tially indestructible. If adequate heat sinking is provided, they can
deliver over 1A output current. Although designed primarily as fixed voltage
regulators, these devices can be used with external components to obtain
adjustable voltages and currents.
Features
• Output Current In Excess of 1A
• Output Voltage of 5V
• Internal Short-Circuit Current Limiting & Thermal Overload Protection
• Guaranteed In Extended Temperature Range
Absolute Maximum Ratings (T_A=25°C)
7805AJ Pin Assignment
Tab
3
2
1
3-Lead Plastic TO-252
Package Code: J
Pin 1: V_IN
Pin 2 & Tab: GND
Pin 3: V_OUT
7805AE Pin Assignment
Tab
3-Lead Plastic TO-220AB
Package Code: E
Pin 1: V_IN
Pin 2 & Tab: GND
Pin 3: V_OUT
123
Characteristic
Symbol
Rating
Input Voltage
Power Dissipation
V_IN
40
P_D
Internally limited ^(Note)
Operating Temperature
T_opr
-30 to 85
Storage Temperature
T_stg
-55 to 150
Junction Temperature
T_j
150
Note: (1)T_A=25^oC, , TO-252: 1W, TO-220AB: 2.7W
(2)T_C=25^oC, All package: 10W
Thermal Data
Characteristic
Thermal Resistance Junction-Case
Thermal Resistance Junction-Ambient
Symbol
R_th(j-c)
R_th(j-a)
TO-252
12.5
125
Schematic Diagram & Equivalent Circuit
Unit
V
o_C
o_C
o_C
TO-220AB
12.5
47
Unit
o_C/W
o_C/W
Schematic Diagram
Equivalent Circuit
Input
Series ^Output
VIN
1
Pass
3
Element
Current
Generator
SOA
Protection
Starting
Circuit
Reference
Voltage
Error
Amplifier
Thermal
Protection
GND
2
VOUT
1