SI-8050S Allegro Microsystems Inc, SI-8050S Datasheet - Page 3

• Manufacturer Part Number: SI-8050S
• Description: IC, LINEAR VOLTAGE REGULATOR 5V TO-220-5
• Manufacturer: Allegro Microsystems Inc

Specifications of SI-8050S

• Primary Input Voltage: 40V
• Output Voltage Fixed: 5V
• No. Of Outputs: 1
• No. Of Pins: 5
• Output Current: 3A
• Operating Temperature Range: -30°C To +125°C
• Power Dissipation Pd: 18W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

82
Block Diagram
Standard External Circuit
T
SI-8000S Series
a
-P
D
Characteristics
GND
V
V
IN
C
IN
1
1
+
20
15
10
1
–25
5
0
Infinite heatsink
Without heatsink
5
Ambient Operating Temperature T
200 200 2mm
(2.3 C/W)
100 100 2mm
(5.2 C/W)
75 75 2mm
(7.6 C/W)
V
IN
S.S.
S.S
OSC
0
Reg.
SI-8000S
5
GND
25
Comp.
3
3
Amp.
Reset
GND
SW
50
V
With Silicon Grease
Heatsink: Aluminum
OUT
V
REF
OS
75
OCP
4
2
TSD
Drive
D
1
100
L
1
a
( C)
125
+
2
4 V
GND
C
V
2
SW
O
OS
OUT
P
C
L
D
D
1
1,2
1
=V
The efficiency depends on the input voltage and the out-
put current. Thus, obtain the value from the efficiency graph
on page 83 and substitute the percentage in the formula
above.
Thermal design for D
V
V
I
V
: 1000 F
: 150 H
: RK46(Sanken)
O
O
x : Efficiency (%)
O
IN
F
•I
O
: Output voltage
: Input voltage
: Output current
: Diode forward voltage
0.5V(RK46)
100
–1
–V
1
F
must be considered separately.
•I
O
1–
V
V
IN
O