SI-8005Q Allegro Microsystems Inc, SI-8005Q Datasheet - Page 2

• Manufacturer Part Number: SI-8005Q
• Description: IC, BUCK, REG, 3.5A, 8HSOP
• Manufacturer: Allegro Microsystems Inc

Specifications of SI-8005Q

• Primary Input Voltage: 28V
• No. Of Outputs: 1
• Output Voltage: 24V
• Output Current: 3.5A
• Voltage Regulator Case Style: HSOP
• No. Of Pins: 8
• Operating Temperature Range: -30°C To +85°C
• Base: RoHS Compliant
• Package / Case: HSOP

SI-8005Q
Selection Guide
Absolute Maximum Ratings
Maximum Allowable Package Power Dissipation
All performance characteristics given are typical values for circuit or
system baseline design only and are at the nominal operating voltage and
an ambient temperature, T
Recommended Operating Conditions*
*Recommended operating range indicates conditions which are required for maintaining normal circuit functions shown in the Electrical Characteristics
table.
DC Input Voltage
DC Input Voltage
Allowable Power Dissipation
Junction Temperature
Storage Temperature
Thermal Resistance (Junction to Ambient)
Thermal Resistance (Junction to Case)
DC Input Voltage Range
DC Output Current Range
Operating Junction
Temperature Range
Operating Temperature
Range
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
Part Number
–25
SI8005Q-TL
Characteristic
Characteristic
0
A
Ambient Temperature, T
25
1000 pieces per reel
, of 25°C, unless oth er wise stated.
Packing
Symbol
50
T
T
V
I
JOP
OP
O
IN
Step-Down Switching Regulator with Current-Mode Control
Symbol
A
R
R
V
75
(°C)
V
T
P
T
stg
θJA
θJC
EN
V
if V
I
Using the circuit defined in the Typical Application
diagram and within P
Operation within P
IN
D
J
O
IN
≤ 2 A
(min) is the greater of either 4.75 V or V
O
115 Northeast Cutoff, Box 15036
+ 0.5 ≤ V
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
Limited by internal thermal shutdown, mounted on a 30 mm × 30 mm
glass epoxy PCB with 25 mm × 25 mm exposed copper area,
T
Internal thermal shutdown activates at approximately 140°C
Mounted on a 30 mm × 30 mm glass epoxy PCB with 25 mm ×
25 mm exposed copper area
100
J
(max) = 125°C
IN
≤ V
D
125
O
limits
D
+1 V, then V
limits
Remarks
Results calculated as:
where:
V
V
I
ηx is the efficiency (%), which varies with V
Efficiency curves in the Characteristic Performance section), and
V
should be made based on testing with the actual application (Sanken
diode SJPB-D4 was used for these results).
O
O
IN
F
is the Output current (0.3 A for these results),
is the diode forward voltage for D1, determination of the value for D1
is the output voltage,
is the Input voltage (0.4 V for these results),
IN
(min) is set such that
Remarks
P
D
=
O
+1 V; except
V
O
× I
O
⎛
⎜
⎜
⎝
100
x
remarks
– 1 – V
Min.
See
–30
–30
0
⎞
⎟
⎟
⎠
F
× I
Typ.
IN
–
–
–
–
O
and I
⎛
⎜
⎜
⎝
1 –
O
–30 to 150
–40 to 150
Rating
(derived from the
V
V
1.35
Max.
IN
O
125
30
74
40
3.5
28
85
6
⎞
⎟
⎟
⎠
Units
°C/W
°C/W
Unit
°C
°C
V
A
°C
°C
W
V
V
2