SI-8005Q Allegro Microsystems Inc, SI-8005Q Datasheet - Page 3

• 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
ELECTRICAL CHARACTERISTICS
Reference Voltage
Output Voltage Temperature
Coefficient
Efficiency
Operating Frequency
Line Regulation
Load Regulation
Overcurrent Protection Threshold
Quiescent Current 1
Quiescent Current 2
SS Terminal Leakage Current
EN Terminal High Level Voltage
EN Terminal Low Level Voltage
EN Terminal Leakage Current
Error Amplifier Voltage Gain
Error Amplifier Transconductance
Current Sense To COMP
Transimpedance
Maximum Duty Cycle (On)
Minimum On-Time
1
2
3
can be applied to this terminal.
Using circuit shown in Measurement Circuit diagram.
Efficiency is calculated as: η(%) = ([V
SS terminal enables soft start when a an external capacitor is connected to it. Because a pull-up resistor is provided inside the IC, no external voltage
V
I I N
I
I I N
2
Characteristics
C1
V
EN
I
EN
V
SS
I
SS
7
8
S S
EN
2
I I N
4
G N D
3
S I- 8005Q
1
1
6
C O M P
B S
, valid at T
O
× I
C3
R3
Step-Down Switching Regulator with Current-Mode Control
SW
FB
O
∆V
Symbol
] / [V
DC
V
1/G
V
I
V
V
V
I
REF
IN(off)
G
I
A
t
LOAD
CEH
5
I
SSL
MIN
f
LINE
3
REF
I
CEH
η
CEL
IN
O
EA
S
EA
MAX
C4
CS
A
IN
Di
/∆T
=25°C, unless otherwise noted
× I
V
IN
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
FB
]) × 100.
L1
R1
R2
V
V
V
V
V
V
V
V
V
V
V
V
V
Measurement Circuit Diagram
IN
IN
IN
IN
IN
IN
IN
IN
IN
SSL
IN
IN
EN
= 12 V, I
= 12 V, I
= 12 V, V
= 16 V, V
= 8 to 28 V, V
= 12 V, V
= 12 V, V
= 12 V, V
= 12 V, V
= 12 V
= 12 V
= 0 V
C2
= 0 V, V
V
O
I
O
O
O
R L
O
O
O
O
O
O
IN
= 1.0 A
= 1.0 A, T
= 5 V, I
= 5 V, I
= 5 V, I
= 5 V
= 5 V, I
= 5 V, I
= 16 V
O
Conditions
= 5 V, I
O
O
O
O
O
A
= 1 A
= 1 A
= 0.1 to 3.5 A
= 0 A, V
= 0 A,V
= –40°C to 85°C
O
= 1 A
EN
EN
= 0 V
= open
Component
C1
C2
C3
C4
R1
R2
R3
L1
Di
0.485
Min
450
3.6
2.8
–
–
–
–
–
–
–
–
–
–
–
–
–
–
22 μF / 50 V
47 μF / 25 V
220 pF / 10 V
10 nF / 25 V
SPB-G56S
10 μH
46 kΩ
5.1 kΩ
62 kΩ
Rating
0.500
±0.05
1000
0.35
Typ
500
800
100
90
10
10
18
92
–
–
5
–
–
1
0.515
Max
550
6.0
2.0
60
60
20
–
–
–
–
–
–
–
–
–
–
–
mV/°C
Units
μA/V
kHz
V/ V
V/A
mV
mV
mA
μA
μA
μA
ns
%
%
V
V
V
A
3