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參數(shù)資料
| 型號： | SI-8008TM |
| 廠商： | SANKEN ELECTRIC CO LTD |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.6 A SWITCHING REGULATOR, 300 kHz SWITCHING FREQ-MAX, PSSO5 |
| 封裝： | PLASTIC, TO-252, 5 PIN |
| 文件頁數(shù)： | 1/2頁 |
| 文件大?。?/td> | 55K |
| 代理商： | SI-8008TM |
52
ICs
Surface-Mount, Separate Excitation Step-down Switching Mode Regulator ICs
SI-8000TM Series
1-1-2 Switching Mode Regulator ICs
I
Absolute Maximum Ratings
Unit
V
W
°
C
°
C
°
C/W
°
C/W
Ratings
43
1.06
1.65
–
30 to +150
–
40 to +150
6
95
Symbol
V
IN
P
D1
P
D2
T
j
T
stg
θ
j-c
θ
j-a
Parameter
DC Input Voltage
Power Dissipation
Junction Temperature
*
Storage Temperature
Thermal Resistance (Junction to Case)
Thermal Resistance (Junction to
Ambient Air)
I
Features
Compact surface-mount package (TO252-5)
Output current: 1.5 A
High efficiency: 81% typ. (at Vo = 5 V)
Requires only 4 discrete components
Built-in reference oscillator (300 kHz
Built-in drooping-type-overcurrent and thermal
protection circuits
Output ON/OFF available (circuit current at
output OFF: 200
μ
A max)
Soft start available by ON/OFF pin
Conditions
When mounted on glass-epoxy board (900 mm
2
copper area 4.3%)
When mounted on glass-epoxy board (900 mm
2
copper area 50%)
When mounted on glass-epoxy board (900 mm
2
copper area 4.3%)
*: This product has built-in thermal protection circuits that may operate when the junction temperature rises above
130
°
C.
The recommended design for the junction temperature during operation is below 125
°
C.
I
Applications
Onboard local power supplies
AV equipment
OA equipment
I
Recommended Operating Conditions
Parameter
Input Voltage Range
Output Voltage
Output Current Range
Operating Junction Temperature Range
Operating Temperature Range
Symbol
V
IN
V
O
I
O
T
jop
T
op
Ratings
SI-8008TM
V
O
+3*
1
to 40
0.8 to 24
0 to 1.5
–
20 to +125
–
20 to +125
Unit
V
V
A
°
C
°
C
*1: The minimum value of an input voltage range is the higher of 4.5 V or V
O
+ 3 V.
I
Electrical Characteristics
(T
a
=25
°
C)
Parameter
Symbol
Unit
Rating
SI-8008TM
typ.
0.800
V
IN
=15V, I
o
=0.1A
±
0.1
V
IN
=15V, I
o
=0.1A, T
c
=
0 to 100
°
C
81
V
IN
=15V, I
o
=0.5A
300
V
IN
=15V, I
o
=0.5A
60
V
IN
=10
to
30V, I
o
=0.5A
min.
0.784
1.6
max.
0.816
80
Reference Voltage
Efficiency
Oscillation Frequency
Line Regulation
Load Regulation
Overcurrent Protection Starting Current
V
ADJ
V
OLOAD
Conditions
Conditions
Conditions
Conditions
Conditions
Conditions
Conditions
Conditions
Conditions
Conditions
V
ADJ
/
T
η
10
V
SSL
=0V
6
V
IN
=15V, I
o
=0A
200
V
IN
=15V, V
SS
=0V
0.5
40
10
V
IN
=15V, I
o
=0.2
to
1.5A
40
fo
V
OLINE
V
IN
=15V
I
q
400
I
q (OFF)
V
SSL
I
SSL
I
S
V
mV/
°
C
%
kHz
mV
mV
A
V
μ
A
mA
μ
A
ON/OFF Pin*
Quiescent Circuit Current
Low Level Voltage
Outflow Current
at Low Voltage
Temperature Coefficient of
Reference Voltage
*: Pin 5 is the SS pin. Soft start at power on can be performed with a capacitor connected to this pin. The
output can also be turned ON/OFF with this pin.
The output is stopped by setting the voltage of this pin to VSSL or lower. SS-pin voltage can be changed
with an open-collector drive circuit of a transistor. When using both the soft-start and ON/OFF functions
together, the discharge current from C3 flows into the ON/OFF control transistor. Therefore, limit the
current securely to protect the transistor if C3 capacitance is large. The SS pin is pulled up to the power
supply in the IC, so applying the external voltage is prohibited. If the pin is not used, leave it open.
SI-8000TM
SI-8000TM
SS
5
SS
5
SS
C3
C3
5
V
O.
ON/OFF
Soft start
Soft start
+V
O.
ON/OFF
SI-8000TM
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