SI-8050HFE [SANKEN]
Full-Mold Separate Excitation Step-down Switching Mode Regulator ICs; 全模励降压开关模式稳压器集成电路
| 型号： | SI-8050HFE |
| 厂家： | 
SANKEN ELECTRIC |
| 描述： | Full-Mold Separate Excitation Step-down Switching Mode Regulator ICs |
| 文件： | 总2页 (文件大小：445K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
1-1-2 Switching Mode Regulator ICs
SI-8000HFE Series Full-Mold, Separate Excitation Step-down Switching Mode Regulator ICs
■Features
• Compact full-mold package (equivalent to
■Lineup
Part Number
SI-8008HFE
SI-8050HFE
5
TO220)
VO (V)
Variable (0.8 to 15)
• Output current: 5.5 A
IO (A)
5.5
• High efficiency: 83% typ. (at Vo = 5 V)
• Requires only 4 discrete components
• Built-in reference oscillator (150 kHz)
■Absolute Maximum Ratings
Parameter
Symbol
Ratings
43
Unit
V
Conditions
• Built-in drooping-type-overcurrent and thermal
protection circuits
DC Input Voltage
VIN
PD1-1
PD1-2
PD2-1
PD2-2
Tj
25 (with infinite heatsink)
20 (with infinite heatsink)
Limited by thermal protection, Tjmax=150°C
jmax=125°C
Limited by thermal protection, Tjmax=150°C
jmax=125°C
• Built-in soft start circuit (Output ON/OFF
available)
T
Power Dissipation
W
2.15 (without heat sink, standalone operation)
1.72 (without heatsink, standalone operation)
T
Junction Temperature*
+150
°C
°C
Storage Temperature
Tstg
–40 to +150
Thermal Resistance (Junction to Case)
Thermal Resistance (Junction to Ambient Air)
θj-c
5
°C/W
°C/W
■Applications
• Onboard local power supplies
θj-a
58
*: 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.
• AV equipment
■Recommended Operating Conditions
Ratings
Parameter
Symbol
Unit
SI-8008HFE
Vo+3*1 to 40
0.8 to 24
SI-8050HFE
8 to 40
5.0
Input Voltage Range
VIN
VO
IO
V
V
Output Voltage Range
Output Current Range
0 to 5.5
A
Operating Junction Temperature Range
Operating Temperature Range
Tjop
Top
–30 to +125
–30 to +85
°C
°C
O
*1: The minimum value of an input voltage range is the higher of 4.5 V or V + 3 V.
■Electrical Characteristics
(Ta=25°C)
Ratings
SI-8008HFE (at Vo = 5 V)
Ratings
Parameter
Symbol
Unit
SI-8050HFE
typ.
min.
typ.
max.
min.
4.90
max.
5.10
5.00
Vo
(VADJ
Output Voltage
(Reference Voltage)
)
0.784
0.800
0.816
V
Conditions
V
IN=15V, I
o
=1A
V
IN=15V, I
0.5
o=1A
∆Vo/∆T
(∆VADJ/∆T)
Conditions
Temperature Coefficient of Output Voltage
0.1
mV/°C
(Temperature Coefficient of Reference Voltage)
VIN=15V, I
o
=1A, T
83
c
=0 to 100°C
V
IN=15V, I
o
=1A, T
83
c
=0 to 100°C
η
Efficiency
%
V
IN=15V, I
150
o
=3A
Conditions
V
V
IN=15V, I
150
o
=3A
=3A
fo
Oscillation Frequency
kHz
mV
mV
IN=15V, I
60
o
V
IN=15V, I
60
o
=3A
Conditions
Conditions
Conditions
Conditions
∆VOLINE
∆VOLOAD
80
50
80
50
Line Regulation
Load Regulation
V
V
IN=10 to 30V, I
20
o
=3A
V
V
IN=10 to 30V, I
20
o=3A
IN=15V, I
o
=0.2 to 3A
IN=15V, Io=0.2 to 3A
I
S
5.6
5.6
Overcurrent Protection
Starting Current
A
V
V
IN=15V
V
IN=15V
Low Level Voltage
V
SSL
0.5
30
0.5
30
ON/OFF Pin*
I
I
I
SSL
10
10
Outflow Current at
µA
Low Voltage
V
SSL=0V
6
V
SSL=0V
6
Conditions
Conditions
Conditions
q
mA
V
IN=15V, I
200
o
=0A
V
IN=15V, I
200
o=0A
Quiescent Circuit Current
q(OFF)
400
400
µA
V
IN=15V, VSS=0V
VIN=15V, VSS=0V
*: 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 cur-
rent 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-8000HFE
SI-8000HFE
SI-8000HFE
5
SS
5
SS
C3
5 SS
C3
VOUT. ON/OFF
Soft start
Soft start
+VOUT. ON/OFF
ICs
76
SI-8000HFE Series
(Unit : mm)
■External Dimensions (TO220F-5)
Type A
Type B
0.2
4.7
0.2
φ
3.2
0.2
0.2
0.2
10.16
4.2
2.8
2.54
0.7
0.2
0.2
10.0
a. Part Number
b. Lot Number
c. Administer Number
φ
c
a
b
a
Pin Assignment
0.2
2.76
SK
b
q
w
e
r
t
VIN
0.1
2.6
c
SW
GND
0.8
0.5
0.15
ADJ (VOS for SI-8050HFE)
SS
0.95
0.85
+0.1
–0.05
R-end
+0.2
–0.1
0.6
4×p1.7
(Measured at the tip)
+0.2
–0.1
0.7
0.5
4.3
+0.2
–0.1
Plastic Mold Package Type
Flammability: UL94V-0
P1.7 0.7×4=6.8
0.7
0.2
0.45
9.6
0.7
8.2
0.7
(4.3)
0.7
3.9
Product Mass: Approx. 2.3g
8.2
The external dimension shall be
either A or B.
1
2
3
4
5
1
2
3
4 5
■Block Diagram
SI-8008HFE
SI-8050HFE
SW
1
5
V
IN
SW
2
1
5
IN
2
PReg.
Overcurrent
Protection
Overcurrent
Protection
PReg.
SS
ON/OFF
Latch &
Drive
Latch &
Drive
Reset
ON/OFF
Soft Start
Reset
ON/OFF
Soft Start
OSC
OSC
–
+
ADJ
Thermal
Protection
V
os
+
–
Thermal
Protection
4
Comp.
4
Comp.
–
+
Error Amp.
+
Error Amp.
–
+
+
Reference
Voltage
Reference
Voltage
GND
GND
3
3
■Typical Connection Diagram
VOUT
VOUT
V
IN
L
V
IN
L
1
1
2
2
+
+
+
+
C1
C4
5
Di
C2
C1
C4
5
Di
C2
R1
R2
SI-8008HFE
SI-8050HFE
C3
C3
4
4
3
3
C1 : 1500µF
C2 : 1000µF
C3 :1µF (Only when using soft-start function)
C4 :4.7µF (RPER11H475K5 (Murata Manufacturing) recommended)
L1 :100µH
Di : FMB-G16L (Sanken)
ICs
77
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