SI-8050JD [SANKEN]
Surface-Mount Separate Excitation Step-down Switching Mode Regulator ICs; 表面贴装励降压开关模式稳压器集成电路
| 型号： | SI-8050JD |
| 厂家： | 
SANKEN ELECTRIC |
| 描述： | Surface-Mount Separate Excitation Step-down Switching Mode Regulator ICs |
| 文件： | 总2页 (文件大小：437K) |
| 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-8000JD Series
Surface-Mount, Separate Excitation Step-down Switching Mode Regulator ICs
■Features
■Lineup
• Surface-mount package (TO263-5)
Part Number
SI-8033JD
3.3
SI-8050JD
5.0
SI-8090JD
9.0
SI-8120JD
12.0
VO(V)
• Output current: 1.5A
IO(A)
1.5
• High efficiency: 77 to 88%
• Requires only 4 discrete components
■Absolute Maximum Ratings
• Internally-adjusted phase correction and
output voltage
Parameter
Symbol
Ratings
Unit
V
Conditions
DC Input Voltage
VIN
43
• Capable of downsizing a choke-coil due to IC's
high switching frequency (125 kHz). (Com-
pared with conventional Sanken devices)
Output Current
IO
1.5
A
When mounted on glass-epoxy board 40 × 40 mm (copper
area 100%)
Power Dissipation*
PD
3
W
Junction Temperature
Tj
+125
–40 to +125
3
°C
°C
• Built-in foldback-overcurrent and thermal
protection circuits
Storage Temperature
Tstg
θj-c
Thermal Resistance (Junction to Case)
°C/W
• Output ON/OFF available (Circuit current at
Thermal Resistance (Junction to
Ambient Air)
When mounted on glass-epoxy board 40 × 40 mm (copper
area 100%)
θj-a
33.3
°C/W
output OFF: 200µA max)
*: Limited by thermal protection circuit
• Soft start available by ON/OFF pin Conditions
■Applications
• Power supplies for telecommunication equipment
• Onboard local power supplies, etc.
■Recommended Operating Conditions
Ratings
SI-8050JD
Parameter
Symbol
Unit
V
Conditions
SI-8033JD
5.3 to 40
6.3 to 40
SI-8090JD
11 to 40
SI-8120JD
14 to 40
VIN1
VIN2
IO
7 to 40
8 to 40
IO=0 to 1A
IO=0 to 1.5A
VIN≥VO+3V
DC Input Voltage Range
12 to 40
15 to 40
DC Output Current Range*
0 to 1.5
A
Operating Junction Temperature Range
Operating Temperature Range*
Tjop
Top
–30 to +125
–30 to +125
°C
°C
*: Limited by Ta–PD characteristics
■Electrical Characteristics
(Ta=25°C)
Ratings
Parameter
Symbol
SI-8033JD
SI-8050JD
SI-8090JD
SI-8120JD
typ.
Unit
min.
typ.
max.
min.
4.90
typ.
max.
5.10
min.
8.82
typ.
max.
9.18
min.
max.
VO
3.234
3.30
3.366
5.00
9.00
11.76
12.00
12.24
Output Voltage
V
Conditions
η
VIN=15V, IO=0.5A
VIN=20V, IO=0.5A
VIN=21V, IO=0.5A
VIN=24V, IO=0.5A
77
VIN=15V, IO=0.5A
125
82
VIN=20V, IO=0.5A
125
86
VIN=21V, IO=0.5A
125
88
VIN=24V, IO=0.5A
125
Efficiency
%
Conditions
f
Oscillation Frequency
Line Regulation
kHZ
mV
Conditions
∆VOLINE
Conditions
∆VOLOAD
Conditions
∆VO/∆Ta
IS1
VIN=15V, IO=0.5A
25
VIN=20V, IO=0.5A
40
VIN=21V, IO=0.5A
50
VIN=24V, IO=0.5A
60
80
100
120
130
VIN=8 to 30V, IO=0.5A
VIN=10 to 30V, IO=0.5A
10 40
VIN=15 to 30V, IO=0.5A
10 40
VIN=18 to 30V, IO=0.5A
10 40
10
VIN=15V, IO=0.2 to 0.8A
0.5
30
Load Regulation
mV
VIN=20V, IO=0.2 to 0.8A
0.5
VIN=21V, IO=0.2 to 0.8A
1.0
VIN=24V, IO=0.2 to 0.8A
1.0
Temperature Coefficient of Output Voltage
mV/°C
Overcurrent Protection
Starting Current
1.6
1.6
1.6
1.6
A
V
Conditions
VSSL
VIN=15V
VIN=20V
VIN=21V
VIN=24V
Low Level Voltage
0.5
0.5
0.5
0.5
*
ON/OFF
Outflow Current
ISSL
100
100
100
100
Pin
µA
mA
µA
at Low Voltage
Conditions
Iq
VSSL=0V
7
7
7
7
Conditions
Iq(oFF)
VIN=15V, Io=0A
VIN=20V, Io=0A
VIN=21V, Io=0A
VIN=24V, Io=0A
Quiescent Circuit Current
200
200
VIN=20V, VON/OFF=0.3V
200
200
Conditions
VIN=15V, VON/OFF=0.3V
VIN=21V, VON/OFF=0.3V
VIN=24V, VON/OFF=0.3V
*: Pin 5 is the ON/OFF pin. Soft start at power on can be performed with a capacitor connected to
this pin.
SI-8000JD
SI-8000JD
SI-8000JD
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.
ON/OFF-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.
5
ON/OFF
5
ON/OFF
C3
5
ON/OFF
C3
The ON/OFF pin is pulled up to the power supply in the IC, so applying the external voltage is
prohibited.
VOUT. ON/OFF
Soft Start
Soft Start
+VOUT. ON/OFF
ICs
46
SI-8000JD Series
■External Dimensions (TO263-5)
(Unit : mm)
0.2
10.0
(8.0)
Case Temperature Measurement Point
0.2
9.90
(4.4)
(15°)
0.2
4.5
+0.10
–0.05
1.3
3-R0.3
0.2
(2×R0.45)
(3°)
φ1.5 Dp:
Pin Assignment
0.15
q
w
e
r
t
VIN
0.10
(3°)
(3°)
SWOUT
GND
0.2
2.4
(R0.3)
0.10
0.25
VOS
0.88
(1.7
(R0.3)
0~6°
(0.5)
ON/OFF
0.1
0.1
0.8
0.8
0.25
0.25
0.25
)
(1.7
)
(1.7
)
(1.7
)
1
2
3
4
5
Plastic Mold Package Type
Flammability: 94V-0
(3°)
(3°)
2-R0.3
Product Mass: Approx. 1.48g
0.02
10.0
■Block Diagram
■Typical Connection Diagram
L1
1
2
4
V
OUT
SW
V
IN
VIN
SW OUT
1
5
VIN
2
V
S
SI-8000JD
PReg.
OCP
+
+
ON/OFF GND
ON/OFF
C1
C2
Di
5
3
Latch &
Drive
ON/OFF
Soft
Reset
C3
OSC
Start
GND
GND
+
–
TSD
4
C1 : 50V/220µF
C2 : 25V/470µF
Comp.
Error Amp.
+
–
C3 : 10V/0.47µF (Only when using soft-start function)
L1 : 100µH
VREF
GND
Di : SJPB-H6 (Sanken)
3
■Reference Data
Copper Laminate Area on Glass Epoxy Board vs.
Output Current vs. Power Dissipation (Typical)
Thermal Resistance (Junction to Ambient Air) (Typical Value)
55
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
50
With glass epoxy board of 40 × 40 mm
45
40V
40
θ
30V
20V
V
IN 8V
35
30
0
200
400
600
800
1000 1200 1400 1600 1800
Copper Laminate Area (mm2)
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
Output Current I
O
(A)
■Ta-PD Characteristics
3.5
Copper Area
40×40 mm
( j-a : 33.3°C/W)
θ
100
VO
PD=VO·IO
–1 –VF·IO 1–
ηχ
VIN
3
2.5
2
20×40 mm
θ
(
j-a : 37°C/W)
The efficiency depends on the input voltage and the output current. Therefore, obtain the value
from the efficiency graph and substitute the percentage in the formula above.
20×20 mm
(
j-a :44°C/W)
θ
10×10 mm
(
j-a : 53°C/W)
θ
VO : Output Voltage
VIN : Input Voltage
1.5
1
IO : Output Current
ηχ : Efficiency (%)
VF : D1 forward voltage
0.4V(IO=2A)(SJPB-H6)
0.5
0
–25
0
25
50
75
100
125
Ambient Temperature T
a
(°C)
Thermal design for D1 must be considered separately.
ICs
47
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