SI-8505L [SANKEN]
Separate Excitation Switching Type with Coil; 独立的励磁开关类型与线圈
| 型号： | SI-8505L |
| 厂家： | 
SANKEN ELECTRIC |
| 描述： | Separate Excitation Switching Type with Coil |
| 文件： | 总6页 (文件大小：80K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
●SI-8400L/8500L Series
SI-8400L/8500L Series
Separate Excitation Switching Type with Coil
■Features
• Integrated switching IC and coil construction
• Requires 2 external components only
• Low switching noise
• Heatsink not required
• Built-in overcurrent and thermal protection circuits
• Built-in soft start circuit (Output ON/OFF control)...SI-8500L Series
■Applications
• Telephone power supplies
• Onboard local power supplies
■Lineup
Part Number
VO(V)
SI-8401L
5.0
SI-8402L
12.0
SI-8403L
3.3
SI-8405L
15.0
SI-8501L
5.0
SI-8502L
12.0
SI-8503L
3.3
SI-8504L
9.0
SI-8505L
15.0
IO(A)
0.5
0.4
0.5
0.4
1.0
■Absolute Maximum Ratings
Ratings
Parameter
Symbol
Unit
SI-8400L
1.25
SI-8500L
DC Input Voltage
VIN
PD
Tj
35
V
Power Dissipation
Junction Temperature
Storage Temperature
3
W
°C
°C
+100
Tstg
–25 to +85
■Recommended Operating Conditions
Ratings
Parameter
Symbol
Unit
SI-8401L
SI-8402L
SI-8403L
5.3 to 33
0 to 0.5
SI-8405L
18 to 33
0 to 0.4
DC Input Voltage Range
Output Current Range
VIN
IO
7 to 33
0 to 0.5
15 to 33
0 to 0.4
V
A
Operating Temperature Range
Top
–20 to +85
°C
Ratings
SI-8503L
5.3 to 33
0 to 1.0
Parameter
Symbol
Unit
SI-8501L
7 to 33
SI-8502L
15 to 33
SI-8504L
12 to 33
SI-8505L
18 to 33
DC Input Voltage Range
Output Current Range
VIN
IO
V
A
Operating Temperature Range
Top
–20 to +85
°C
96
●SI-8400L/8500L Series
■Electrical Characteristics
(Ta=25°C)
Ratings
Parameter
Symbol
SI-8401L
typ.
SI-8402L
typ.
SI-8403L
typ.
SI-8405L
typ.
Unit
min.
4.80
V
max.
min.
11.40
V
max.
min.
3.17
V
max.
min.
14.25
V
max.
VO
5.00
5.20
12.00
12.60
=0.3A
3.30
3.43
15.00
15.75
Output Voltage
Efficiency
V
Conditions
η
IN=20V, I
80
O
O
O
=0.3A
IN=24V, I
88
O
O
O
IN=15V, I
O
O
O
=0.3A
IN=27V, I
O
O
O
=0.3A
75
89
%
Conditions
f
V
V
IN=20V, I
60
=0.3A
V
IN=24V, I
60
=0.3A
V
IN=15V, I
60
=0.3A
V
V
IN=27V, I
60
=0.3A
Switching Frequency
Line Regulation
Load Regulation
kHZ
mV
mV
Conditions
∆VOLINE
Conditions
∆VOLOAD
Conditions
∆VO/∆Ta
∆Vr
IN=20V, I
80
=0.3A
V
IN=24V, I
=0.3A
V
IN=15V, I
60
=0.3A
IN=27V, I
=0.3A
100
=0.3A
40
100
130
80
=0.3A
30
100
130
V
IN=10 to 30V, I
O
V
IN=18 to 30V, I
O
=0.3A
95
V
IN=8 to 30V, I
O
V
IN=21 to 30V, I
O
=0.3A
30
70
20
90
120
V
IN=20V, I
O=0.1 to 0.4A
V
IN=24V, I
O=0.1 to 0.4A
V
IN=15V, IO=0.1 to 0.4A
VIN=27V, IO=0.1 to 0.4A
Temperature Coefficient of Output Voltage
Switching Ripple
±0.5
±1.5
±0.5
±1.5
mV/°C
20
40
=0.3A
35
70
=0.3A
15
30
=0.3A
40
80
=0.3A
mVp-p
Voltage (C2=470µF)
Overcurrent Protection
Starting Current
Conditions
IS1
V
IN=20V, I
O
V
IN=24V, I
O
V
IN=15V, I
O
V
IN=27V, I
O
0.55
0.45
0.55
0.45
A
Conditions
VIN=10V
V
IN=18V
VIN=8V
VIN=21V
(Ta=25°C)
Ratings
SI-8503L
min. typ. max. min. typ. max. min. typ. max. min. typ. max. min. typ. max.
Parameter
Symbol
SI-8501L
SI-8502L
SI-8504L
SI-8505L
Unit
VO
4.80
5.00
5.20 11.40 12.00 12.60 3.17
3.30
3.43
=0.5A
8.55
9.00
9.45 14.25 15.00 15.75
Output Voltage
Efficiency
V
Conditions
η
V
V
V
IN=20V, I
O
O
O
=0.5A
=0.5A
=0.5A
V
V
V
IN=24V, I
O
O
O
=0.5A
=0.5A
=0.5A
V
V
V
IN=15V, I
O
O
O
V
V
V
IN=21V, I
87
O
O
O
=0.5A
=0.5A
=0.5A
V
V
V
IN=25V, I
90
O
O
O
=0.5A
83
89
79
%
Conditions
f
IN=20V, I
60
IN=24V, I
60
IN=15V, I
60
=0.5A
IN=21V, I
60
IN=25V, I
60
=0.5A
Switching Frequency
Line Regulation
Load Regulation
kHZ
mV
mV
Conditions
∆VOLINE
Conditions
∆VOLOAD
Conditions
∆VO/∆Ta
∆Vr
IN=20V, I
70
IN=24V, I
70
IN=15V, I
50
=0.5A
80
IN=21V, I
70
IN=25V, I
70
=0.5A
130
130
130
130
V
IN=10 to 30V,
30
I
O
=0.5A
V
IN=18 to 30V,
30
I
O
=0.5A
55
V
IN=8 to 30V,
20
IO
=0.5A
45
VIN=15 to 30V,
I
O
=0.5A
VIN=21 to 30V,
I
O=0.5A
55
30
55
30
55
VIN=20V,
IO
=0.2 to 0.8A
VIN=24V,
IO
=0.2 to 0.8A
V
IN=15V,
IO
=0.2 to 0.8A
V
IN=21V,
IO=0.2 to 0.8A
VIN=25V, IO=0.2 to 0.8A
Temperature Coefficient of Output Voltage
Switching Ripple
±0.5
±1.5
±0.5
±1.0
±1.5
mV/°C
45
30
15
25
30
mVp-p
Voltage (C2=470µF)
Overcurrent Protection
Starting Current
Conditions
IS1
V
IN=20V, I
O
=0.5A
VIN=24V, IO=0.5A
VIN=15V, I
O
=0.5A
V
IN=21V, I
O
=0.5A
V
IN=25V, I
O=0.5A
1.1
1.1
1.1
1.1
1.1
A
Conditions
V
IN=18V
VIN=24V
V
IN=12V
V
IN=21V
VIN=25V
97
●SI-8400L/8500L Series
■Outline Drawing
(unit:mm)
SI-8400L
SI-8500L
V
y
IN
LIN
r
e LIN
V
IN
r
q
a. Part Number
b. Lot Number
a. Part Number
b. Lot Number
Open Air Type
a
b
b
a
Open Air Type
w GND
14.5±0.5
Weight: Approx. 14.5g
SK
Vo
Weight: Approx. 5.1g
Terminal 1 marking
q
w
e
V
OUT SS GND
26±0.1
Terminal 1 marking
φ0.8max.
(2.17)
(10.16)
(7.62)
(2.19)
φ0.6
2
4
18
■Block Diagram
SI-8400L
SI-8500L
3
LIN
4
LIN
L1
L1
4
1
6
1
MIC1
MIC
1
VIN
VO
VIN
VO
Reg.
OSC
OCP
Reg.
OSC
OCP
Latch
Latch
&
Drive
Reset
Reset
&
Drive
Comp.
Comp.
Amp.
TSD
TSD
Di1
Di1
Amp.
V
REF
VREF
S.S.
2
GND
2
3
GND
■Standard External Circuit
VOUT
VOUT
V
IN
V
IN
VO
VIN
VO
V
IN
SI-8400L
SI-8500L
4
1
6
1
GND
2
LIN
S.S GND LIN
+
+
+
+
3
C1
C2
2
3
4
C1
C2
220µF
470µF
470µF
470µF
N.C
C3
N.C
GND
GND
GND
GND
Pin compatible with SI-8200L
C3 is necessary only for using soft start function.
Pin compatible with SI-8300L
98
●SI-8400L/8500L Series
■Ta-PD Characteristics
100
3.0
2.0
1.0
0
1.5
1.0
PD=VO•IO
–1
SI-8400L
ηχ
SI-8500L
VO :Output voltage
IO :Output current
ηχ :Efficiency (%)
0.5
The efficiency depends on the input
voltage and the output current.Thus,
obtain the value from the efficiency
graph and substitute the percentage
in the formula above.
0
0
25
50
75
100
0
25
50
75
100
Ambient Temperature Ta (°C)
Ambient Temperature Ta (°C)
■SI-8500L application circuit
Terminal no.2 is for soft start. Connecting a capacitor to the terminal
enables the soft start function. See page 85 for the formulas to calcu-
late delay time and rise time. Output can be turned on and off by
using the soft start terminal. To stop output, set the soft start terminal
voltage to VSSL (0.2V typ.) or less. To switch the potential of the soft
start terminal, drive the open collector of the transistor. Since the
discharge current from C3 flows to the ON/OFF control transistor, limit
the current for protection. The SS terminal is pulled up to the power
supply in the IC and no external voltage can be applied.
SI-8500L
SI-8500L
SI-8500L
2
S.S.
2
S.S.
2 S.S.
C3
C3
V
O. ON/OFF
Soft start
Soft start +VO ON/OFF
■Caution
1. Allocation of Components
For the best operating environment, the ground should be a single ground line at the GND terminal (terminal 2 on the SI-8400L, terminal 3 on
the SI-8500L), and the wiring from C1 and C2 to ground should be as short as possible.
2. Capacitors C1 and C2
1) They must satisfy the breakdown voltage and allowable ripple current.
Exceeding the ratings of these capacitors or using them without derating shortens their service lives and may also cause abnormal
oscillation of the IC.
2) C2 must be a low-impedance type capacitor to ensure minimum ripple voltage and stable switching operation.
3) C3 (SI-8500L only) is a capacitor for soft start. When not using soft start, leave terminal 2 open. It is pulled up inside the IC.
3. Terminals LIN and NC in the connection diagram must be left unconnected to other circuits.
4. The IC's metalic heatsink is electrically floating. Do not connect it to GND or any other circuit.
5. Since the SI-8400L and 8500L series have an open-package construction, they can only be operated in specific environments. Verify the
operating environment and use the conditions indicated in the reliability data.
99
●SI-8400L/8500L Series
■Typical Characteristics (SI-8400L Series)
Rise Characteristics(SI-8401L)
Efficiency Characteristics(SI-8401L)
Load Regulation(SI-8401L)
Ta=25°C
Ta=25°C
Ta=25°C
5.3
100
6
5
4
3
2
1
0
5.2
90
0.1A
20V
25V
33V
10V
7V
5.1
5.0
4.9
4.8
0
80
70
60
20V
V
IN
7V
V
IN=33V
10V
10V
0.3A
7V
20V
25V
33V
50
0
0
0.1
0.2
0.3
0.4
(A)
0.5
0
2
4
6
8
10
0
0.1
0.2
0.3
0.4
0.5
Output Current I
O
Output Current I
O
(A)
Input Voltage VIN (V)
Temperature Characteristics(SI-8401L)
Overcurrent Protection Characteristics(SI-8401L)
Thermal Protection Characteristics(SI-8401L)
IN=20V, I =20mA
V
IN=20V, IO=0.3A
Ta=25°C
V
O
6
6
5
4
3
2
5.3
5.2
5.1
5.0
4.9
4.8
100
90
5
η
80
70
60
50
4
3
V
f
O
2
1
0
1
0
40
0
4.7
0
0
0.5
1.0
1.5
2.0
0
50
100
150
(°C)
200
–40 –20
0
20
40
60
80 100
(°C)
Output Current IO (A)
Case Temperature T
C
Ambient Temperature T
a
Note on Thermal Protection:
The thermal protection circuit is intended for pro-
tection against heat during instantaneous short-
circuiting. Its operation is not guaranteed for short-
circuiting over extended periods of time.
Rise Characteristics(SI-8402L)
Efficiency Characteristics(SI-8402L)
Load Regulation(SI-8402L)
T
a
=25°C
Ta=25°C
Ta=25°C
100
90
80
70
60
12.3
12.2
12.1
12.0
11.9
11.8
0
14
12
0.2A
10
8
V
IN=33V
24V
20V
15V
6
4
50
0
2
0
0
0.1
0.2
0.3
(A)
0.4
0
0.1
0.2
0.3
(A)
0.4
0
5
10
15
20
Output Current I
O
Output Current I
O
Input Voltage VIN (V)
100
●SI-8400L/8500L Series
■Typical Characteristics (SI-8500L Series)
Rise Characteristics(SI-8501L)
Efficiency Characteristics(SI-8501L)
Load Regulation(SI-8501L)
Ta=25°C
Ta=25°C
Ta=25°C
100
7
6
5
4
3
2
1
0
5.15
90
5.10
5.05
80
70
60
0.5A
5.00
4.95
4.90
4.85
0
15V
7V
50
40
0
0
0.25
0.5
0.75
1
0
5
10
15
20
0
0.25
0.5
0.75
1
Input Voltage VIN (V)
Output Current IO (A)
Output Current IO (A)
Temperature Characteristics(SI-8401L)
Overcurrent Protection Characteristics(SI-8401L)
Thermal Protection Characteristics(SI-8401L)
V
IN=20V, I
O
=0.5A
V
IN=20V, IO=0A
Ta=25°C
100
90
5.15
7
7
6
5
6
5.10
5.05
5.00
4.95
η
80
70
5
4
4
3
V
f
O
60
50
40
0
3
2
20V
4.90
4.85
0
2
1
0
1
0
0
40
80
120
160
–40
0
40
80
(°C)
120
0
1
2
3
(A)
4
Ambient Temperature T
a
Ambient Temperature Ta (°C)
Output Current I
O
Note on Thermal Protection:
The thermal protection circuit is intended for pro-
tection against heat during instantaneous short-
circuiting.Its operation is not guaranteed for short-
circuiting over extended periods of time.
Rise Characteristics(SI-8502L)
Efficiency Characteristics(SI-8502L)
Load Regulation(SI-8502L)
Ta=25°C
T
a=25°C
Ta=25°C
12.3
100
14
12
10
8
12.2
12.1
90
80
0.5A
33V
24V
VIN=33V
12.0
70
60
50
40
18V
15V
11.9
6
11.8
11.7
4
2
0
0
0
0
0.25
0.5
0.75
1
0
0.25
0.5
0.75
(A)
1.0
0
5
10
15
20
Output Current IO (A)
Input Voltage VIN (V)
Output Current I
O
101
相关型号：
SI-8511NVS
Surface-Mount Synchronous Rectifier Step-down Switching Mode Regulator Control ICs
SANKEN
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