SI-8401L Datasheet, PDF (1/2 Pages) Sanken electric – Separate Excitation Step-down Switching Mode with Coil

1-1-3 DC/DC Converter ICs
SI-8400L/8500L Series Separate Excitation Step-down Switching Mode with Coil
■Features
■Lineup
• Switching ICs/Coil combined type
• Requires only 2 discrete components
• Low switching noise
Part Number
VO(V)
IO(A)
SI-8401L
5.0
0.5
SI-8501L
5.0
1.0
• No heatsink required
• Built-in overcurrent and thermal protection
circuits
■Absolute Maximum Ratings
Ratings
• Built-in soft start circuit (Output ON/OFF
Parameter
Symbol
Unit
SI-8400L
SI-8500L
available)...SI-8500L Series
DC Input Voltage
VIN
35
V
Power Dissipation
PD
1.25
3
W
■Applications
Junction Temperature
Tj
+100
°C
Storage Temperature
Tstg
–25 to +85
°C
• Telephone power supplies
• Onboard local power supplies
■Recommended Operating Conditions
Ratings
Parameter
Symbol
Unit
SI-8401L
DC Input Voltage Range
VIN
7 to 33
V
Output Current Range
IO
0 to 0.5
A
Operating Temperature Range
Top
–20 to +85
°C
Ratings
Parameter
Symbol
Unit
SI-8501L
DC Input Voltage Range
VIN
7 to 33
V
Output Current Range
IO
0 to 1.0
A
Operating Temperature Range
Top
–20 to +85
°C
■Electrical Characteristics
Parameter
Symbol
Output Voltage
Efficiency
Oscillation Frequency
Line Regulation
Load Regulation
Temperature Coefficient of Output Voltage
Switching Ripple
Voltage (C2=470µF)
Overcurrent Protection
Starting Current
VO
Conditions
η
Conditions
f
Conditions
∆VOLINE
Conditions
∆VOLOAD
Conditions
∆VO/∆Ta
∆Vr
Conditions
IS1
Conditions
Parameter
Symbol
Output Voltage
Efficiency
Oscillation Frequency
Line Regulation
Load Regulation
Temperature Coefficient of Output Voltage
Switching Ripple
Voltage (C2=470µF)
Overcurrent Protection
Starting Current
VO
Conditions
η
Conditions
f
Conditions
∆VOLINE
Conditions
∆VOLOAD
Conditions
∆VO/∆Ta
∆Vr
Conditions
IS1
Conditions
min.
4.80
0.55
min.
4.80
1.1
Ratings
SI-8401L
typ.
5.00
VIN=20V, IO=0.3A
80
VIN=20V, IO=0.3A
60
VIN=20V, IO=0.3A
80
VIN=10 to 30V, IO=0.3A
30
VIN=20V, IO=0.1 to 0.4A
±0.5
20
VIN=20V, IO=0.3A
VIN=10V
Ratings
SI-8501L
typ.
5.00
VIN=20V, IO=0.5A
83
VIN=20V, IO=0.5A
60
VIN=20V, IO=0.5A
70
VIN=10 to 30V, IO=0.5A
30
VIN=20V, IO=0.2 to 0.8A
±0.5
45
VIN=20V, IO=0.5A
VIN=18V
max.
5.20
100
40
40
max.
5.20
130
55
(Ta=25°C)
Unit
V
%
kHZ
mV
mV
mV/ °C
mVp-p
A
(Ta=25°C)
Unit
V
%
kHZ
mV
mV
mV/ °C
mVp-p
A
56 ICs