1-1-3 DC/DC Converter ICs
SI-8000E Series Full-Mold, Separate Excitation Step-down Switching Mode
■Features
■Lineup
• Compact full-mold package (equivalent to
Part Number
SI-8050E
5.0
TO220)
VO(V)
IO(A)
0.6
• High efficiency: 80%
• Requires only 4 discrete components
• Internally-adjusted phase correction and output
voltage
■Absolute Maximum Ratings
Parameter
Symbol
Ratings
Unit
V
DC Input Voltage
VIN
43
• Built-in reference oscillator (60kHz)
PD1
PD2
Tj
14(With infinite heatsink)
W
• Built-in overcurrent and thermal protection
circuits
Power Dissipation
1.5(Without heatsink, stand-alone operation)
W
Junction Temperature
+125
–40 to +125
7.0
°C
Storage Temperature
Tstg
θj-c
°C
Thermal Resistance(junction to case)
Thermal Resistance(junction to ambient air)
°C/W
°C/W
■Applications
• Power supplies for telecommunication
θj-a
66.7
equipment
• Onboard local power supplies
■Recommended Operating Conditions
Ratings
Parameter
Symbol
Unit
SI-8050E
7 to 40
DC Input Voltage Range
VIN
IO
V
A
Output Current Range
0 to 0.6
Operating Junction Temperature Range
Operating Temperature Range
Tjop
Top
–30 to +125
–30 to +125
°C
°C
■Electrical Characteristics
(Ta=25°C)
Ratings
Parameter
Symbol
SI-8050E
Unit
min.
4.80
typ.
max.
5.20
VO
5.00
Output Voltage
V
Conditions
VIN=20V, IO=0.3A
η
80
Efficiency
%
Conditions
f
VIN=20V, IO=0.3A
60
Oscillation Frequency
Line Regulation
kHZ
mV
Conditions
∆VOLINE
Conditions
∆VOLOAD
Conditions
∆VO/∆Ta
IS1
VIN=20V, IO=0.3A
80
100
40
VIN=10 to 30V, IO=0.3A
30
VIN=20V, IO=0.1 to 0.4A
±0.5
Load Regulation
mV
Temperature Coefficient of Output Voltage
mV/°C
0.61
Overcurrent Protection Starting
Current
A
Conditions
VIN=10V
ICs
32
ETC [ ETC ]
