Separate Excitation Step-down Switching Mode
1-1-3 DC/DC Converter ICs
SI-8000JF Series Full-Mold, Separate Excitation Step-down Switching Mode
■Features
• Compact...
Description
1-1-3 DC/DC Converter ICs
SI-8000JF Series Full-Mold, Separate Excitation Step-down Switching Mode
■Features
Compact full-mold package (equivalent to TO220)
Output current: 1.5A High efficiency: 67 to 88% Requires only 4 discrete components Internally-adjusted phase correction and
output voltage Capable of downsize a choke-coil due to IC's
high switching frequency (125kHz). (Compared with conventional Sanken devices) Built-in foldback-overcurrent and thermal protection circuits Output ON/OFF available (circuit current at output OFF: 200µA max.) Soft start available by ON/OFF pin
■Lineup
Part Number VO (V)* IO (A)
* VREF(V) for SI-8015JF
SI-8015JF 1.59
■Absolute Maximum Ratings
Parameter DC Input Voltage
Power Dissipation
Junction Temperature Storage Temperature Thermal Resistance (Junction to Case)
Symbol VIN PD1 PD2 Tj Tstg θj-c
SI-8033JF 3.3
1.5
SI-8050JF 5.0
Ratings 43
16.6 (with infinite heatsink) 1.5 (without heatsink, standalone operation)
+125 –40 to +125
6.0
SI-8120JF 12.0
Unit V W W °C °C
°C/W
■Applications
Power supplies for telecommunication equipment Onboard local power supplies
■Recommended Operating Conditions
Parameter
DC Input Voltage Range Output Current Range Operating Junction Temperature Range
Symbol
VIN1 VIN2
IO Tjop
SI-8015JF* VO+2 to 40 VO+3 to 40
Ratings
SI-8033JF
SI-8050JF
5.3 to 40
7 to 40
6.3 to 40
8 to 40
0 to 1.5
–30 to +125
SI-8120JF 14 to 40 15 to 40
Unit
V V A °C
Conditions
IO=0 to 1A IO=0 to 1...
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