Separate Excitation Step-down DC-DC Converter
1-1-3 DC/DC Converter ICs
SI-8000TFE Series Full-Mold, Separate Excitation Step-down Switching Mode
■Features
• Compac...
Description
1-1-3 DC/DC Converter ICs
SI-8000TFE Series Full-Mold, Separate Excitation Step-down Switching Mode
■Features
Compact full-mold package (equivalent to TO220)
Output current: 1.5 A High efficiency: 81% typ. (at Vo = 5 V) Requires only 4 discrete components Built-in reference oscillator (300 kHz) Built-in dropping-type-overcurrent and thermal
protection circuits Output ON/OFF available (circuit current at
output OFF: 200µA typ.) Soft start available by ON/OFF pin
■Applications
Onboard local power supplies AV equipment OA equipment
■Lineup
Part Number VO (V) IO (A)
SI-8008TFE Variable (0.8 to 24)
1.5
SI-8050TFE 5
■Absolute Maximum Ratings
Parameter
Symbol
Ratings
Unit
Conditions
DC Input Voltage VIN 43 V
PD1-1
17.8 (with infinite heatsink)
Limited by thermal protection, Tjmax=150°C
Power Dissipation
PD1-2
14.2 (with infinite heatsink)
Tjmax=125°C
W
PD2-1 2.15 (without heat sink, standalone operation)
Limited by thermal protection, Tjmax=150°C
PD2-2 1.72 (without heatsink, standalone operation)
Tjmax=125°C
Junction Temperature*
Tj
–30 to +150
°C
Storage Temperature
Tstg
–40 to +150
°C
Thermal Resistance (Junction to Case)
θ j-c
7 °C/W
Thermal Resistance (Junction to Ambient Air) θj-a
58 °C/W
*: This product has built-in thermal protection circuits that may operate when the junction temperature rises above 130°C. The recommended design for the junction temperature during operation is below 125°C.
■Recommended Operating ...
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