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SI-8000SD 数据表(PDF) 1 Page - Sanken electric |
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SI-8000SD 数据表(HTML) 1 Page - Sanken electric |
1 / 2 page 20 ICs 1-1-3 DC/DC Converter ICs ■Features • Surface-mount package (TO263-5) • Output current: 3.0A • High efficiency: 79% typ. (SI-8033SD), 84% typ. (SI-8050SD) • Requires only 4 discrete external components • Internally-adjusted phase correction and output voltage • Built-in reference oscillator (60kHz) • Built-in overcurrent and thermal protection circuits • Output ON/OFF available • Soft start available by S.S pin ■Lineup ■Absolute Maximum Ratings Unit V W °C °C °C/W °C/W Ratings 43*1 3 +125 –40 to +125 3 33.3 Symbol VIN PD Tj Tstg θj-c θj-a Parameter DC Input Voltage Power Dissipation*2 Junction Temperature Storage Temperature Thermal Resistance (Junction to Case) Thermal Resistance (Junction to Ambient Air) Part Number SI-8033SD SI-8050SD VO (V) 3.3 5.0 IO (A) 3 Conditions When mounted on glass-epoxy board 40 × 40 mm (copper area: 100%) When mounted on glass-epoxy board 40 × 40 mm (copper area: 100%) *1: 35V for SI-8033SD *2: Limited by thermal protection circuit. ■Electrical Characteristics Unit V % kHZ mV mV mV/°C A V µA Parameter Output Voltage Efficiency Oscillation Frequency Line Regulation Load Regulation Temperature Coefficient of Output Voltage Overcurrent Protection Starting Current Soft Low-Level Voltage Start Pin* Outflow Current at Low Voltage Symbol VO Conditions η Conditions f Conditions ∆VOLINE Conditions ∆VOLOAD Conditions ∆VO/∆Ta IS1 Conditions VSSL ISSL Conditions (Ta=25°C) Parameter DC Input Voltage Range Output Current Range* Operating Junction Temperature Range Operating Temperature Range* Symbol VIN1 IO Tjop Top Ratings SI-8033SD SI-8050SD 5.5 to 28 7 to 40 0 to 3.0 –30 to +125 –30 to +125 Unit V A °C °C *: Limited by Ta-PD characteristics. ■Recommended Operating Conditions * Pin 5 is a soft start pin. Soft start at power on can be performed with a capacitor connected to this pin. The output can also be turned ON/OFF with this pin. The output is stopped by setting the voltage of this pin to VSSL or lower. Soft-start pin voltage can be changed with an open-collector drive circuit of a transistor. When using both the soft-start and ON/OFF functions together, the discharge current from C3 flows into the ON/OFF control transistor. Therefore, limit the current securely to protect the transistor if C3 capacitance is large. The ON/OFF pin is pulled up to the power supply in the IC, so applying the external voltage is prohibited. If this pin is not used, leave it open. Ratings SI-8033SD SI-8050SD min. typ. max. min. typ. max. 3.17 3.3 3.43 4.8 5.0 5.2 VIN=15V, IO=1A VIN=20V, IO=1A 79 84 VIN=15V, IO=1A VIN=20V, IO=1A 60 60 VIN=15V, IO=1A VIN=20V, IO=1A 25 80 40 100 VIN=8 to 28V, IO=1A VIN=10 to 30V, IO=1A 10 30 10 40 VIN=15V, IO=0.5 to 1.5A VIN=20V, IO=0.5 to 1.5A ±0.5 ±0.5 3.1 3.1 VIN=15V VIN=20V 0.2 0.2 20 30 40 20 30 40 VSSL=0.2V Surface Mount, Separate Excitation Step-down Switching Mode SI-8000SD Series ■Applications • Power supplies for telecommunication equipment • Onboard local power supplies SI-8000SD SI-8000SD ON/OFF 5 ON/OFF 5 ON/OFF C3 C3 5 VOUT. ON/OFF Soft start Soft start +VOUT. ON/OFF SI-8000SD |
类似零件编号 - SI-8000SD_11 |
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类似说明 - SI-8000SD_11 |
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