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SI-8001FDE 数据表(PDF) 1 Page - Sanken electric |
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SI-8001FDE 数据表(HTML) 1 Page - Sanken electric |
1 / 2 page 32 ICs 1-1-3 DC/DC Converter ICs ■Features • Surface-mount package (TO263-5) • Output current: 3.5 A • High efficiency: 83% (Vo = 5 V, VIN = 15 V, Io = 2 A) • Requires only 6 discrete components • Built-in reference oscillator (300 kHz) • Built-in drooping-type overcurrent and thermal protection circuits • Built-in soft start circuit (Output ON/OFF available) - SI-8001FDE • Built-in on/off function (active Low) - SI-8001FDL • Low current consumption during off - SI-8001FDL ■Lineup ■Absolute Maximum Ratings Unit V V W °C °C °C/W °C/W Ratings SI-8001FDE SI-8001FDL 43 –VIN 3 +150 –40 to +150 3*1 33.3*1 Symbol VIN Vc PD Tj Tstg θj-c θj-a Parameter Input Voltage ON/OFF Control Voltage Power Dissipation*1 Junction Temperature*2 Storage Temperature Thermal Resistance (Junction to Case) Thermal Resistance (Junction to Ambient Air) Part Number SI-8001FDE SI-8001FDL VO(V) Variable(0.8 to 24) IO(A) 3.5 Function Soft start ON/OFF Conditions When mounted on glass-epoxy board measuring 40×40 mm (copper laminate area: 100%) When mounted on glass-epoxy board measuring 40×40 mm (copper laminate area: 100%) When mounted on glass-epoxy board measuring 40×40 mm (copper laminate area: 100%) *1 : Limited by thermal protection circuit *2 : This product has built-in thermal protection circuits that may activate when the junction temperature exceeds 130°C. The recommended design for the junction temperature during IC operation is below 125°C. Parameter Input Voltage Range Output Voltage Range Output Current Range Operating Junction Temperature Range Operating Temperature Range Symbol VIN VO IO Tjop Top Ratings SI-8001FDE SI-8050FDL Vo+3*1 to 40 0.8 to 24 0 to 3.5 –30 to +100 –30 to +85 Unit V V A °C °C *1: The minimum value of the input voltage range is 4.5 V or Vo + 3 V, whichever is higher. ■Recommended Operating Conditions ■Electrical Characteristics Unit V mV/ °C % kHz mV mV A V µA V V µA mA µA Parameter Reference Voltage Temperature Coefficient of Reference Voltage Efficiency Oscillation Frequency Line Regulation Load Regulation Overcurrent Protection Starting Current Low Level Voltage SS Pin*1 Outflow Cuurent at Low Voltage ON/OFF Control Voltage (Output on) ON/OFF Pin*2 ON/OFF Control Voltage (Output off) ON/OFF Controll Current (Output on) Quiescent Circuit Current Symbol VADJ Conditions ∆VADJ/∆T Conditions η Conditions fO Conditions ∆VOLINE Conditions ∆VOLOAD Conditions IS Conditions VSSL ISSL Conditions Vc, IH Vc, IL Ic, IH Conditions Iq Conditions Iq(OFF) Conditions (R1=4.2kΩ, R2=0.8kΩ when Ta = 25°C and Vo=5V) *1: Pin 5 is the SS 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. SS-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 SS pin is pulled up (3.7 V typ.) to the power supply in the IC, so applying the external voltage is prohibited. If this pin is not used, leave it open. *2: Output is OFF when the output control terminal VC is open. Each input level is equivalent to LS-TTL. Therefore, the device can be driven directly by LS-TTLs. Ratings SI–8001FDE SI–8001FDL min. typ. max. min. typ. max. 0.784 0.800 0.816 0.784 0.800 0.816 VIN=15V, Io=0.2A VIN=15V, Io=0.2A ±0.1 ±0.1 VIN=15V, Io=0.2A, Tc=0 to 100°CVIN=15V, Io=0.2A, Tc=0 to 100°C 83 83 VIN=15V, Io=2A VIN=15V, Io=2A 270 300 330 270 300 330 VIN=15V, Io=2A VIN=15V, Io=2A 80 80 VIN=10 to 30V, Io=2A VIN=10 to 30V, Io=2A 50 50 VIN=15V, Io=0.2 to 3.5A VIN=15V, Io=0.2 to 3.5A 3.6 3.6 VIN=15V VIN=15V 0.5 – – – 630 – – – VIN=15V, VSS=0V – – – –– – 0.8 –– – 2.0 –– – 6 100 – Vc=2V 66 VIN=15V, Io=0A VIN=15V, Io=0A 200 600 30 200 VIN=15V, Vss=0V VIN=15V, Vc=2V SI-8001FDE SI-8001FDE SS 5SS 5SS C3 C3 5 VO.ON/OFF Soft start Soft start +Vo. On/OFF SI-8001FDE Surface Mount, Separate Excitation Step-down Switching Mode SI-8000FD Series ■Applications • DVD recorder, FPD-TV • OA equipment, such as printers • Onboard local power supplies |
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