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SCI7654 Datasheet(PDF) 1 Page - Epson Company |
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SCI7654 Datasheet(HTML) 1 Page - Epson Company |
1 / 10 page DC/DC Converter PF754-03 SCI7654M0A/C0A DESCRIPTION The SCI7654 is a highly efficient, but low power-consumption DC-to-DC converter based on the advanced CMOS technologies. It can generate an output voltage double/triple/quadruple times higher than the input (in negative direction) if 4/3/2 external capacitors are attached. With a built-in voltage regulator, the SCI7654 can provide a stable output by setting the DC/DC output to any voltage via two external resistors. This is optimum to the LCD panel power supply as the stable output can have the negative temperature gradient required for an LCD panel. FEATURES An input voltage can be boosted double/triple/quadruple to negative potential. Input voltages: –2.4 to –5.5V (quadruple boosting), –2.4 to –7.3V (triple boosting), –2.4 to –11.0V (double boosting) Excellent vol tage conversion efficiency: 95% (Typ.) Large output current: 20 mA (Max.) during quadruple boosting Built-in voltage regulator (for stable voltage output) Built-in reference voltage source for accurate regulation: –1.5 ±0.05V (CT0) Regulator output voltage temperature gradient function: –0.04, –0.15, –0.35, –0.55%/˚C Low current consumption: 130 µA (Typ.) Low standby current: 5.0 µA (Max.) Built-in oscillator circuit 5/6-time voltage boosting in negative potential by serial connection Package: SCI7654M0A SSOP2-16pin (plastic), SCI7654C0A DIP-16pin (plastic) BLOCK DIAGRAM Double/Triple/Quadruple Boosting 95% Excellent Power Conversion Efficiency Built-in Voltage Regulator VDD POFF1 POFF2 FC VIN C1P C2P C1N C3N C2N TC1 TC2 RV VREG VRI VOUT Power-Off Control Clock Generator Voltage Converter Booster Control Ref. Voltage Circuit Voltage Regulator |
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