Product Summary

The SCI7654MOA is a highly efficient, but low power-consumption DC-to-DC converter based on the advanced CMOS technologies. The SCI7654MOA 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 SCI7654MOA 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.

Parametrics

SCI7654MOA absolute maximum ratings: (1)Input Power Voltage, VIN: -26.0/N to VDD +0.3 V; (2)Input Pin Voltage, VI: VIN -0.3 to VDD +0.3 V; (3)TC1, TC2, FC pins; (4)Output Pin Voltage 1, V0C1: VIN -0.3 to VDD +0.3 V; (5)Output Pin Voltage 2, VOC2 2×VIN to -0.3 VIN +0.3 V; (6)Output Pin Voltage 3, VOC3 3×VIN to -0.3 2×VIN +0.3 V; (7)Output Pin Voltage 4, VOC4 4×VIN to -0.3 3×VIN +0.3 V; (8)Regulator Input Power Voltage, VRI: N×VIN -0.3 to VDD +0.3 V; (9)Regulator Input Pin Voltage, VRV: N×VIN -0.3 to VDD +0.3 V; (10)Output Voltage, V0×N VIN to -0.3 VDD +0.3 V; (11)Input Current, IIN: 80 mA; (12)Output Current, IOUT N.4: 20 mAT; N>4: 80/N; (13)Allowable Loss, Pd: 210 mW; (14)Operating Temperature, Topr: -30 to 85℃; (15)Storage Temperature, Tstg: -55 to 150℃; (16)Soldering Temperature and Time, Tsol: 260·10℃.S.

Features

SCI7654MOA features: (1)An input voltage can be boosted double/triple/quadruple to negative potential.; (2)Input voltages: -2.4 to -5.5V (quadruple boosting), -2.4 to -7.3V (triple boosting), -2.4 to -11.0V (double boosting); (3)Excellent vol tage conversion efficiency: 95% (Typ.); (4)Large output current: 20 mA (Max.) during quadruple boosting; (5)Built-in voltage regulator (for stable voltage output); (6)Built-in reference voltage source for accurate regulation: -1.5 ±0.05V (CT0); (7)Regulator output voltage temperature gradient function: -0.04, -0.15, -0.35, -0.55%/℃; (8)Low current consumption: 130 μA (Typ.); (9)Low standby current: 5.0 μA (Max.); (10)Built-in oscillator circuit; (11)5/6-time voltage boosting in negative potential by serial connection; (12)Package: SCI7654M0A SSOP2-16pin (plastic), SCI7654C0A DIP-16pin (plastic).

Diagrams

SCI7654MOA block diagram