LTC3290EMSE#PBF

LTC3290 is a high voltage boost charge pump. When the VSET pin is grounded, this device operates as a standard boost charge pump, boosting the VOUT output to a maximum of the sum of the VIN and VAUX input supplies. An external resistor divider can be used on the VOUT, FB and GND pins to set the output voltage to any value between 1V and VIN + VAUX with hysteretic Burst Mode operation. Alternatively, the device can be configured in a VIN tracking mode, in which the VOUT pin regulates at a fixed offset above the VIN pin. The offset voltage is programmed with external resistors, one from the VOUT to the VSET pin and the other from the FB pin to GND. The maximum output voltage is limited to VIN + VAUX. It is used in application such as high efficiency general purpose high voltage boost supplies, high side N-FET driver, industrial/automotive power switching, VIN tracking supply etc.

• Wide input voltage range is 4.5V to 55V VIN/VAUX
• Reverse input protection to -55V
• Split input supplies for high efficiency boost ratios
• VIN quiescent current is 15µA typical at (VOUT = 0mA)
• VAUX quiescent current is 1µA typical at (shutdown, EN = 0V)
• Stable with ceramic capacitors
• Short-circuit/thermal protection
• IOUT upto 50mA, FB regulation voltage is 1V typical
• Operating junction temperature is -40°C to 125°C
• Package style is 10-lead plastic MSOP

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