LTC1044A

LTC1044A 12V CMOS Voltage Converter Features n 1.5V to 12V Operating Supply Voltage Range n 13V Absolute Maximum Rating n 200µA Maximum No Load Supply Current at 5V n Boost Pin (Pin 1) for Higher Switching Frequency n 97% Minimum Open Circuit Voltage Conversion Efficiency n 95% Minimum Power Conversion Efficiency n IS = 1.5µA with 5V Supply When OSC Pin = 0V or V+ n High Voltage Upgrade to ICL7660/LTC1044 Applications n Conversion of 10V to ±10V Supplies n Conversion of 5V to ±5V Supplies n Precise Voltage Division: VOUT = VIN/2 ±20ppm n Voltage Multiplication: VOUT = ±nVIN n Supply Splitter: VOUT = ±VS/2 n Automotive Applications n Battery Systems with 9V Wall Adapters/Chargers Description The LTC®1044A is a monolithic CMOS switched-capacitor voltage converter. It plugs in for ICL7660/LTC1044 in applications where higher input voltage (up to 12V) is needed. The LTC1044A provides several conversion functions without using inductors. The input voltage can be inverted (VOUT = –VIN), doubled (VOUT = 2VIN), divided (VOUT = VIN/2) or multiplied (VOUT = ±nVIN). To optimize performance in specific applications, a boost function is available to raise the internal oscillator frequency by a factor of seven. Smaller external capacitors can be used in higher frequency operation to save board space. The internal oscillator can also be disabled to save power. The supply current drops to 1.5µA at 5V input when the OSC pin is tied to GND or V+. L, LT, LTC, LTM, Linear Technolog...