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2022-09-24 23:33:15
CAT3200 - Low Noise Regulated Charge Pump DC-DC Converter
Features Constant high frequency (up to 2MHz) operation
100mA output current regulated output voltage (5V fixed CAT3200-5, adjustable CAT3200)
Low quiescent current (1.7mA typical).
Soft-start operation from input voltage as low as 2.7V, slew rate controlled thermal overload shutdown protection Low value external capacitor (1µF)
Foldback current overload protection shutdown current less than 1μA
in low profile CAT3200-5 (1mm thin) 6-pin SOT23 package
CAT3200 in MSOP-8 package
The CAT3200 and CAT3200-5 are switched capacitor boost converters that provide a low noise, regulated output voltage. The CAT3200-5 gives a fixed regulated 5V output. The CAT3200 has an adjustable output via external resistors. Constant frequency up to 2MHz charge pump allows small 1µF ceramic capacitors to be used. It can output loads up to 100mA maximum to support ideal applications in battery powered equipment over a wide input supply voltage range (2.7V to 4.5V). The shutdown control input allows the device to be placed in power-down mode, reducing supply current to less than 1µA. Under short-circuit or overload conditions, the event device is complete with both foldback current protection limiting and thermal overload detection. In addition, a soft-start, slope control circuit limits inrush current at power-up. The CAT3200-5 is available in a 6 lead, 1mm maximum thin SOT23 package. The CAT3200 is available in an 8-lead MSOP package.