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CAT3200TDI-GT3  -  Low Noise Regulated Charge Pump DC-DC Converter  -  ON Semiconductor  -  直流-直流 电荷泵

FEATURES

Constant high frequency (2MHz) operation

100mA output current

Regulated output voltage (5V fixed CAT3200-5, Adjustable CAT3200)

Low quiescent current (1.7mA typ.)

Input voltage operation down to 2.7V

Soft start, slew rate control

Thermal overload shutdown protection

Low value external capacitors (1μF)

Foldback current overload protection

Shutdown current less than 1μA

CAT3200-5 in low profile (1mm thin) 6-lead TSOT-23 package

CAT3200 in MSOP-8 package

APPLICATIONS

3V to 5V boost conversion

White LED driver

USB On-The-Go 5V supply

Local 5V supply from lower rail

Battery backup systems

Handheld portable devices

DESCRIPTION
The CAT3200 and CAT3200-5 are switched capacitor boost converters that deliver a low noise, regulated output voltage. The CAT3200-5 gives a fixed regulated 5V output. The CAT3200 has an adjustable output using external resistors. The constant frequency 2MHz charge pump allows small 1μF ceramic capacitors to be used.
Maximum output loads of up to 100mA can be supported over a wide range of input supply voltages (2.7V to 4.5V) making the device ideal for batterypowered applications.
A shutdown control input allows the device to be placed in power-down mode, reducing the supply current to less than 1μA.
In the event of short circuit or overload conditions, the device is fully protected by both foldback current limiting and thermal overload detection. In addition, a soft start, slew rate control circuit limits inrush current during power-up.
The CAT3200-5 is available in a 6-lead, 1mm max thin SOT23 package. The CAT3200 is available in an 8-lead MSOP package.