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The ultra-small MAX828/MAX829 monolith
ic, CMOS charge-pump inver
te
rs
accept input voltages ranging from +1.5V to +5.5V. The MAX828 operates at 12kHz, and the MAX829 operates at 35kHz. Their high efficiency (greater than 90% over most of the lo
ad-current range) and low opera
ting current (60µA f
orthe MAX828) make these devices ideal for both battery-powered and board-level voltage-conversion applications.
The MAX828/MAX829 combine low quiescent current and high efficiency. Oscillator control circuitry and four power MOSFETswitches are included on-chip. Applications include generating a -5V supply from a +5V logicsupply to power analogcircuitry. Both parts come in a 5- pin SOT23-5 package and candeliver 25mA with a voltage drop of 500mV.
For a similar device with logic-control ledshutdown, refer to the MAX1719/MAX1720/MAX1721. For applications requiring more power, the MAX860 delivers up to 50mA with a voltage drop of 600mV, in a space-saving µMAX® package.
The MAX828/MAX829 combine low quiescent current and high efficiency. Oscillator control circuitry and four power MOSFETswitches are included on-chip. Applications include generating a -5V supply from a +5V logicsupply to power analogcircuitry. Both parts come in a 5- pin SOT23-5 package and candeliver 25mA with a voltage drop of 500mV.
For a similar device with logic-control ledshutdown, refer to the MAX1719/MAX1720/MAX1721. For applications requiring more power, the MAX860 delivers up to 50mA with a voltage drop of 600mV, in a space-saving µMAX® package.
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