ANALOG DEVICES MAX1721EUT+T DC/DC Adjustable Charge Pump Voltage Inverter, 1.4V to 5.5V in, 25 mA out, 125 kHz, SOT-23-6

The MAX1721EUT+T is a switched capacitor voltage inverter with shutdown in 6 pin SOT-23 package. This monolithic, CMOS charge pump inverter the voltage applied to input and accept input voltage ranging from +1.4V to +5.5V at TA = + 25°C and operate at 125KHz. High efficiency, small external components and logic controlled shutdown make this device ideal for both battery powered and board level voltage conversion applications. An oscillator control circuitry and four power MOSFET switches are included on-chip. A typical application is generating a -5V supply from a +5V logic supply to power analogue circuitry. It is used in local negative supply from a positive supply, small LCD panels, GaAs PA bias supply, handy terminals and PDAs.

• Logic controlled shutdown of 1nA
• Voltage conversion efficiency is 99.9%
• Output current is 25mA, maximum oscillator frequency is 180KHz
• Maximum quiescent supply current is 650µA at TA = +25°C
• Shutdown supply current is 0.02µA at TA = +85°C (SHDN(complementary) = GND)
• Wake-up time from shutdown is 80µs at IOUT = 5mA
• Requires only two 1µF capacitors

Applications

Power Management, Industrial, Portable Devices

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party