- on Power Supplies
- Published in issue 7/2001 on page 0
Step-Up/Step-Down Switching Regulator
If you wish to convert a range of possible input voltages into an output voltage that lies somewhere in the middle of that range, a regulator that can automatically switch between step-up and step-down modes is required. Such a device is the MAX1759 from Maxim (www.maxim-ic.com), which can take in an input voltage between +1.6 V and +5.5 V and generate an output between +2.5 V and +5.5 V. It is based around a switched capacitor (C2).A further special feature of the MAX1759 is the automatic detection of the potential divider R3/R4.