MAX765EPA+ (MAXIM INTEGRATED PRODUCTS)

The MAX765EPA+ is a high efficiency, low IQ DC to DC inverter in 8 pin DIP package. This inverting switching regulator is highly efficient over a wide range of load currents delivering up to 1.5W. A unique, current limited pulse frequency modulation (PFM) control scheme combines benefits of traditional PFM converters with benefits of PWM converters. Like PWM converters, the MAX765 is highly efficient at heavy loads and like PFM devices it has less than 120µA of supply current (2mA to 10mA for PWM device). The output voltage is preset at -12V and it can also be adjusted from -1V to -16V using two external resistors (dual mode). The MAX765 uses miniature external components and its high switching frequency of up to 300KHz allows for less than 5mm diameter surface mount magnetics. A standard 47µH inductor is ideal for most applications, so magnetic design is not necessary. It is used in LCD bias generators, LAN adapters, remote data acquisition systems and battery powered applications.