MAX774, MAX775, MAX776 -5V/-12V/-15V Or Adjustable, High-Efficiency, Low IQ Inverting DC-to-DC Controllers

The MAX774 MAX775 MAX776 inverting Switching Regulators deliver high efficiency over three decades of load current. A unique current-limited, pulse-frequency modulated (PFM) control scheme provides the benefits of pulse-width modulation (high efficiency with heavy loads), while using less than 100A of supply current (vs. 2mA to 10mA for PWM converters). The result is high efficiency over a wide range of loads.
These ICs also use tiny external components; their high switching frequency (up to 300kHz) allows for less than 5mm diameter surface-mount magnetics.
The MAX774 MAX775 MAX776 accept input voltages from 3V to 16.5V, and have preset output voltages of -5V, -12V, and -15V, respectively. Or, the output voltage CAN be user-adjusted with two resistors. Maximum VIN - VOUT differential voltage is limited only by the break-down voltage of the chosen external Switch Transistor
These inverters use external P-Channel MOSFET switches, allowing them to power loads up to 5W. If less power is required, use the MAX764 MAX765 MAX766 inverting Switching Regulators with on-board MOSFETs
By Maxim Integrated Products