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MAX776 - -5V/-12V/-15V or Adjustable / High-Efficiency / Low IQ Inverting DC-DC Controllers

Description

The MAX774/MAX775/MAX776 inverting switching regulators deliver high efficiency over three decades of load current.

Features

  • o 85% Efficiency for 5mA to 1A Load Currents o Up to 5W Output Power o 100µA (max) Supply Current o 5µA (max) Shutdown Current o 3V to 16.5V Input Range o -5V (MAX774), -12V (MAX775), -15V (MAX776), or Adjustable Output Voltage o Current-Limited PFM Control Scheme o 300kHz Switching Frequency Ordering Information PART MAX774CPA MAX774CSA MAX774C/D MAX774EPA MAX774ESA MAX774MJA TEMP RANGE 0°C to +70°C 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C -55°C to +125°C.
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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MAX774/MAX775/MAX776 19-0191; Rev 2; 12/02 EVAALVUAAILTAIOBNLEKIT -5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ Inverting DC-to-DC Controllers General Description The MAX774/MAX775/MAX776 inverting switching regulators deliver high efficiency over three decades of load current. A unique current-limited, pulsefrequency modulated (PFM) control scheme provides the benefits of pulse-width modulation (high efficiency with heavy loads), while using less than 100µA 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.
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