MAX608ESA+

The MAX608ESA+ is a 5V or adjustable, low voltage, step-up DC-DC controller in 8 pin NSOIC package. This BiCMOS, step-up, switch mode power supply controller provides a preset 5V output, in addition to adjustable output operation. Its unique control scheme combines the advantages of pulse frequency modulation (low supply current) and pulse width modulation (high efficiency with heavy loads), providing high efficiency over a wide output current range as well as increased output current capability over previous PFM devices. In addition, the external sense resistor and power transistor allow user to tailor output current capability for each application. The device has a shutdown mode that reduces supply current to 5µA max. It is used in high efficiency DC-DC converters, battery-powered applications, positive LCD bias generators and portable communicators.

• Supply voltage range is 1.8V to 16.5V
• Operating temperature range from -40°C to 85°C
• 85% efficiency for 30mA to 1.5A load currents
• Up to 10W output power
• Max supply current of 110µA
• Preset 5V or adjustable output (3V to 16.5V)
• Current limited PFM control scheme
• Up to 300KHz switching frequency
• Battery-Powered Applications; High-Efficiency DC-DC Converters; Portable Communicators; Positive LCD-Bias Generators

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Power Management, Portable Devices

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