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MAX1759 - Buck/Boost Regulating Charge Pump

General Description

The MAX1759 is a buck/boost regulating charge pump that generates a regulated output voltage from a single lithium-ion (Li+) cell, or two or three NiMH or alkaline cells for small hand-held portable equipment.

Key Features

  • o Regulated Output Voltage (Fixed 3.3V or Adjustable 2.5V to 5.5V) o 100mA Guaranteed Output Current o +1.6V to +5.5V Input Voltage Range o Low 50µA Quiescent Supply Current o 1µA Shutdown Mode o Load Disconnected from Input in Shutdown o High 1.5MHz Operating Frequency o Uses Small Ceramic Capacitors o Short-Circuit Protection and Thermal Shutdown o Small 10-Pin µMAX Package MAX1759 Ordering Information.

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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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19-1600; Rev 0; 1/00 Buck/Boost Regulating Charge Pump in µMAX General Description The MAX1759 is a buck/boost regulating charge pump that generates a regulated output voltage from a single lithium-ion (Li+) cell, or two or three NiMH or alkaline cells for small hand-held portable equipment. The MAX1759 operates over a wide +1.6V to +5.5V input voltage range and generates a fixed 3.3V or adjustable (2.5V to 5.5V) output (Dual Mode™). Maxim’s unique charge-pump architecture allows the input voltage to be higher or lower than the regulated output voltage. Despite its high 1.5MHz operating frequency, the MAX1759 maintains low 50µA quiescent supply current.