The MAX608 low-voltage step-up controller operates from a 1.8V to 16.5V input voltage range. Pulse-frequency-modulation (PFM) control provides high efficiency at heavy loads, while using only 85µA (typical) when operating with no load. In addition, a logic-controlled shutdown mode reduces supply current to 2µA typical. The output voltage is factory-set at 5V or can be adjusted from 3V to 16.5V with an external resistor divider. The MAX608 is ideal for two- and three-cell battery powered systems. An operating frequency of up to 300kHz allows use with small surface-mount components. The MAX608 operates in “bootstrapped” mode only (with the chip supply, OUT, connected to the DC-DC output). For a 12V output without external resistors, or for non-bootstrapped applications (chip supply connected to input voltage), refer to the pin-compatible MAX1771.
The product datasheet is available here to view
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