MAX629EVKIT

Features of the MAX629EVKIT are:(1)output voltage:+24V positive,-20V negative;(2)battery input voltage:+0.8V to VOUT (positive output),+0.8V to +15V (negative output);(3)+2.7V to +5.5V VCC supply range;(4)up to 20mA output current;(5)internal 28V N-channel switch;(6)1A (Max) IC shutdown current;(7)up to 300kHz switching frequency;(8)surface-mount components;(9)fully assembled and tested.

The MAX629EVKIT is fully assembled and tested.Follow these steps to verify board operation. VCC and VBATT are separated on each circuit to demonstrate operation of VBATT down to 0.8V. VCC and VBATT can be connected together and to a single supply from 2.7V to 5.5V.

The MAX629EVKIT features a shutdown mode that reduces quiescent current to less than 1A to preserve battery life.The two-pin header JU1 selects shutdown mode for the positive output, and JU3 selects shutdown mode for the negative output. Tables 1 and 2 list the selectable jumper options.