MAX1748EVKIT

Features of the MAX1748EVKIT are:(1)+2.7V to +5.5V input range (as configured);(2)output voltages +10V output at 200mA (boost switching) +15V output >20mA (positive charge-pump regulator) -5V output >20mA (negative charge-pump regulator);(3)outputs are adjustable with resistors;(4)>85% efficiency;(5)internal MOSFET switches;(6)0.1A (typ) IC shutdown current;(7)1MHz boost switching frequency,500kHz charge-pump switching frequency;(8)low profile;(9)evaluates MAX1779 (component replacement required);(10)surface-mount components;(11)fully assembled and tested.

The MAX1748EVKIT is fully assembled and tested.Perform the following steps to verify board operation for a +10V output. Do not turn on the power supply until all connections are completed:(1)connect a +2.7VDC to +5.5VDC power supply to the PIN pad. Connect the supply ground to the GND pad;(2)connect a voltmeter to the V1 pad;(3)verify that shunts JU1 (SHDN) are across pins 1 and 2 and that shunts JU4 (SUPP) and JU5 (SUPN) are across pins 2 and 3;(4)turn on the power supply and verify that the main output (V1) is +10V;(5)verify that the negative charge-pump regulator output (VN) is -5V;(6)verify that the positive charge-pump regulator output (VP) is +15V.