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? ? evaluates: max1703 ."9 a??? ________________________________________________________________ maxim integrated products 1 qty description c1, c2, c3 3 c4 1 c5, c6 2 220?, 10v low-esr tantalum capacitors avx tpse227m010r0100 or sprague 593d227x0010e c7 1 d1 1 0.5a, 20v schottky diode motorola mbr0520l l1 1 j1, j2 2 not installed, optional user capacitor 100?, 10v low-esr tantalum capacitor: avx tpsd107m010r0100 or sprague 593d107x0010d 0.22?, 25v ceramic capacitors supplier phone fax avx (803) 946-0690 (803) 626-3123 ? ?y? _____________________________ designation 4.7?, 3.2a power inductor sumida cdh74-4r7 coilcraft do3316-4r7, coiltronics up2b-4r7 or sumida cdrh104, 4746-jps-007 3-pin jumpers ? ??? _____________________________ j ___________________________________ coilcraft (847) 639-6400 (847) 639-1469 coiltronics (561) 241-7876 (561) 241-9339 motorola (602) 244-5303 (602) 244-4015 part MAX1703EVKIT 0? to +70? temp. range pin-package 16 narrow so j3, j4 2 2-pin jumpers r1, r7, r5 3 100k 1% resistors r2, r4, r6 0 not installed, user-selected resistor r3 1 10 , 5% resistor r8, r9 2 100k , 5% resistors u1 1 max1703ese none 4 shunts none 1 3.40?x 2.40?printed circuit board none 1 max1703 data sheet r10, r11 2 1m , 5% resistors sprague (603) 224-1961 (603) 224-1430 sumida (847) 956-0666 (847) 956-0702 19-1336; rev 2; 11/98
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{ ??w; jumper shunt position pin connection max1703 operation j1 1 & 2 on connected to gnd the max1703 is enabled. 2 & 3 on connected to vout the max1703 is disabled. open on is not controlled by the board. on must be driven by a signal connected to the on pad. j2 1 & 2 clk/sel pin connected to gnd low-power mode, the max1703 operates in the pfm mode. 2 & 3 clk/sel pin connected to vout high-power mode, the max1703 operates in the pwm mode. open clk/sel connected to clk/sel pad clk/sel pin can be driven by an external source to select the power mode or a 200khz to 400khz signal to control the switching frequency. j3 shorted fb pin connected to gnd vout preset to 5v. open fb pin connected to the resistor divider output voltage determined by the r4-r5 resistor divider. note: a resistor must be installed in r4 to set the output voltage before removing the shunt. j4 shorted vout connected to pull-up resistors this jumper is necessary for normal circuit operation. open the pull-up resistors are disconnected the j4 shunt should only be removed when testing the max1703 shutdown current.
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5's`ts?t|?7?!?b?vb?-y`?b{ 4 _____________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 1998 maxim integrated products is a registered trademark of maxim integrated products. evaluates: max1703 ."9 a???
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