IS-CHPMP user manual 7850 east gelding drive ? scottsdale, az 85260 -3420 IS-CHPMP user manual b.doc page 1 of 6 toll free 1.877.2buynkk (877.228.9655) ? phone 480.991.0942 ? fax 480.998.1435 www.nkkswitches.com ? email engineering@nkkswitches.com 1209 IS-CHPMP user manual revision b nkk switches 7850 e. gelding drive scottsdale, az 85260 toll free 1-877-2buynkk (877-228-9655) phone 480-991-0942 fax 480-998-1435 e-mail all rights reserved worldwide nkk switches makes no warranty for the use of these products and assumes no responsibility for any err ors, which may appear in this document, nor does it make a commitment to update the information contained h erein. smart switch is trademark of nkk switches.
IS-CHPMP user manual 7850 east gelding drive ? scottsdale, az 85260 -3420 IS-CHPMP user manual b.doc page 2 of 6 toll free 1.877.2buynkk (877.228.9655) ? phone 480.991.0942 ? fax 480.998.1435 www.nkkswitches.com ? email engineering@nkkswitches.com 1209 table of contents table of contents .................................. ................................................... .....................2 1. general description ............................. ................................................... ..................3 2. electrical characteristics ...................... ................................................... .................4 3. pin configurations.............................. ................................................... ...................4 4. typical operating characteristics ............... ................................................... ........5 5. schematic....................................... ................................................... ..........................5 5. build of material ............................... ................................................... .....................6 5. board layout .................................... ................................................... ......................6
IS-CHPMP user manual 7850 east gelding drive ? scottsdale, az 85260 -3420 IS-CHPMP user manual b.doc page 3 of 6 toll free 1.877.2buynkk (877.228.9655) ? phone 480.991.0942 ? fax 480.998.1435 www.nkkswitches.com ? email engineering@nkkswitches.com 1209 1. general description. the IS-CHPMP is a dc/dc voltage step-up converter w ith an input of 2.7-5.5v and an output of 16v for u se in driving oled displays. the IS-CHPMP utilizes maxim? s max8574 step-up converter to take advantage of it s floating output during shutdown mode. a 2x4 .100? h eader is required to interface with charge pump. IS-CHPMP is rohs compliant. photo 1, primary side photo 2, secondary side 2. electrical characteristics ? ?? ? 2.7-5.5v input voltage. ? ?? ? 16v output voltage. ? ?? ? floating output when in shutdown mode. ? ?? ? current .05ua typical, 1ua maximum in shutdown mode .
IS-CHPMP user manual 7850 east gelding drive ? scottsdale, az 85260 -3420 IS-CHPMP user manual b.doc page 4 of 6 toll free 1.877.2buynkk (877.228.9655) ? phone 480.991.0942 ? fax 480.998.1435 www.nkkswitches.com ? email engineering@nkkswitches.com 1209 3. pin configurations pin name function 1 v3.3 input voltage supply between 2.7-5v. 2 v16 output voltage preset to 16v. 3 shtdn shutdown input. a logic high puts the max85 74 into normal operation. a logic low at shtdn places the max8574 into low- power shutdown mode. 4 gnd ground 5 gnd ground 6 shtdn shutdown input. a logic high puts the max85 74 into normal operation. a logic low at shtdn places the max8574 into low- power shutdown mode. 7 v16 output voltage preset to 16v. 8 v3.3 input voltage supply between 2.7-5v. illustration 1, pin configuration in relation to bo ard note: incorrect installation of the connector could damage the charge pump and/or the motherboard.
IS-CHPMP user manual 7850 east gelding drive ? scottsdale, az 85260 -3420 IS-CHPMP user manual b.doc page 5 of 6 toll free 1.877.2buynkk (877.228.9655) ? phone 480.991.0942 ? fax 480.998.1435 www.nkkswitches.com ? email engineering@nkkswitches.com 1209 4. typical operating characteristics illustration 2, output voltage vs load current output voltage (v) 4.1. testing was done using 3.3v input with constant loa d. load was set for 16v output operation then increased until output voltage dropped 200mv. 4.2. testing was done on eleven assemblies with a variat ion of 1% of graph. 5. schematic illustration 3, schematic
IS-CHPMP user manual 7850 east gelding drive ? scottsdale, az 85260 -3420 IS-CHPMP user manual b.doc page 6 of 6 toll free 1.877.2buynkk (877.228.9655) ? phone 480.991.0942 ? fax 480.998.1435 www.nkkswitches.com ? email engineering@nkkswitches.com 1209 6. build of material item count designation part number description value package 1 1 - p-chpmpd pcb/oled charge pump/rev d - - 2 1 c1 ma0805xr105k160r capacitor/1uf/16v/sm0805 x7 r 1uf sm0805 3 1 c2 c2012x5r0j475k capacitor/4.7uf/6.3v/sm0805 x 5r 4.7uf sm0805 4 1 c3 grm219r71e105ka88d capacitor/1uf/25v/sm0805 x7r 1uf sm0805 5 1 c4 grm2165c1h4r7cd01d capacitor/4.7pf/50v/sm080 5/c0g 10pf sm0805 6 1 d1 bat42w-v-gs08 diode/schottky/30v/0.200a/sod- 123 sod-123 7 1 j1 pppc042lfbn-rc header/2x4/gold/receptacle/fe male/2.54mm thr hole 8 1 l1 lqh32cn100k33l inductor/10uh/450ma/.300ohm/s md 10uh smd 9 1 r1 rk73h2attd6044f resistor/6.04m/1/8w/1%/sm080 5 6.04m sm0805 10 1 r2 rk73h2attd4993f resistor/499k/1/8w/1%/sm080 5 499k sm0805 11 1 u1 max8574eut+t ic/sm sot-23-6/lcd step-up dc- dc converter sot-23-6 7. board layout illustration 4, primary side illustration 5, secondary side note: no traces or ground plane shall be present un der the inductor.
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