IS-CHPMP User Manual 7850 East Gelding Drive • Scottsdale, AZ 85260-3420 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 <[email protected]> All Rights Reserved Worldwide NKK Switches makes no warranty for the use of these products and assumes no responsibility for any errors, which may appear in this document, nor does it make a commitment to update the information contained herein. Smart Switch is trademark of NKK Switches. IS-CHPMP User Manual B.doc Toll Free 1.877.2BUYNKK (877.228.9655) • Phone 480.991.0942 • Fax 480.998.1435 www.nkkswitches.com • Email [email protected] Page 1 of 6 1209 IS-CHPMP User Manual 7850 East Gelding Drive • Scottsdale, AZ 85260-3420 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 B.doc Toll Free 1.877.2BUYNKK (877.228.9655) • Phone 480.991.0942 • Fax 480.998.1435 www.nkkswitches.com • Email [email protected] Page 2 of 6 1209 IS-CHPMP User Manual 7850 East Gelding Drive • Scottsdale, AZ 85260-3420 1. General Description. The IS-CHPMP is a DC/DC voltage step-up converter with an input of 2.7-5.5V and an output of 16V for use in driving OLED displays. The IS-CHPMP utilizes Maxim’s MAX8574 step-up converter to take advantage of its floating output during shutdown mode. A 2x4 .100” header 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 B.doc Toll Free 1.877.2BUYNKK (877.228.9655) • Phone 480.991.0942 • Fax 480.998.1435 www.nkkswitches.com • Email [email protected] Page 3 of 6 1209 IS-CHPMP User Manual 7850 East Gelding Drive • Scottsdale, AZ 85260-3420 3. Pin Configurations Pin Name 1 V3.3 2 V16 3 SHTDN 4 5 6 GND GND SHTDN 7 8 V16 V3.3 Function Input voltage supply between 2.7-5V. Output voltage preset to 16V. Shutdown input. A logic high puts the MAX8574 into normal operation. A logic low at SHTDN places the MAX8574 into lowpower shutdown mode. Ground Ground Shutdown input. A logic high puts the MAX8574 into normal operation. A logic low at SHTDN places the MAX8574 into lowpower shutdown mode. Output voltage preset to 16V. Input voltage supply between 2.7-5V. Illustration 1, Pin Configuration in relation to board Note: Incorrect installation of the connector could damage the charge pump and/or the motherboard. IS-CHPMP User Manual B.doc Toll Free 1.877.2BUYNKK (877.228.9655) • Phone 480.991.0942 • Fax 480.998.1435 www.nkkswitches.com • Email [email protected] Page 4 of 6 1209 IS-CHPMP User Manual 7850 East Gelding Drive • Scottsdale, AZ 85260-3420 4. Typical Operating Characteristics OUTPUT VOLTAGE (V) Illustration 2, Output Voltage vs Load Current 4.1. Testing was done using 3.3V input with constant load. Load was set for 16V output operation then increased until output voltage dropped 200mV. 4.2. Testing was done on eleven assemblies with a variation of 1% of graph. 5. Schematic Illustration 3, Schematic IS-CHPMP User Manual B.doc Toll Free 1.877.2BUYNKK (877.228.9655) • Phone 480.991.0942 • Fax 480.998.1435 www.nkkswitches.com • Email [email protected] Page 5 of 6 1209 IS-CHPMP User Manual 7850 East Gelding Drive • Scottsdale, AZ 85260-3420 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 X7R 1UF SM0805 3 1 C2 C2012X5R0J475K CAPACITOR/4.7UF/6.3V/SM0805 X5R 4.7UF SM0805 4 1 C3 GRM219R71E105KA88D CAPACITOR/1UF/25V/SM0805 X7R 1UF SM0805 5 1 C4 GRM2165C1H4R7CD01D CAPACITOR/4.7PF/50V/SM0805/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/FEMALE/2.54MM THR HOLE 8 1 L1 LQH32CN100K33L INDUCTOR/10UH/450MA/.300OHM/SMD 10UH SMD 9 1 R1 RK73H2ATTD6044F RESISTOR/6.04M/1/8W/1%/SM0805 6.04M SM0805 10 1 R2 RK73H2ATTD4993F RESISTOR/499K/1/8W/1%/SM0805 499K 11 1 U1 MAX8574EUT+T IC/SM SOT-23-6/LCD STEP-UP DC-DC CONVERTER SM0805 SOT-23-6 7. Board Layout Illustration 4, Primary side Illustration 5, Secondary side Note: No traces or ground plane shall be present under the inductor. IS-CHPMP User Manual B.doc Toll Free 1.877.2BUYNKK (877.228.9655) • Phone 480.991.0942 • Fax 480.998.1435 www.nkkswitches.com • Email [email protected] Page 6 of 6 1209