MP204KK Apex Microtechnology

MP204 4-Channel Power Amplifier FEATURES 4 Channel Power Amplifier for Ricoh GEN4/GEN5 Print Heads Operate from Single High Current Supply 7.5A Pulsed Current (C=320nF, R=0.1 15V/s) 1.5A Continuous Current Programmable Current Limit APPLICATIONS Ricoh GEN4 and GEN5 Print Heads DESCRIPTION The MP204 is a high output current quad channel amplifier for driving the Ricoh GEN4 and GEN5 print heads. The MP204 utilizes ICs combined with discrete semiconductors and passive elements on a thermally conductive insulated metal substrate, delivering very high power from a compact module. The amplifier gain is fixed at 14V/V. Internal compensation provides optimum slew rate and insures stability. The only external components required are the current limit resistors R , a series isolation resistor R and power supply LIM S bypass capacitors. Figure 1: Equivalent Schematic (Channel A) +V B +V S CHAN IN A + BIAS & INPUT OUTPUT CHAN A OUT OVERCURRENT AMPLIFIER BUFFER LIMIT - PGND -V B +R LIM CHANNEL A/B AGND TEMP A/B OUT +V S TEMP SENSOR Apex Microtechnology Inc. Aug 2019 www.apexanalog.com All rights reserved MP204U Rev BMP204 PINOUT AND DESCRIPTION TABLE Figure 2: External Connections 42 PGND D PGND D 41 1 PGND C IL D 40 2 39 PGND C IL D 3 38 IL C +VS D 37 4 IL C +VS D MP204 5 +VS C +VB CD 36 (Viewed from 6 +VS C TEMP CD 35 backplate) 7 34 OUT C TEMP AB 8 SGND CD -VB CD 33 9 IN D OUT D 32 10 IN C N/C 31 11 30 IN A +VB AB 12 29 IN B N/C 13 OUT A 28 SGND AB 14 OUT B -VB AB 27 15 26 PGND B PGND A 16 PGND B PGND A 25 17 IL B IL A 24 18 IL B IL A 23 19 +VS B +VS A 22 20 21 +VS B +VS A 2 MP204U Rev B