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R5326N012A Datasheet(PDF) 6 Page - RICOH electronics devices division |
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R5326N012A Datasheet(HTML) 6 Page - RICOH electronics devices division |
6 / 35 page R5326x 6 TYPICAL APPLIATION OUT2 OUT1 IN VOUT2 VOUT1 GND CE1 CE2 VDD R5326x Series C3 C2 C1 (External Components) Capacitor; Ceramic Type C1: 1 µF Ceramic C2, C3: Refer to the following table 1.Mounting on PCB Make VDD and GND lines sufficient. If their impedance is high, noise pickup or unstable operation may result. Connect a capacitor with a capacitance value as much as 1.0 µF or more as C1 between VDD and GND pin, and as close as possible to the pins. Set external components, especially the output capacitor, as close as possible to the ICs, and make wiring as short as possible. 2.Phase Compensation In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For this purpose, use capacitos C2 and C3 which are shown below table “Recommended Ceramic capacitor for output “If you use a tantalum type capacitor and ESR value of the capacitor is Iarge, output might be unstable. Evaluate your circuit with considering frequency characteristics. 3. Recommended Ceramic capacitor for Output (C2, C3) Minimum Input Voltage Output Voltage Range 1.4V < = VIN < 1.65 1.65 < = VIN 0.8V < = VOUT < 1.2V 3.3 µF or more 2.2 µF or more 1.2V < = VOUT < = 4.2V 3.3 µF or more 1.0 µF or more Output Capacitors 3.3 µF (Murata) GRM219B31A335KE18B 2.2 µF (Murata) GRM155B30J225M 1.0 µF (Murata) GRM155B31A105KE15 |
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