Datasheet for Consumer R1540x (Ricoh) - 7
| Manufacturer | Ricoh |
| Description | High Noise Immunity 42 V Input Voltage 70 mA Voltage Tracker for Consumer Applications |
| Pages / Page | 16 / 7 — R1540x. TYPICAL APPLICATION. R1540x Typical Application. TECHNICAL NOTES. … |
| File Format / Size | PDF / 901 Kb |
| Document Language | English |
R1540x. TYPICAL APPLICATION. R1540x Typical Application. TECHNICAL NOTES. Phase Compensation. PCB Layout
Model Line for this Datasheet
Text Version of Document
R1540x
NO.EA-513-190411
TYPICAL APPLICATION TYPICAL APPLICATION
VDD VOUT CIN
R1540x
COUT CE/ADJ GND CIN = Ceramic 0.1 µF CCE/ADJ COUT = Ceramic 10 µF CCE/ADJ = Ceramic 0.1 µF
R1540x Typical Application TECHNICAL NOTES Phase Compensation
R1540x adopts capacitance and Equivalent Series Resistance (ESR) for phase compensation to ensure stable operation even with load varying current. For this end, the capacitor of 10 μF or more is essential. A certain amount of ESR may cause unstable output voltage. Fully take temperature and frequency characteristics into consideration when evaluating the circuit. Place the capacitor of 0.1 μF or more between VDD and GND with using short leads and short printed circuit traces.
PCB Layout
SOT-23-5 package: connect Nos. 2 and 5 of GND pin together. HSOP-8E package: connect Nos. 5 and 6 of GND pin together. 7
NO.EA-513-190411
TYPICAL APPLICATION TYPICAL APPLICATION
VDD VOUT CIN
R1540x
COUT CE/ADJ GND CIN = Ceramic 0.1 µF CCE/ADJ COUT = Ceramic 10 µF CCE/ADJ = Ceramic 0.1 µF
R1540x Typical Application TECHNICAL NOTES Phase Compensation
R1540x adopts capacitance and Equivalent Series Resistance (ESR) for phase compensation to ensure stable operation even with load varying current. For this end, the capacitor of 10 μF or more is essential. A certain amount of ESR may cause unstable output voltage. Fully take temperature and frequency characteristics into consideration when evaluating the circuit. Place the capacitor of 0.1 μF or more between VDD and GND with using short leads and short printed circuit traces.
PCB Layout
SOT-23-5 package: connect Nos. 2 and 5 of GND pin together. HSOP-8E package: connect Nos. 5 and 6 of GND pin together. 7
