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RICOH ELECTRONIC DEVICES CO., LTD.

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Step-down DCDC Controllers (Middle voltage: ~20V)

These products are middle voltage step-down DCDC controllers with an external output transistor.

Product Name Control Input Voltage Range [V] Output Voltage Range [V] Output Voltage Accuracy *1 Switching Frequency [kHz] Output Tr. Output Current Protection Circuit Other Features Package Datasheet
R1223 PWM,
PWM/VFM Auto Switching
2.3 to 13.2 1.5 to 5.0 ±2% 300, 500 External Depends on external MOSFET Latch,
Reset
Soft-Start SOT-23-5 Consumer
R1224 PWM,
PWM/VFM Auto Switching
2.3 to 18.5 1.2 to 6.0 ±2% 180, 300, 500 External Depends on external MOSFET Reset Soft-Start
UVLO
SOT-23-5 Consumer
1.0 to VIN,
Ext. Adjustable
R1225 PWM,
PWM/VFM Auto Switching
2.3 to 18.5 1.2 to 6.0 ±2% 180, 300, 500 External Depends on external MOSFET Latch Soft-Start
UVLO
SOT-23-6W Consumer
  • *1For the externally adjustable output voltage type, this is a feedback voltage accuracy.

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