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Step-down DC/DC Converter (Middle voltage)

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

Product Name Version Control Input Voltage Range Output Voltage Range Output
Voltage
Accuracy *1
Switching
Frequency
Output Tr. Output Current Protection Circuit
Type
Other Features Package Data Sheet
(PDF)
R1223N xx2A/B PWM/VFM Auto Switching 2.3V to 13.2V 1.5V to 5.0V ±2% 300kHz:
xxxA/C/E/G,
500kHz:
xxxB/D/F/H
External Depends on external MOSFET Latch Soft-Start SOT-23-5 DL
xx2C/D PWM
xx2E/F PWM/VFM Auto Switching Reset
xx2G/H PWM
R1224N xx2E/F/L PWM/VFM Auto Switching 2.3V to 18.5V 1.2V to 6.0V ±2% 180kHz: xxxL/M,
300kHz: xxxE/G,
500kHz: xxxF/H
External Depends on external MOSFET Reset Soft-Start
UVLO
SOT-23-5 DL
xx2G/H/M PWM
102G/H/M 1.0V to VIN,
Ext. Adjustable
R1225N xx2C/D/K PWM 2.3V to 18.5V 1.2V to 6.0V ±2% 180kHz: xxxJ/K,
300kHz: xxxA/C,
500kHz: xxxB/D
External Depends on external MOSFET Latch Soft-Start
UVLO
SOT-23-6W DL
xx2A/B/J PWM/VFM Auto Switching
  • *1For the externally adjustable output voltage type, this is a feedback voltage accuracy.

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