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Step-up DCDC Converter

Step-up DCDC Converters (For white LED/ For PMOLED and General use)

For White LEDs

Internal Diode

Product Name Control Input Voltage Range Output Voltage Range VFB Voltage Switching
Frequency
Lx Current Limit*1 OVP Voltage
(Typ.)
Other Features Package Datasheet
R1201 PWM 1.8V to 5.5V Up to 21V,
Ext.Adjustable
0.2V 1MHz,
1.2MHz
700mA 9.5V, 14.0V, 18.5V, 20.6V, 21.6V UVLO Soft-Start
LED Adjust
SOT-23-6 Consumer
Design guide
R1202 PWM 1.8V to 5.5V Up to 22.2V,
Ext.Adjustable
0.2V 1.2MHz 350mA,
700mA
14.0V, 23.0V UVLO Soft-Start
Thermal Shutdown
LED Adjust
DFN1616-6B
TSOT-23-6
Consumer
Design guide
R1205L PWM 1.8V to 5.5V Up to 24.2V,
Ext.Adjustable
0.2V,
0.4V
1.2MHz 350mA,
700mA
25.0V UVLO Soft-Start
Thermal LED Adjust
DFN1616-6B Consumer
Design guide
R1205N
R1207N
PWM 1.8V to 5.5V Up to 24.2V,
Ext.Adjustable
0.2V 1.2MHz 350mA,
700mA
25.0V UVLO Soft-Start
Thermal LED Adjust
TSOT-23-6*2 Consumer
Design guide
R1207 PWM 1.8V to 5.5V Up to 24.2V,
Ext.Adjustable
0.2V,
0.4V
1.2MHz 350mA,
700mA
25.0V UVLO Soft-Start
Thermal LED Adjust
TSOT-23-6*2 Consumer
Design guide
R1218 PWM 1.8V to 5.5V Up to 17V,
Ext.Adjustable
0.2V 1.2MHz 700mA 9.5V, 14.0V, 18.5V UVLO Soft-Start SOT-23-6 Consumer
Design guide
  • *1Lx current limit is different from output current.
  • *2The pin-layout of R1205N and that of R1207N are different by 180 degrees. Also, the pin-layout of R1203N and that of R1206N are different by 180 degrees.

Tap to see the table

External Diode

Product Name Control Input Voltage Range Output Voltage Range VFB Voltage Switching
Frequency
Lx Current Limit*1 OVP Voltage
(Typ.)
Other Features Package Datasheet
R1203L PWM 1.8V to 5.5V Up to 28.7V,
Ext.Adjustable
0.2V 1.2MHz 700mA 29.5V UVLO Soft-Start
LED Adjust
DFN1616-6B Consumer
Design guide
R1203N
R1206N
PWM 1.8V to 5.5V Up to 28.7V,
Ext.Adjustable
0.2V 1.2MHz 700mA 29.5V UVLO Soft-Start
LED Adjust
SOT-23-6*2 Consumer
Design guide
R1206 PWM 1.8V to 5.5V Up to 28.7V,
Ext.Adjustable
0.2V 1.2MHz 700mA 29.5V UVLO Soft-Start
LED Adjust
SOT-23-6*2 Consumer
Design guide
R1204 PWM 2.3V to 5.5V Up to 40.2V,
Ext.Adjustable
0.2V,
0.4V
1MHz
750kHz
900mA 23.0V, 33.0V, 42.0V, UVLO Soft-Start
Thermal LED Adjust
DFN(PLP)1820-6
TSOT-23-6
Consumer
Design guide
R1218 PWM 1.8V to 5.5V Up to 30V,
Ext.Adjustable
0.2V 1.2MHz 700mA 23.0V, 27.5V, 31.5V UVLO Soft-Start SOT-23-6 Consumer
Design guide
  • *1Lx current limit is different from output current.
  • *2The pin-layout of R1205N and that of R1207N are different by 180 degrees. Also, the pin-layout of R1203N and that of R1206N are different by 180 degrees.

Tap to see the table

For 2 or 4 Strings of White LEDs

External Diode

Product Name Control Input Voltage Range Output Voltage Range LED
Current
(Max.)
LED
Current
Accuracy
Switching
Frequency
Lx Current Limit*1 OVP Voltage
(Typ.)
Other Features Package Datasheet
R1214 PWM,
PWM/VFM
Auto Switching
2.7V to 5.5V Up to 29V,
Ext.Adjustable
40mA x2 ±2%,
±1.5%
450kHz,
750kHz,
450kHz
1.9A 35.0V UVLO Soft-Start
Thermal LED Adjust
2 strings
WLCSP-9-P1 Consumer
Design guide
R1208 PWM 2.7V to 22.0V Up to 42V,
Ext.Adjustable
80mA x4 ±3% 750kHz,
450kHz
2A 23.0V, 33.0V, 43.5V UVLO Soft-Start
Thermal LED Adjust
4 strings
DFN(PLP)2730-12 Consumer
Design guide
  • *1Lx current limit is different from output current.

Tap to see the table

For PMOLED and General Use

Internal Diode

Product Name Control Input Voltage Range Output Voltage Range VFB
Voltage
Switching
Frequency
Lx Current Limit*1 OVP Voltage
(Typ.)
Other Features Package Datasheet
R1200 PWM 2.3V to 5.5V Up to 20V,
Ext.Adjustable
1.0V 1.2MHz 700mA 17.0V, 19.0V, 21.0V, UVLO Soft-Start
Shutdown Discharge
DFN1616-6
DFN(PLP)1820-6
SOT-23-6
Consumer
Design guide
R1202 PWM 2.3V to 5.5V Up to 22.2V,
Ext.Adjustable
1.0V 1.2MHz 350mA,
700mA
14.0V, 17.0V, 19.0V, 21.0V, 23.0V UVLO Soft-Start
Thermal Shutdown
Discharge
DFN1616-6B
TSOT-23-6
Consumer
Design guide
R1205L PWM 2.3V to 5.5V Up to 24.2V,
Ext.Adjustable
1.0V 1.2MHz 350mA,
700mA
25.0V UVLO Soft-Start
Thermal
DFN1616-6B Consumer
Design guide
R1205N
R1207N
PWM 2.3V to 5.5V Up to 24.2V,
Ext.Adjustable
1.0V 1.2MHz 350mA,
700mA
25.0V UVLO Soft-Start
Thermal
TSOT-23-6*2 Consumer
Design guide
R1207N PWM 2.3V to 5.5V Up to 24.2V,
Ext.Adjustable
1.0V 1.2MHz 350mA,
700mA
25.0V UVLO Soft-Start
Thermal
TSOT-23-6*2 Consumer
Design guide
  • *1Lx current limit is different from output current.
  • *2The pin-layout of R1205N and that of R1207N are different by 180 degrees. Also, the pin-layout of R1203N and that of R1206N are different by 180 degrees.

Tap to see the table

External Diode

Product Name Control Input Voltage Range Output Voltage Range VFB
Voltage
Switching
Frequency
Lx Current Limit*1 OVP Voltage
(Typ.)
Other Features Package Datasheet
R1204 PWM,
PWM/VFM
Auto Switching
2.3V to 5.5V Up to 40.2V,
Ext.Adjustable
1.0V 1MHz,
750kHz
900mA 23.0V, 33.0V, 42.0V UVLO Soft-Start
Thermal
DFN(PLP)1820-6
TSOT-23-6
Consumer
Design guide
  • *1Lx current limit is different from output current.
  • *2The pin-layout of R1205N and that of R1207N are different by 180 degrees. Also, the pin-layout of R1203N and that of R1206N are different by 180 degrees.

Tap to see the table

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