Step-up DC/DC Converter

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

For White LEDs

Diode Product Name Version Control Input Voltage Range Output Voltage Range VFB Voltage VFB Voltage
Accuracy
Switching
Frequency
Lx Current
Limit*1
OVP Voltage
(Typ.)
Other Features? Package Data Sheet
(PDF)
Design
Guide
(PDF)
Internal R1201N 021/023 PWM 1.8V to 5.5V Up to 20V,
Ext.Adjustable
0.2V ±10mV 1MHz
: 0x1/2
1.2MHz
: 0x3/4
700mA 9.5V UVLO
Soft-Start
LED Adjust
SOT-23-6 Download Download
031/033 14.0V
041/043 18.5V
051/053 20.6V
052/054 1.8V to 4.5V Up to 21V,
Ext.Adjustable
21.6V
R1202x 3xxD PWM 1.8V to 5.5V Up to 22.2V,
Ext.Adjustable
0.2V ±10mV 1.2MHz 350mA
700mA
14.0V UVLO
Soft-Start
Thermal
Shutdown
LED Adjust
DFN1616-6B
TSOT-23-6
Download
1.08MB
Download
7xxD 23.0V
R1205L 8x1B PWM 1.8V to 5.5V Up to 24.2V,
Ext.Adjustable
0.2V ±10mV 1.2MHz 350mA
700mA
25.0V UVLO
Soft-Start
Thermal
LED Adjust
DFN1616-6B Download Download
8x1C 0.4V
R1205N
R1207N
8x3B PWM 1.8V to 5.5V Up to 24.2V,
Ext.Adjustable
0.2V ±10mV 1.2MHz 350mA
700mA
25.0V UVLO
Soft-Start
Thermal
LED Adjust
TSOT-23-6*2 Download Download
R1207N 8x3B PWM 1.8V to 5.5V Up to 24.2V,
Ext.Adjustable
0.2V ±10mV 1.2MHz 350mA
700mA
25.0V UVLO
Soft-Start
Thermal
LED Adjust
TSOT-23-6*2 Download Download
8x3C 0.4V
R1218N 021A PWM 1.8V to 5.5V Up to 17V,
Ext.Adjustable
0.2V ±10mV 1.2MHz 700mA 9.5V UVLO
Soft-Start
SOT-23-6 Download Download
031A 14.0V
041A 18.5V
External R1203L 071B PWM 1.8V to 5.5V Up to 28.7V,
Ext.Adjustable
0.2V ±10mV 1.2MHz 700mA 29.5V UVLO
Soft-Start
LED Adjust
DFN1616-6B Download Download
R1203N
R1206N
071B PWM 1.8V to 5.5V Up to 28.7V,
Ext.Adjustable
0.2V ±10mV 1.2MHz 700mA 29.5V UVLO
Soft-Start
LED Adjust
SOT-23-6*2 Download Download
R1206N 071B PWM 1.8V to 5.5V Up to 28.7V,
Ext.Adjustable
0.2V ±10mV 1.2MHz 700mA 29.5V UVLO
Soft-Start
LED Adjust
SOT-23-6*2 Download Download
R1204x 11xA/D PWM 2.3V to 5.5V Up to 40.2V,
Ext.Adjustable
0.2V ±10mV 1MHz : xxxA
750kHz : xxxD
900mA 23.0V UVLO
Soft-Start
Thermal
LED Adjust
DFN(PLP)
1820-6

TSOT-23-6
Download Download
21xA/D 33.0V
31xA/D 42.0V
11xG/H 0.4V 1MHz(G)
750kHz(H)
23.0V
21xG/H 33.0V
31xG/H 42.0V
R1218N 052A PWM 1.8V to 5.5V Up to 30V,
Ext.Adjustable
0.2V ±10mV 1.2MHz  700mA 23.0V UVLO
Soft-Start
SOT-23-6 Download Download
062A 27.5V
072A 31.5V
Diode Product Name Version Control Input Voltage Range Output Voltage Range VFB Voltage VFB Voltage
Accuracy
Switching
Frequency
Lx Current
Limit*1
OVP Voltage
(Typ.)
Other Features? Package Data Sheet
(PDF)
Design
Guide
(PDF)
  • *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.

For 2 or 4 Strings of White LEDs

Diode Product Name Version 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 Data Sheet
(PDF)
Design
Guide
(PDF)
External R1214Z 211A/C PWM/VFM
Auto
Switching
2.7V to 5.5V Up to 29V,
Ext.Adjustable
40mA x2 ±2% :
xxxA/B
±1.5% :
xxxC/D
450kHz 1.9A 35.0V UVLO
Soft-Start
Thermal
LED Adjust
2 strings
WLCSP-9-P1 Download
1.56MB
Download
221A/C 750kHz
211B PWM 450kHz
211D
R1208K 112A/B PWM 2.7V to 22.0V Up to 42V,
Ext.Adjustable
80mA x4 ±3% 750kHz(A)
450kHz(B)
2A 23.0V UVLO
Soft-Start
Thermal
LED Adjust
4 strings
DFN(PLP)
2730-12
Download Download
212A/B 33.0V
312A/B 43.5V
  • *1Lx current limit is different from output current.

For PMOLED and General Use

Diode Product Name Version Control Input Voltage Range Output Voltage Range VFB
Voltage
VFB Voltage
Accuracy
Switching
Frequency
Lx Current
Limit*1
 OVP Voltage
(Typ.)
Other Features? Package Data Sheet
(PDF)
Design
Guide
(PDF)
Internal R1200x 001x PWM 2.3V to 5.5V Up to 20V,
Ext.Adjustable
1.0V ±15mV 1.2MHz 700mA 17.0V UVLO
Soft-Start
Shutdown
Discharge : xx1A
DFN1616-6
DFN(PLP)
1820-6

SOT-23-6
Download Download
002x 19.0V
003x 21.0V
R1202x 3xxA/B PWM 2.3V to 5.5V Up to 22.2V,
Ext.Adjustable
1.0V ±15mV 1.2MHz 350mA
700mA
14.0V UVLO
Soft-Start
Thermal
Shutdown
Discharge : xx1A
DFN1616-6B
TSOT-23-6
Download
1.08MB
Download
4xxA/B 17.0V
5xxA/B 19.0V
6xxA/B 21.0V
7xxA/B 23.0V
R1205L 8x1A PWM 2.3V to 5.5V Up to 24.2V,
Ext.Adjustable
1.0V ±15mV 1.2MHz 350mA
700mA
25.0V UVLO
Soft-Start
Thermal
DFN1616-6B Download Download
R1205N
R1207N
8x3A PWM 2.3V to 5.5V Up to 24.2V,
Ext.Adjustable
1.0V ±15mV 1.2MHz 350mA
700mA
25.0V UVLO
Soft-Start
Thermal
TSOT-23-6*2 Download Download
R1207N 8x3A PWM 2.3V to 5.5V Up to 24.2V,
Ext.Adjustable
1.0V ±15mV 1.2MHz 350mA
700mA
25.0V UVLO
Soft-Start
Thermal
TSOT-23-6*2 Download Download
External R1204x 11xB/C/E/F PWM: xxxB/E
PWM,
PWM/VFM
Auto Switching:
xxxC/F
2.3V to 5.5V Up to 40.2V,
Ext.Adjustable
1.0V ±15mV 1MHz:
xxxB/C
750kHz:
xxxE/F
900mA 23.0V UVLO
Soft-Start
Thermal
DFN(PLP)
1820-6

TSOT-23-6
Download Download
21xB/C/E/F 33.0V
31xB/C/E/F 42.0V
  • *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.

*

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Distributors

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Technical Info.

  • Application Note

    Technical Information on Ricoh Power Management ICs.

Product Catalog

  • Product Catalog

    Selection guide is available for download in PDF format.

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