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Step-up DC/DC Converter

Lineup in order of Input Voltage and Function
Step-up
Step-down
Multi Power Supply
For LCD/OLED/CCD

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

These products are PWM step-up DC/DC converters, which are optimized to drive a white LEDs for background illumination or passive matrix OLED display with constant current. These products include an under-voltage lockout circuit (UVLO), and a soft-start circuit. These are also able to be used in a general step-up power supply.
The products highlighted in yellow rows are major products that are shown in the "DC/DC Converters Lineup in order of Input Voltage and Function".
Succeeding products are available for products highlighted in grey rows. We recommend the products shown in "Product Name".⇒Rxxxx
For technical terms on the list, please refer to "Application Note".

For White LED

Diode	Product Name	Version	Control	Input Voltage Range	Output Voltage Range	VFB Voltage	VFB Voltage Accuracy	Frequency	Lx Current Limit^*1	OVP Voltage (Typ.)	Ther- mal Shut- down	Shut- down	High- speed Dimming	Package	Data Sheet (PDF)	Design Guide (PDF)
Internal	R1201N	021/023	PWM	1.8V to 5.5V	Ext. adjustable (up to 20V)	0.2V	±10mV	1MHz (0x1/2) 1.2MHz (0x3/4)	700mA	9.5V	—	—		SOT-23-6
		031/033								14.0V
		041/043								18.5V
		051/053								20.6V
		052/054		1.8V to 4.5V	Ext. adjustable (up to 21V)					21.6V
	R1202x	3xxD	PWM	1.8V to 5.5V	Ext. adjustable (up to 22.2V)	0.2V	±10mV	1.2MHz	350mA 700mA	14.0V				DFN1616-6B TSOT-23-6
	R1202x	7xxD	PWM	1.8V to 5.5V	Ext. adjustable (up to 22.2V)	0.2V	±10mV	1.2MHz	350mA 700mA	23.0V				DFN1616-6B TSOT-23-6
	R1205L	8x1B	PWM	1.8V to 5.5V	Ext. adjustable (up to 24.2V)	0.2V	±10mV	1.2MHz	350mA 700mA	25.0V		—		DFN1616-6B
	R1205L	8x1C	PWM	1.8V to 5.5V	Ext. adjustable (up to 24.2V)	0.4V	±10mV	1.2MHz	350mA 700mA	25.0V		—		DFN1616-6B
	R1205N ⇒R1207N	8x3B	PWM	1.8V to 5.5V	Ext. adjustable (up to 24.2V)	0.2V	±10mV	1.2MHz	350mA 700mA	25.0V		—		TSOT-23-6^*2
	R1207N	8x3B	PWM	1.8V to 5.5V	Ext. adjustable (up to 24.2V)	0.2V	±10mV	1.2MHz	350mA 700mA	25.0V		—		TSOT-23-6^*2	-	-
	R1218x	021A	PWM	1.8V to 5.5V	Ext. adjustable (up to 17V)	0.2V	±10mV	1.2MHz	700mA	9.5V	—	—	—	DFN(PLP)1820-6 SOT-23-6
		031A								14.0V
		041A								18.5V
External	R1203L	071B	PWM	1.8V to 5.5V	Ext. adjustable (up to 28.7V)	0.2V	±10mV	1.2MHz	700ｍA	29.5V	—	—		DFN1616-6B
	R1203N ⇒R1206N	071B	PWM	1.8V to 5.5V	Ext. adjustable (up to 28.7V)	0.2V	±10mV	1.2MHz	700ｍA	29.5V	—	—		SOT-23-6^*2
	R1206N	071B	PWM	1.8V to 5.5V	Ext. adjustable (up to 28.7V)	0.2V	±10mV	1.2MHz	700mA	29.5V	—	—		SOT-23-6^*2	-	-
	R1204x	11xA/D	PWM	2.3V to 5.5V	Ext. adjustable (up to 40.2V)	0.2V	±10mV	1MHz (A) 750kHz (D)	900ｍA	23.0V		—		DFN(PLP)1820-6 TSOT-23-6
		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
	R1218x	052A	PWM	1.8V to 5.5V	Ext. adjustable (up to 30V)	0.2V	±10mV	1.2MHz	700mA	23.0V	—	—	—	DFN(PLP)1820-6 SOT-23-6
		062A								27.5V
		072A								31.5V
Diode	Product Name	Version	Control	Input Voltage Range	Output Voltage Range	VFB Voltage	VFB Voltage Accuracy	Frequency	Lx Current Limit^*1	OVP Voltage (Typ.)	Ther- mal Shut- down	Shut- down	High- speed Dimming	Package	Data Sheet (PDF)	Design Guide (PDF)

*1Lx current limit is different from output current.
*2The pin-layout of R1205N and that of R1207N is upside down. The pin-layout of R1203N and that of R1206N is upside down.

For PMOLED and General Use

Diode	Product Name	Version	Control	Input Voltage Range	Output Voltage Range	VFB Voltage	VFB Voltage Accuracy	Frequency	Lx Current Limit^*1	OVP Voltage (Typ.)	Ther- mal Shut- down	Shut- down	Auto- Dis- charge	Package	Data Sheet (PDF)	Design Guide (PDF)
Internal	R1200x	001x	PWM	2.3V to 5.5V	Ext. adjustable (up to 20V)	1.0V	±15mV	1.2MHz	700mA	17.0V	—		(A) (B)—	DFN1616-6 DFN(PLP)1820-6 SOT-23-6
		002x								19.0V
		003x								21.0V
	R1202x	3xxA/B	PWM	2.3V to 5.5V	Ext. adjustable (up to 22.2V)	1.0V	±15mV	1.2MHz	350mA 700mA	14.0V			(A) (B)—	DFN1616-6B TSOT-23-6
		4xxA/B								17.0V
		5xxA/B								19.0V
		6xxA/B								21.0V
		7xxA/B								23.0V
	R1205x	8xxA	PWM	2.3V to 5.5V	Ext. adjustable (up to 24.2V)	1.0V	±15mV	1.2MHz	350mA 700mA	25.0V		—	—	DFN1616-6B
	R1205N ⇒R1207N	8xxA	PWM	2.3V to 5.5V	Ext. adjustable (up to 24.2V)	1.0V	±15mV	1.2MHz	350mA 700mA	25.0V		—	—	TSOT-23-6^*2
	R1207N	8x3A	PWM	2.3V to 5.5V	Ext. adjustable (up to 24.2V)	1.0V	±15mV	1.2MHz	350mA 700mA	25.0V		—	—	TSOT-23-6^*2	-	-
External	R1204x	11xB/C/E/F	PWM(B/E) PWM, PWM/VFM Auto Switching (C/F)	2.3V to 5.5V	Ext. adjustable (up to 40.2V)	1.0V	±15mV	1MHz (B/C) 750kHz (E/F)	900ｍA	23.0V		—	—	DFN(PLP)1820-6 TSOT-23-6
		21xB/C/E/F								33.0V
		31xB/C/E/F								42.0V