Global

DC/DC Converters for LCD/OLED/CCD

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

Step-up and Charge pump/ Amplifier

These products are suitable for the power management of LCD, OLED and CCD. Many variations are available such as step-up DC/DC controller, step-up and step-down dual output converter and step-up and positive / negative charge pump triple output converter.
These products include an under-voltage lockout circuit (UVLO), and a latch type protection circuit. The products with a built-in the sequence control circuit option are able to control a start-up sequence and a shutdown sequence.
The products highlighted in blue rows are major products that are shown in the "DC/DC Converters Lineup in order of Input Voltage and Function".
For technical terms on the list, please refer to "Application Note".

Thermal : Thermal shutdown circuit　Sequence : Power on sequence controllable

Product Name	Control	Input Voltage Range	Output Voltage Range	Voltage Accuracy^*1	Frequency	Output Tr.	Lx Current Limit^*2	Soft Start	Features, Remarks	Package	Data Sheet (PDF)
R1290K	PWM (Step-up)	2.0V to 5.5V	Ext. adjustable	±1.5%	Ext. adjustable between 180kHz to 1.4MHz	Internal	2A	(Ext. adjustable)	The charge pump operates at 1/4th operating frequency. Sequence	QFN0404-24
	Charge pump (Positive)			±25mV			—
	Charge pump (Negative)			±30mV			—
R1293K	PWM (Step-up)	2.2V to 5.5V	Ext. adjustable up to 16.0V	±1.5mV	Ext. adjustable between 300kHz to 1MHz	Internal	2A	(Ext. adjustable)	DC/DC output with noise reduction function. VCOM amplifier 1 channel, GAMMA amplifier 6 channel. Thermal	QFN(PLP)0404-32	-
	LDO	2.2V to 5.5V	1.8V to 2.5V	±1%		Internal	Iout= 350mA
	Amplifier	5.0V to 16.0V	-	-		-	-

*1When the output voltage is adjusted by external resistors, the value means the feedback voltage accuracy.
*2Lx current limit is different from output current.