DC/DC Converters for LCD/OLED/CCD

Step-up

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.
For technical terms on the list, please refer to "Application Note".
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)
R1211x PWM 2.5V to 6.0V Ext. adjustable ±15mV 300kHz  External * (A/C) Ext. phase compensation.
(B/D) Int. phase compensation. With stand-by.
SON-6
SOT-23-6W
Download
700kHz
R1212D PWM 2.2V to 5.5V Ext. adjustable ±15mV 300kHz External *
(Ext. adjustable)
Ext. phase compensation.
Maxduty Ext. adjustable.
SON-8 Download
700kHz
1.4MHz 
R1215D PWM 1.8V to 5.5V Ext. adjustable ±15mV 700kHz External *
(Ext. adjustable)
Ext. phase compensation.
Maxduty Ext. adjustable.
SON-8 Download
1.4MHz
  • *1When the output voltage is adjusted by external resistors, the value means the feedback voltage accuracy.
  • *2Lx current limit is different from output current.

*

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Distributors

Ricoh semiconductor products are available at those dealers.

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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