Skip to main content Skip to first level navigation

RICOH imagine. change.

RICOH ELECTRONIC DEVICES CO., LTD.

Skip to main content First level navigation Menu
Breadcrumbs
Main content

DC/DC Converters for LCD/OLED/CCD

Step-up and Charge Pump Type DC/DC Converters

These products are suitable for the power management of LCDs, OLEDs and CCDs. 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.

Product
Name
Control Input Voltage Range Output
Voltage
Range
Voltage
Accuracy *1
Switching
Frequency
Output
Tr.
Lx
Current
Limit*2
Other Features Package Data
Sheet
(PDF)
R1293K PWM, Step-up 2.2V to 5.5V Up to 16.0V,
Ext. Adjustable
±15mV 300kHz to 1MHz,
Ext. Adjustable
Internal 2A DC/DC output with noise reduction function.
VCOM amplifier 1 channel,
GAMMA amplifier 6 channel.
Thermal
Soft-Start : Ext. Adjustable
Phase : Ext.
Maxduty : Ext. Adjustable
QFN(PLP)
0404-32
DL
LDO 1.8V to 2.5V ±1% Internal IOUT=
350mA
Amplifier 5.0V to 16.0V - - - -
R1290K CH1: PWM, Step-up 2.0V to 5.5V
: 101A
2.5V to 5.5V
: 102A
3.3V to 5.5V
: 103A
CH1: Up to 20.0V,
Ext. Adjustable
±15mV 180kHz to 1.4MHz,
Ext. Adjustable
Internal CH1: 2A The charge pump operates at
1/4th operating frequency.
Soft-Start : Ext. Adjustable
Sequencing UVLO
Phase : Ext.
Maxduty : Ext. Adjustable
QFN0404-24 DL
CH2: Charge pump,
Positive
CH2/3: Ext. Adjustable ±25mV -
CH3: Charge pump,
Negative
±30mV -
  • *1For the externally adjustable output voltage type, this is a feedback voltage accuracy.
  • *2Lx current limit is different from output current.

Tap to see the table

Inquiry about products

Technical Support

Inquiries (SSL Form)

Inquiry about business

Purchase, Request for Samples and Documents

Ricoh provide device products for corporate/ Industries through our distributors. Please contact a local distributor in your region for any sales-related inquiries such as price, stock, and delivery date, etc.

Distributors

Sample Online

Ricoh open "Ricoh Web Sample Shop" in Chip One Stop. Buy samples of Power Management ICs and Real Time Clock ICs online.

chip1stop
RICOH Web Sample Shop