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

Multi Power Supply DC/DC Converter

Step-up and Inverting 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
(kHz)
Output
Tr.
Lx Current Limit*2 Timer Latch Delay Time Other Features Package Data Sheet
(PDF)
Design
Guide
(PDF)
R1280D CH1: PWM, Step-up 2.5V to 5.5V Ext. Adjustable ±1.5% 200kHz: xxxC,
700kHz: xxxA/B
External - 100ms Soft-Start: Ext. Adjustable
UVLO
Phase: Ext., xxxA/C
Phase: Int., xxxB, With stand-by.
SON-10 DL -
CH2: PWM, Inverting
R1283K CH1: PWM, Step-up 2.5V to 5.5V Up to 20.0V,
Ext. Adjustable
±1.5% 300kHz: xxxA,
700kHz: xxxB,
1.4MHz: xxxC
Internal 1.5A 50ms Soft-Start UVLO
Discharge: Inverting output only
Sequencing
DFN(PLP)2730-12 DL DL
CH2: PWM, Inverting Up to VDD-20.0V,
Ext. Adjustable
±25mV 1.5A
R1286K CH1: PWM, Step-up 2.5V to 5.5V 4.5V to 5.8V: xxxA/C to G ±0.9% 1.75MHz Internal 1.0A: 0xxx,
1.1A: 1xxx
16ms: 0xxx/001B,
40ms: 1xxx
Synchro
Soft-Start UVLO
Sequencing Thermal
Discharge
S-Wire: xxxA/C to G, Inverting output can be dynamically changed by S-wire control.
DFN(PLP)2730-12 DL DL
4.5V to 5.8V,
Ext. Adjustable: 001B
±15mV
CH2: PWM, Inverting -2.0V to -6.0V: xxxA/C to G ±70mV 1.5A: 0xxx,
1.8A: 1xxx
-2.0V to -6.0V,
Ext. Adjustable: 001B
±25mV
R1287x CH1: Step-up PWM/VFM Auto Switching: xxxB/F,
PWM: xxxC/D/G/H
2.5V to 5.5V 4.5V to 5.8V: xxx ±0.9% 900kHz: xxxB/F,
300kHz: xxxC/G,
1MHz: xxxD/H
Internal 1.1A 30ms Synchro
Soft-Start UVLO
Sequencing Thermal
Discharge

Only WLCSP-12-P1: xxxF/G/H
WLCSP-12-P1
DFN3030-12
DL DL
4.5V to 5.8V, Ext. Adjustable: 001 ±15mV
CH2: Inverting -4.5V to -5.8V: xxx ±1.0% 1.1MHz: xxxB/H,
300kHz: xxxC/G,
1MHz: xxxD/H
1.5A
-4.5V to -6.0V, Ext. Adjustable: 001 ±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