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For Automotive Applications

DC/DC Converters (Switching Regulators)

DC/DC Converters (Switching Regulators) for Automotive Applications

Ricoh DC/DC converters (switching regulators) for automotive achieve low supply current, high efficiency and miniaturization by CMOS analog technology and by elaborate design skills. Our products can meet various needs of customers.

Most of the converters correspond to the operating temperature from -40°C to 125°C. Additionally, the following protections are included: three types of overcurrent protection (foldback, latch, or reset), overvoltage protection (OVP), undervoltage lockout (UVLO), and thermal shutdown (TSD).

Most of our DC/DC converters for automotive have acquired the AEC-Q100 qualification. We have succeeded in providing highly reliable DC/DC converters by manufacturing them in our own factory and our cooperative factories that have passed our inspections for automotive.

Besides, in order to meet the quality requirements from customers, we offer two quality classes for automotive products: for general equipment such as body systems and for automotive accessories. We are also offering solutions for various problems peculiar to automotive fields with our Traceability System and Product Longevity Program (PLP).

High Voltage Step-down DC/DC Converters

Product Name Class AEC-Q100 Ta [°C] Control Input Voltage (Absolute Max.) [V] Output Voltage [V] Frequency [kHz] Output Current [A]*1 Protection Circuit Remarks Package Datasheet
R1245 J,A Compliant -40 to 105 PWM 4.5 to 30.0
(32.0)
Ext. adjustable:
0.8 to 27.3
330,
500,
1000,
2400
1.2 Latch type, Fold back type DiodeSoftUVLOThermal HSOP-8E Automotive
A DFN2020-8
R1270 K,A Compliant -40 to 125 PWM,
PWM/VFM Auto Switching
3.6 to 34.0
(36.0)
Ext. adjustable:
0.8 to 31.6
Ext. adjustable: 300 to 2400

synchronized externally by PLL
3 Fold back type
(With Latch type)
DiodeUVLOOVLOThermal
Soft: Ext. Adjustable
FLG Output
HSOP-18 Automotive
R1272 K,A Compliant -40 to 125 Forced PWM,
PWM/VFM Auto Switching
4.0 to 34.0
(36.0)
Ext. adjustable:
0.7 to 5.3
250 to 1000

synchronized externally by PLL
External Latch type
or
Hiccup type
(Reset type)
SynchroUVLOOVPThermalSSCGPG
Soft: Ext. Adjustable
HSOP-18 Automotive
R1273 A Compliant -40 to 125 Forced PWM,
PWM/VFM Auto Switching
4.0 to 34.0
(36.0)
Ext. adjustable:
0.7 to 5.3
250 to 1000

synchronized externally by PLL
14 Latch type
or
Hiccup type
(Reset type)
SynchroUVLOOVPThermalSSCGPG
Soft: Ext. Adjustable
QFN0505-32B Automotive
R1275 A Compliant -40 to 125 Forced PWM 3.6 to 30.0
(36.0)
Ext. adjustable:
3.3 to 5.0
2000
synchronized externally by PLL
(1800 to 2200)
2 Hiccup type
(Reset type)
SynchroUVLOOVLOThermalSSCGPG
Soft: Ext. Adjustable
HSOP-18 Automotive

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Low Voltage Step-down DC/DC Converters

Product Name Class AEC-Q100 Ta [°C] Control Input Voltage (Absolute Max.) [V] Output Voltage [V] Frequency [kHz] Output Current [A]*1 Protection Circuit Remarks Package Datasheet
RP506 K,A Compliant -40 to 105,
-40 to 125
Forced PWM,
PWM/VFM Auto Switching
2.5 to 5.5
(6.5)
0.8, 1.0, 1.1, 1.2, 1.3, 1.5, 1.8, 1.85, 3.0, 3.3 1200,
2300
2 Latch type SynchroUVLO ThermalPG
Soft: Ext. Adjustable
DFN3030-12 Automotive
Ext. adjustable: 0.6 to 4.0
RP510 A Compliant -40 to 105 Forced PWM 2.5 to 5.5
(6.5)
0.8, 1.0, 1.1, 1.2, 1.3, 1.5, 1.8, 3.0, 3.3 2300 4 Latch type, Fold back type SynchroUVLOThermalPG
Soft: Ext. Adjustable
DFN3030-12 Automotive
Ext. adjustable: 0.8 to 3.3
RP550
Dual
A Compliant -40 to 105 Forced PWM,
PWM/VFM Auto Switching
2.3 to 5.5
(6.5)
Ext. adjustable: 0.6 to 3.3 2300 1×2ch Latch type, Fold back type SynchroUVLOThermalSoft DFN3030-12 Automotive

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PWM Step-up DC/DC Converters Lineup For LCD/ OLED/ CCD

Product Name Class AEC-Q100 Ta [°C] Input Voltage
(Absolute Max.) [V]
Output Voltage Frequency [kHz] Output Tr. Protection Circuit Remarks Package Datasheet
R1211 A   -40 to 85 2.5 to 6.0
(6.5)
Ext. adjustable 700,
300
External Latch type Int. phase compensation.
With stand-by.
SoftUVLO
SOT-23-6W Automotive

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Step-up and Charge pump DC/DC Converters Lineup For LCD/ OLED/ CCD

Product Name Class AEC-Q100 Ta [°C] Input Voltage (Absolute Max.) [V] Frequency [kHz] Control Output Voltage [V] Lx Current Limit [A]*2 Remarks Package Datasheet
R1290 A   -40 to 105 2.0 to 5.5: 101A,
2.5 to 5.5: 102A,
3.3 to 5.5: 103A
(6.5)
Ext. adjustable:
180 to 1400
PWM
(Step-up)
Up to 20.0,
Ext. adjustable
2 The charge pump operates at 1/4th operating frequency.
Soft: Ext. Adjustable
Sequence UVLO
QFN0404-24 Automotive
Charge pump
(Positive)
Ext. adjustable -
Charge pump
(Negative)
Ext. adjustable -
R1294 A   -40 to 105 2.0 to 5.5: 101A,
2.5 to 5.5: 102A,
3.3 to 5.5: 103A
(6.5)
Ext. adjustable:
210 to 1400
(800 -10%/+14%)
PWM
(Step-up)
Up to 20.0,
Ext. adjustable
2 The charge pump operates at 1/4th operating frequency.
Soft: Ext. Adjustable
Sequence UVLO
QFN0404-24B Automotive
Charge pump
(Positive)
Ext. adjustable -
Charge pump
(Negative)
Ext. adjustable -

Tap to see the table

Soft : Soft Start circuit   Thermal : Thermal Shutdown circuit   Sequence : Start-up Sequencing Control   UVLO : Under Voltage Lockout circuit   OVLO : Over Voltage Lockout function   OVP : Overvoltage Protection circuit   PG : Power Good function   SSCG : Spectum Diffusion Type Osillator   Diode: Diode Rectifier   Synchro : Synchronous Rectifier

  • *1This is an approximate value, because output current depends on conditions and external parts.
  • *2Lx current limit is different from output current.

[ Automotive Class ]

Ricoh provides three classes of automotive products corresponding to required quality level.

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