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DCDC Converters (Switching Regulators)

High Voltage Step-down DCDC 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   -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   -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 DCDC 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   -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 DCDC 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 DCDC 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 -

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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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