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Step-down DC/DC Converter with VD/VR Lineup



Step-down with VD/VR Step-up/Inverting (Dual/Tripple) Step-up/Step-down (Dual) Step-up&Down
Part Number Type Control Operating Voltage Output Voltage Accuracy Frequency Output Tr. IOUT *1 Features Packages
[PDF]
Data
Sheet
[PDF]
R5210x Step-down PWM 2.7V to 5.5V 1.5V to 3.3V (DC/DC) ±2% 800kHz Int. 500mA Built-in VD, VR *SOT-23- 6W
PDF
(185KB)
VR 2.5V to 3.6V (VR) ±2% 200mA
VD 3.0V to 4.5V (VD) ±2.5% - *HSON-6
R5212D Step-down PWM 3.0V to 5.5V 1.2V to 3.6V (DC/DC) ±2% 1.2MHz Int. 500mA Built-in VD, VR
Version with input power supplied to VR from DC/DC output is also available.
*HSON-6 PDF
(1.02MB)
VR 2.0V to 3.6V (VR) ±2% 200mA
VD 3.0V to 4.5V (VD) ±2.5% -
R5220x PWM   2.8V to 5.5V 1.0V to 3.3V ±2% 1.2MHz Int. 400mA
(at DC/DC)
Built-in DC/DC and VR alternative circuit *SON-6
*DFN(PLP) 2514-6
PDF
(593KB)
50mA
(at VR)
new
RP901x
Step-down PWM/VFM
Auto change
4.5V to 5.5V 1.2V to 1.8V (DC/DC) ±2% 1.2MHz Int. 800mA Built-in VD, VR
For DVD drive,
Reset type protection circuit
*DFN(PLP) 2527-10 PDF
(995KB)
VR 2.5V to 3.3V (VR) ±1% 600mA
VD 3.0V to 5.0V (VD) ±2% -
new
RP902x
Step-down PWM/VFM
Auto change
4.5V to 5.5V 1.2V to 2.5V (DC/DC1) ±2% 1.35MHz Int. 800mA Built-in VD
Sequentially controllable, finely controlling the DC/DC3 voltage for laser diode.
For BD drive,
Reset type protection circuit
QFN0404-20 PDF
(350KB)
Step-down PWM 1.2V to 3.3V (DC/DC2) 500mA
Step-up PWM Ext. adjustable between 5.0V to 11.0V (DC/DC3) 300mA
VD 3.0V to 5.0V (VD) -
Part Number Type Control Operating Voltage Output Voltage Accuracy Frequency Output Tr. IOUT *1 Features Packages
[PDF]
Data
Sheet
[PDF]

*1  For internal output transistor: This is an approximate value, because output current depends on conditions and external parts.

* For technical terms on the list, please refer to " Application Note ".


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