DatasheetsPDF.com

R1211D101A

RICOH
Part Number R1211D101A
Manufacturer RICOH
Description STEP-UP DC/DC CONTROLLER
Published Jan 21, 2018
Detailed Description R1211x SERIES STEP-UP DC/DC CONTROLLER NO.EA-088-0604 OUTLINE The R1211x Series are CMOS-based PWM step-up DC/DC conv...
Datasheet PDF File R1211D101A PDF File

R1211D101A
R1211D101A

Overview
R1211x SERIES STEP-UP DC/DC CONTROLLER NO.
EA-088-0604 OUTLINE The R1211x Series are CMOS-based PWM step-up DC/DC converter controllers with low supply current.
Each of the R1211x Series consists of an oscillator, a PWM control circuit, a reference voltage unit, an error amplifier, a reference current unit, a protection circuit, and an under voltage lockout (UVLO) circuit.
A low ripple, high efficiency step-up DC/DC converter can be composed of this IC with some external components, or an inductor, a diode, a power MOSFET, divider resisters, and capacitors.
Phase compensation has been made internally in the R1211x002B/D Series, while phase compensation can be made externally as for R1211x002A/C Series.
B/D version has stand-by mode.
Max duty cycle is internally fixed typically at 90%.
Soft start function is built-in, and Soft-starting time is set typically at 9ms(A/B, 700kHz version) or 10.
5ms(C/D, 300kHz version).
As for the protection circuit, after the soft-starting time, if the m...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)