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R5220x - PWM Step-down DC/DC Converter

General Description

Pin No 1 2 3 4 5 6 Symbol Lx GND MODE CE VOUT VIN Description LX Pin Voltage Supply Pin Ground Pin Mode changer Pin (Refer to the selection guide above.) Chip Enable Pin (active with "H") Output Pin Voltage Supply Pin

Tab in the parts have GND level.

Key Features

  • Supply Current Typ. 350µA (DC/DC), Typ. 5µA (VR) Standby Current Typ. 0.1µA Built-in Driver ON Resistance P-channel 0.5Ω, N-channel 0.5Ω (at VIN=3.6V) Output Current Min. 400mA (DC/DC), Min. 50mA (VR) Input Voltage 2.8V to 5.5V (Absolute Input Maximum: 6.5V) Output Voltage 1.0V to 3.3V Output Voltage Accuracy ±2.0% (VOUT > = 1.5), ±30mV (VOUT.

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Datasheet Details

Part number R5220x
Manufacturer RICOH
File Size 540.36 KB
Description PWM Step-down DC/DC Converter
Datasheet download datasheet R5220x Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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www.DataSheet4U.com R5220x SERIES PWM Step-down DC/DC Converter with switch function NO.EA-121-070824 OUTLINE The R5220x Series are CMOS-based PWM step-down DC/DC Converters with synchronous rectifier, low supply current and LDO mode. DC/DC converter of the R5220x consists of an oscillator, a PWM control circuit, a reference voltage unit, an error amplifier, a soft-start circuit, protection circuits, a protection against miss operation under low voltage (UVLO), PWM-DC to DC converter / LDO alternative circuit, a chip enable circuit, and a driver transistor. A high efficiency step-down DC/DC converter can be easily composed of this IC with only a few kinds of external components, or an inductor and capacitors.