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RT6203B - Synchronous Step-Down Converter

Description

The RT6203B is an adaptive on-time mode synchronous Buck converter.

The main control loop of the RT6203B uses an adaptive on-time mode control which provides a very fast transient response with no external components.

The RT6203B operates from 4.5V to 18V VIN input.

Features

  • an adjustable soft-start time. Output voltage is adjustable by resistor divider through the FB pin between 0.8V to 8V. Pin Configuration (TOP VIEW) Features.
  • VID Control Range Via I2C Compatitable Interface : 0.72V to 1.48V in 10mV Steps.
  • Adjustable Current Limit.
  • Adjustable Thermal Shutdown.
  • Fast Transient Response.
  • Adjustable Output Voltage from 0.8V to 8V.
  • Steady 700kHz Switching Frequency.
  • Optimized for All Ceramic Capacitors.
  • Externally-Adjustable, P.

📥 Download Datasheet

Datasheet Details

Part number RT6203B
Manufacturer Richtek
File Size 421.59 KB
Description Synchronous Step-Down Converter
Datasheet download datasheet RT6203B 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.

View original datasheet text
® RT6203B 5A, 18V, 700kHz ACOTTM Synchronous Step-Down Converter with VID Control General Description The RT6203B is an adaptive on-time mode synchronous Buck converter. The main control loop of the RT6203B uses an adaptive on-time mode control which provides a very fast transient response with no external components. The RT6203B operates from 4.5V to 18V VIN input. After the initial power-up, the output voltage can be changed by codes sent into the IC via an I2C compatible VID control bus. There are special codes which can be used to program current limit level and thermal shutdown level. Shutdown and startup can be also programmed by special codes. The device also features an adjustable soft-start time. Output voltage is adjustable by resistor divider through the FB pin between 0.
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