Datasheet4U Logo Datasheet4U.com

RT9271 - White LED Step-Up Converter

General Description

The RT9271 is a step-up DC/DC converter specifically designed to drive white LEDs with a constant current.

The device can drive one to three LEDs in series from a Li-Ion cell.

Key Features

  • Inherently Matched LED Current High Efficiency: 85% Typical Drives Up to Three LEDs from 2.8V Supply 20V Internal Switch Fast 1.1 MHz Switching Frequency Uses Tiny 1 mm Height Inductors Requires Only 1uF Output Capacitor Low Profile SOT-26 Package Optional 15V Over Voltage Protection.

📥 Download Datasheet

Datasheet Details

Part number RT9271
Manufacturer Richtek
File Size 503.73 KB
Description White LED Step-Up Converter
Datasheet download datasheet RT9271 Datasheet

Other Datasheets by Richtek

Part Number Description
RT9272 Constant Current LED Driver
RT9273 OLED + LED Driver
RT9275 Step-up DC/DC Converter
RT9276 Synchronous Boost Converter
RT9277A Low Noise Boost Converter
RT9277B Low Noise Boost Converter
RT9277C Low Noise Boost Converter
RT9277D Low Noise Boost Converter
RT9278 High Efficiency Boost LDO Converter & High Power White LED Driver
RT9202 Single Synchronous Buck PWM DC-DC Controller

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
RT9271 White LED Step-Up Converter in Tiny Package General Description The RT9271 is a step-up DC/DC converter specifically designed to drive white LEDs with a constant current. The device can drive one to three LEDs in series from a Li-Ion cell. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The RT9271 switches at 1.1 MHz, allowing the use of tiny external components. The input and output capacitor can be as small as 1uF, saving space and cost versus alternative solutions. A low 0.25V feedback voltage minimizes power loss in the current setting resistor for better efficiency. The RT9271 is available in low profile SOT-26 package.