General Description

The RT9273 is a high efficiency step-up DC-DC converter specifically designed for dual panel mobile phone applications.

According to SP status, RT9273 can either regulates output current flowing through series-connected LEDs or regulate output voltage applying to OLED with a common output LC filter. This along with compact VDFN-10L 3x3 package and high switching frequency allows less part count and smaller external components for space and cost saving.

Features

• Lion-Battery operating Range : 2.7V to 4.5V

• Maximum Output Voltage Up to 16V

• Share One Set of Inductor and Schottky Diode for 2 Channels

• Programmable Dimming Function by EN pin with 200Hz to 1kHz

• Internal Soft-Start Function to Avoid PWM Dimming Noise.

• Zero Shut Down Supply Current

• Complete Protection : OVP, OCP, OTP and SS

• RoHS Compliant and 100 Lead (Pb)-Free

Applications

• Dual panel mobile phone, with LED backlight