The RT8463 is a current mode PWM regulator for LED driving applications. With a 2A power switch, wide input voltage (4.5V to 50V) and output voltage (up to 50V) ranges, the RT8463 can operate in any of the three common topologies : Buck, Boost or Buck-Boost.

With 470kHz operating frequency, the size of the external PWM inductor and input/output capacitors can be minimized. High efficiency is achieved by a 100mV current sensing control.

Brightness dimming can be controlled from either analog or PWM signal. A unique built-in clamping comparator and filtering resistor allow easy low noise analog dimming conversion from PWM signal with only one external capacitor.

The RT8463 is available in the TSSOP-14 (Exposed pad) and WDFN-12L 3x3 packages.

应用

GPS, Portable DVD Backlight

Desk Lights and Room Lighting

Industrial Display Backlight

关键参数

文件

订购

关键特性

High Voltage : VIN Up to 50V, VOUT Up to 50V

Buck, Boost or Buck-Boost Operation

Built-In 2A Power Switch

Current Mode PWM Control

470kHz Fixed Switching Frequency

Easy Dimming : Analog, PWM Digital or PWM Converting to Analog with One External Capacitor

Adjustable Soft-Start to Avoid Inrush Current

Adjustable Over Voltage Protection to Limit Output Voltage

Thermal Shutdown

Under Voltage Lockout

RoHS Compliant and Halogen Free