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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.

Applications

  • GPS, Portable DVD Backlight
  • Desk Lights and Room Lighting
  • Industrial Display Backlight
Key Spec.
RT8463
Status Active
Vin (min) (V) 4.5
Vin (max) (V) 50
Vout (max) (V) 50
LED Channels 1
Topology Boost;Buck
SW Freq (typ) (kHz) 470
Vcs (typ) (mV) 100
Dimming Control Analog;PWM;PWM-to-Analog
Features Adjustable Soft-Start;Current Mode Control;Enable Input;OCP;OVP
Package Type TSSOP-14(PP);WDFN3x3-12
Features
  • 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
Datasheet
TitleLast UpdateDownload
High Voltage Multi-Topology LED Driver2014/01/24
Please confirm with our distributor or sales representative for actual stock status.
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