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AS1390B LED Power Converter

High Power Boost Controller and Buck Converter for LED Backlight

The AS1390B is a high-power, constant-frequency boost controller with an integrated buck converter. It is designed for single mode operation. The continuous conduction mode of the AS1390B provides superior bandwith and transient response. The two output voltages for the boost controller (2D and 3D mode) can be programmed with an external resistor divider. The buck converter is optimized for suppling a /P with 5V. AS1390B is available in a 16-pin SOIC package.

block diagram of the AS1390B LED Power Converter

Key Features

  • High Efficiency: Up to 95%
  • Supply Voltage Range: 10V to 30V
  • Boost Output Current: up to 3A
  • Continuous Conduction Mode
  • Undervoltage Lockout with hysteresis

AS1390A Applications

LED Backlighting for LCD TV Sets and Monitors

AS1390B Product Facts

Input voltage [V] 10-30
Output voltage boost controller [V] 100
Output current boost 3A
Output buck converter 5V/100mA
Overvoltage protection
Overcurrent protection
Overtemperature protection [ ]
3D features
Package SOIC-16