AS1390A

Technical coantmesntAsGtill valid Datasheet AS1390A, AS1390B High Power Boost Controller and Buck Converter for LED Backlight 1 General Description The AS1390A, AS1390B is a high-power, constant-frequency boost controller with an integrated buck converter. The AS1390A can be used for the boost converter in TV sets which are optimized for 2D and 3D mode. AS1390B is designed for single mode operation. The continuous conduction mode of the AS1390 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 µP with 5V. The AS1390A is available in a 20-Pin QFN (4x4mm) package, the AS1390B comes in a 16-pin SOIC package. 2 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 Overvoltage, Overcurrent and Overtemperature Protection Low Dropout Operation: 90% Duty Cycle Buck always ON, Boost with enable PIN Packages: - 20-Pin QFN (4x4mm) - 16-pin SOIC Figure 1. AS1390A - Typical Application 3 Applications The device is ideal for LED backlighting for LCD - TV sets and monitors. www.austriamicrosystems.com/Power-Management/AS1390 Revision 1.04 1 - 20 AS1390A, AS1390B Datasheet - Applications Figure 2. AS1390B - Typical Application Technical coantmesntAsGtill valid www.austriamicrosystems.com/Power-Management/A...