AL3065 (Obsolete)

Description

The AL3065 is a high efficiency 4-channel boost controller for WLED backlight applications. It operates over a wide input voltage ranged from 4.5V to 33V.

The current of the 4 channels is simply programmed from 20mA to 400mA with an external resistor. The current match between any channel is ±1.5% (typical). Its operating frequency can be adjusted from 0.1MHz to 1MHz. The AL3065 can support three dimming modes: direct PWM dimming, PWM to analog dimming and DC to analog dimming.

Robust protection features include cycle by cycle current limit, softstart, UVLO, programmable OVP, OTP, open/short LED protection, Schottky Diode Short and Open Protection, Inductor Short-Circuit Protection and VOUT Short protection.

The IC is available in SO-16 package.

Feature(s)

• Input Voltage Range: 4.5V to 33V
• Drivers up to 4 Strings in Parallel, 250mA per String, 400mA Pulse Current
• ±3% Current Precision
• Low Ripple for Low BOM Cost
• 4KV HBM ESD Class
• High Voltage Pins CS and OVP for Safety Test
• Supports Direct PWM Dimming, PWM to Analog Dimming and DC to Analog Dimming Control
• Minimum PWM Dimming Duty Cycle can be 1/10,000 at 100Hz Dimming Frequency
• LED Open/Short Protection
• Schottky Diode/Inductor Short-Circuit Protection
• Built-in OCP, OVP, OTP, UVLO, VOUT Short/Schottky Diode Open Protection
• Totally Lead-Free & Fully RoHS Compliant
• Halogen and Antimony Free. “Green” Device

Application(s)

• LCD Monitor
• LCD Display Module
• LCD TV