A8481

• Two independently controlled channels for dual display
• Output voltage up to 23 V
• 2.7 to 9 V input
• Output disconnect allows less than 1 µA supply current during shutdown
• Single-pin dimming control for WLED
• 1.2 MHz switching frequency
• 1.5 A switch current limit
• OVP, Pulse-by-Pulse OCP, OTP, and Soft Start

Description

The A8481 is a step-up dc-to-dc converter in a thermally-enhanced MLP package. A constant 1.2 MHz switching frequency, with current-mode control scheme, provides stable low-noise operation at high load conditions.

The A8481 is a dual output OLED + WLED driver. This device is suitable for driving OLED bias supply as well as WLEDs for backlight. For OLED it is capable of delivering 80 mA at 18 V, and can drive five WLEDs at 20 mA.

Independent output control and output disconnect make this IC ideally suited for battery operated, dual display portable applications. The IC disconnects input from the output path during shutdown, allowing shutdown currents less than 1 µA.

The A8481 is available in a 10-pin 3 mm × 3 mm MLP package that has a nominal height of only 0.75 mm.