MAX8901AETA+T

MAX8901AETA+T is a step-up converter drive from two to six series-connected white LEDs (WLEDs) with constant current to provide uniform WLED intensity for LCD backlighting in cell phones, PDAs, and other handheld devices. The MAX8901 operates at a fixed 750kHz (typ) switching frequency, allowing for tiny external components, and are optimized for the highest possible efficiency over the full 1-cell Li+/Li-Poly battery range. This converter use a single input (ON) to enable the IC and to control WLED intensity. The MAX8901A requires a direct PWM input to regulate WLED intensity with the WLED current proportional to the PWM duty cycle. Typical applications include display backlight (from 2 to 6 WLEDs), cellular phones, PDAs and smartphones, MP3 and portable media players, portable navigation devices, digital cameras.

• Cost-effective and flexible solution for wide range of backlighting applications
• 2.6V to 5.5V input voltage range, fixed-frequency operation
• Direct PWM dimming, flexible dimming control
• Protection features improve system reliability: WLED overvoltage protection (25V typ)
• Internal soft-start and thermal shutdown, input undervoltage lockout, input overvoltage lockout
• High efficiency extends battery life: up to 91% efficiency
• 0.01µA (typ) shutdown current
• No WLED current in shutdown
• 8 pin 2mm x 2mm TDFN package
• Operating temperature range from -40°C to +85°C

Warnings

Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party