MAX8901BMaxim IntegratedHighest Efficiency Supply for 2 to 6 Series WLEDs in a 2mm x 2mm TDFN PackageDrive a String of 2 to 6 WLEDs for 1.5in to 4in LCD Backlighting Used in Battery Operated Devices
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MAX8901BMaxim Integrated
制造商:
Maxim Integrated
制造商型号#:
MAX8901B
百芯编号#:
CM1435736425
价格(CNY):
百芯库存:
245
个
库存地点:
可供应量:
143
个在库
此为供应商库存，需要与销售确认
产品描述:
Highest Efficiency Supply for 2 to 6 Series WLEDs in a 2mm x 2mm TDFN PackageDrive a String of 2 to 6 WLEDs for 1.5in to 4in LCD Backlighting Used in Battery Operated Devices
The MAX8901A/MAX8901B step-up converters 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_ operate 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.
These converters 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. The MAX8901B uses single-wire, serial-pulse dimming that reduces the WLED intensity in 32 linear steps. Full-scale WLED current for serial-pulse dimming is 24.75mA (MAX8901B, 0.75mA/step).
The MAX8901_ feature an internal soft-start to eliminate inrush currents during startup, input overvoltage protection, WLED overvoltage protection, and a shutdown mode with 0.01µA (typ) shutdown current. No WLED current is present in shutdown provided the WLED forward voltage is greater than the input supply voltage. Additional features include undervoltage lockout (UVLO) and thermal shutdown.
The MAX8901_ are available in tiny 8-pin, 2mm x 2mm TDFN-EP packages (0.8mm max height).
