PRELIMINARY CM9156A Charge Pump White LED Driver
Features
• • • • • • • • • • • • • • • 3.0V to 6.5V input voltage range Dual mode operation: 1x and 1.5x Fixed 4.5V output with initial accuracy of ± 2% Supports up to 180mA (@4V) output High efficiency at both high and low input voltages Low external parts count, requires no inductor PWM brightness control via the ENA pin Selectable 8kHz, 32kHz, 262kHz, and 650kHz switching frequency Low shutdown current of
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