AP3064EV1 评估板利用 AP3064 高效升压
控制器和 4 串电流源来驱动 WLED 背光。 AP3064 可在 4.5V 至 33V 的宽输入电压范围内工作。 4 个串的电流可通过外部电阻简单地编程为 20mA 至 220mA。当前每个字符串之间的匹配率为1.5%(类型)。其工作频率可在 0.1MHz 至 1MHz 范围内调节,从而可以在外部组件尺寸和系统效率之间进行权衡。 AP3064 支持外部
脉宽调制 (PWM) 调光控制,调光频率范围为 100Hz 至 20kHz
说明
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AP3064EV1, Evaluation Board utilizes the AP3064 high efficiency boost controller with 4-string current sources for driving WLED backlight. The AP3064 operates over a wide input voltage range from 4.5V to 33V. The current of 4 strings are simply programmed from 20mA to 220mA with an external resistor. The current matching between each string is 1.5% (Type). Its operating frequency can be adjusted from 0.1MHz to 1MHz, which allows trade-offs between external component size and system efficiency. The AP3064 supports external Pulse Width Modulation (PWM) Dimming Control with a wide dimming frequency range from 100Hz to 20kHz