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LM3519,pdf datasheet (High Fre
消耗积分:3 |
格式:rar |
大小:556 |
2009-09-30
吴湛
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The LM3519 drives up to 4 white LEDs with constant current
to provide LCD backlighting in handheld devices. The LED
current is internally set to 20mA. The series connection
allows the LED current to be identical for uniform brightness
and minimizes the number of traces to the LEDs. Brightness
control is achieved by applying a PWM signal on enable with
frequencies up to 30kHz.
to provide LCD backlighting in handheld devices. The LED
current is internally set to 20mA. The series connection
allows the LED current to be identical for uniform brightness
and minimizes the number of traces to the LEDs. Brightness
control is achieved by applying a PWM signal on enable with
frequencies up to 30kHz.
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