ADP1653是一款专为手机优化的超小尺寸、高效率、大功率、闪光灯LED驱动器。该器件的高效率与动态LED电流控制可以在微暗的环境下提高闪光灯的亮度和图像质量。ADP1653的峰值效率为92%，在锂电供电情况时，性能要优于电荷泵解决方案

ADP1653具有双模式接口，可以配置为2 bit逻辑或I2C接口。利用外部电阻或通过I2C接口可以对指示与大功率LED电流进行编程。为了使整个闪光灯亮度最大，ADP1653提供输入可以在50 μs内降低闪光灯电流，即Tx mask。在RF传输过程中，Tx masking可以通过降低LED电流来降低功耗。

ADP1653解决方案在I2C模式仅需要4个外部元件，占用空间为6.4 mm × 7.2 mm。该器件具有多个安全特性，如软启动、闪光灯超时、输出电流限制、热保护以及过压保护等。

ADP1653工作温度（结温）范围：?40°C ～ +125°C

应用

Data Sheet, Rev. B, 9/07

The evaluation system is composed of a motherboard and a daughterboard. The motherboard provides the I2C signals from the computer USB port and generates the I/O voltages and digital high and low signals for the daughterboard. For temperature measurement, the daughterboard can be either plugged directly into the motherboard or connected to the motherboard via the ribbon cable provided with the evaluation kit.

The motherboard features a 3.3 V regulator and a 1.8 V regulator. The jumpers on the bottom left of the motherboard set the VIC voltage, which is the I2C voltage for the control pins. Users can choose among the 1.8 V, 3.3 V, or 5 V USB or the external VBAT as the supply voltage for the daughterboard.

The daughterboard contains numerous jumpers and test points for easy evaluation of the board. Also included with the kit are two current probes that can be plugged directly into jumper heads to measure currents with current probes.

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