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The RT9387A is a high current charge pump designed specifically for use with white LEDs in camera flash applications. The charge pump can support one flash LED with up to 700mA of regulated constant current for uniform intensity. Highest efficiency is maintained by utilizing a x1/x1.5/x2 fractional charge pump and low dropout current regulators. The RT9387A also offers a built-in flash timeout function as a safety feature associated with the high power flash driver. The safety timer is adjustable via an external capacitor. The RT9387A provides protection features such as Over-Temperature Protection (OTP) and Over-Voltage Protection (OVP). A soft-start circuitry is also included to prevent excessive inrush current at start-up and mode transitions. The RT9387A is available in the WQFN -16L 2x3 package.
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