描述 Description

The ET9382Y is an inductive high efficient DC-DC step up converter with two current sinks.
The two current sinks can operate in flash / Movie torch light modes. Flash mode is usually used with 660ms timer control to generate a high intensity flash. The Flash mode and Movie/Torch mode LED current is programmed by external resistors respectively, making the flash LED solution simple to control. If both enable pins are at logic high, the LED current will be programmed by the Movie/Torch mode setting resistor.
The ET9382Y includes flash timeout, overvoltage, over temperature, under voltage and LED short and open circuit protection functions. The leakage current in shutdown is less than 1μA.

特性 Features

● High efficiency 2MHz fixed frequency DC-DC Boost converter with soft start allows small coils

● Input Voltage Range: 3V to 5V

● Dual Flash LED Outputs

● Drive Up to Total 1.5A or 0.75A per Channel

● High Efficiency LED Driver (Up to 90%)

● Independent Flash Mode Enable and Movie/Torch

● Movie/Torch Mode Dimming via PWM Control

● One Resistor Sets Flash Mode LED Current

● One Resistor Sets Movie/Torch Mode LED Current

● Integrated Thermal Regulation Control

● Automatic Flash Timeout timer to protect the LED(s)

● Overvoltage and under voltage Protection

● Over temperature Protection

● LED short/open circuit protection

● Less than 1μA Shutdown Current

● TDFN-3×2-14L package