描述 Description

The ET9383Y 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. The Flash mode and Movie/Torch mode LED current is programmed by external resistors respectively, making the flash LED solution simple to control. The ET9383Y includes flash timeout, overvoltage, over-temperature, under-voltage and LED short and open circuit protection functions. The 2MHz switching frequency allow for the use of tiny, low profile (1uH or 2.2uH) inductors and 10uF ceramic capacitors.
?The real LED current at Flash mode and Movie/Torch mode can be programmed by external PWM signal at ENM pin.

特性 Features

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

● Input Voltage Range: 3V to 4.8V

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

● High Efficiency LED Driver (Up to 97%)

● Independent Flash Mode Enable and Movie/Torch

● Flash Mode and 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)

● Over-voltage and under-voltage Protection

● Over-temperature Protection

● LED short/open circuit protection

● Less than 1μA Shutdown Current

● Available in Green TDFN-3×2-14L Package